Summary of Unsafe Condition, Accident & Fire Reports
| Date Reported | Injuries | Fatalities | Description | Loss of Containment |
|---|---|---|---|---|
| 2023-11-21 | 0 | 0 | A coupling on a copper instrumentation line sheared off on startup resulting in a loss of containment. The owner believes the failure is a result of incorrect coupling material installed on a previous repair and a lack of piping supports. | Yes |
| 2023-11-20 | 0 | 0 | A pinhole leak from a water injection recycle line was reported. The owner identified corrosion from stagnant flow in the piping as the cause of the leak. | Yes |
| 2023-11-17 | 0 | 0 | An unsafe condition was reported when overpressure protection failed and over pressurized a header. The cause was found to be a seized safety valve. | No |
| 2023-11-16 | 0 | 0 | A strainer gasket failed on a high-pressure steam line resulting in a leak. Gasket blew out during normal operation and the failure is believed caused by deterioration from service. | Yes |
| 2023-11-14 | 0 | 0 | A section of an emulsion flow line developed a leak due to stress corrosion cracking near the pipe support. | Yes |
| 2023-11-14 | 0 | 0 | An unsafe condition was reported after a negative pressure (vacuum) event occurred in a economizer. The probable cause of the incident was the circulation of acid without venting. | No |
| 2023-11-10 | 0 | 0 | An unsafe condition was reported after a suspected leak was detected from a liquified argon piping system. Ice formation on the exterior of the piping created a false leak indication. | Yes |
| 2023-11-09 | 0 | 0 | A leak from a condensate line elbow was discovered. The owner determined the cause to be freeze damage from due to lack of heat tracing. | Yes |
| 2023-11-07 | 0 | 0 | A steam trap failed closed which caused the header off the main steam supply to freeze and split. The owner has determined the cause to be inadequate insulation and heat tracing. | Yes |
| 2023-11-03 | 0 | 0 | Piping on gas compression skid developed a crack near the relief valve inlet. Probable cause is vibration induced cracking. | Yes |
| 2023-11-02 | 0 | 0 | An economizer drain valve developed a pinhole leak due to internal corrosion. | Yes |
| 2023-10-31 | 0 | 0 | An ammonia alarm notified operations personnel of a potential leak in the machinery room for an ice arena. It was determined the ammonia leak was from a flange on one of the compressors. | Yes |
| 2023-10-29 | 0 | 0 | A hydrocarbon drain valve developed a leak in the valve body from flow impingement and internal corrosion. | Yes |
| 2023-10-27 | 0 | 0 | A piping header failed due to internal corrosion causing a leak of water and hydrogen sulfide (H2S) gas. | Yes |
| 2023-10-27 | 0 | 0 | A pinhole leak from a piping system was discovered. The cause was determined to be internal corrosion. | Yes |
| 2023-10-23 | 0 | 0 | A separator developed a pinhole leak on the drain piping due to internal corrosion. | Yes |
| 2023-10-20 | 0 | 0 | A loss of containment was reported from a flange weld on a stainless steel braided hose assembly. The owner believes the crack is from fabrication. | Yes |
| 2023-10-20 | 0 | 0 | A pinhole leak was discovered from a check valve. The owner has determined the probable cause to be internal corrosion. | Yes |
| 2023-10-20 | 0 | 0 | A 6 inch circumferential crack was identified on the piping upstream of the process gas feed valve. The owner has determined the probable cause to be inherent defects during fabrication of the flange. | Yes |
| 2023-10-19 | 0 | 0 | A leak was discovered on the bottom head at the outlet nozzle of a vertical test separator. The owner believes that the leak is caused by chloride stress corrosion cracking. | Yes |
| 2023-10-17 | 0 | 0 | A pressure relief valve in a compressor building developed a crack resulting in a leak on the inlet threads. The cause was due to vibrations from the associated compressor. | Yes |
| 2023-10-17 | 0 | 0 | A piping header developed a crack resulting in an emulsion leak. The cause is believed to be stress corrosion cracking. | Yes |
| 2023-10-17 | 0 | 0 | Threaded piping on a gas compressor sheared off due to fatigue cracking caused by vibration. | Yes |
| 2023-10-16 | 0 | 0 | Operations discovered a leak on the boiler feedwater piping at a Steam Assisted Gravity Drainage (SAGD) facility. The owner has determined the probable cause to be excessive pipe wall thinning due to corrosion/erosion. | Yes |
| 2023-10-13 | 0 | 0 | Fretting damage was discovered on the suction piping of a rental compressor. Following the owner’s investigation, it was discovered that a section of stainless-steel tubing was rubbing against the suction piping. | No |
| 2023-10-13 | 0 | 0 | An unsafe condition was reported because an engineering review of a plant, revealed that a flare knockout drum had exceeded its MDMT conditions. This was a result of not considering the flashing of ethylene liquid in the design. | No |
| 2023-10-12 | 0 | 0 | A heat recovery steam generator (HRSG) developed a tube leak. The owner has determined the cause to be thermal fatigue. | Yes |
| 2023-10-11 | 0 | 0 | A loss of containment was reported from a process piping system due to an isolation valve packing leak. | Yes |
| 2023-10-11 | 0 | 0 | A dead-leg in an oil/water piping system developed a pinhole due to internal corrosion. | Yes |
| 2023-10-11 | 0 | 0 | A leak was found in boiler blowdown piping. Probable cause is flow-accelerated corrosion. | Yes |
| 2023-10-11 | 0 | 0 | An unsafe condition was reported after an operator identified that the high-pressure shutdown set point of the compressor was set higher than the suction scrubber vessel MAWP. Subsequent investigation revealed that the tag was incorrectly marked. | No |
| 2023-10-06 | 0 | 0 | An oil treater firetube section deformed and cracked. The owner determined that overheating was the cause. | Yes |
| 2023-10-06 | 0 | 0 | The blowdown piping from a carbon compressor was found to have been over pressured during emergency shut down (ESD) testing. The owner determined that a constriction in the piping was blocking flow. | No |
| 2023-10-05 | 0 | 0 | During warm-up of reboilers, water hammer occurred in the condensate piping. The water hammer caused a failure/leak of a weld connection to the condensate header. | Yes |
| 2023-10-02 | 0 | 0 | A leak from steam piping developed due to freezing. The owner has determined that a lack of heat tracing is the cause. | Yes |
| 2023-09-28 | 0 | 0 | A piping elbow in a condensate line developed a leak due to internal corrosion. | Yes |
| 2023-09-27 | 0 | 0 | An owner reported that a rupture disk burst causing the associated safety valve to lift releasing ethylene which resulted in a fire. The fire damaged piping and instrumentation equipment. | Yes |
| 2023-09-27 | 0 | 0 | A cast iron sectional boiler overheated, resulting in a fire. It was found that the feedwater was inadequate resulting in a low water condition and the low water cutoff device failed to operate. | Yes |
| 2023-09-22 | 0 | 0 | An air preheater had frozen resulting in a split tube and loss of steam/steam condensate. The owner has determined the cause to be a passing isolation valve. | Yes |
| 2023-09-21 | 0 | 0 | Operations found the shell to channel joint gasket on a heat exchanger had failed resulting in a steam leak. The owner has determined the cause to be in-service deterioration of the gasket. | Yes |
| 2023-09-21 | 0 | 0 | A condensate piping line failed resulting in a loss of containment. The owner has determined the failure was a result of localized wall thinning due to preferential flow in the system. | Yes |
| 2023-09-20 | 0 | 0 | An elbow on blow down piping developed a leak due to corrosion/erosion from turbulent flow of steam and condensate. | Yes |
| 2023-09-19 | 0 | 0 | A tube pigtail on a hydrogen reformer developed a leak. The owner believes the cause to be high temperature creep. | Yes |
| 2023-09-18 | 0 | 0 | A leak from an acid pump line attributed to through wall thinning of line due to acid exposure. | Yes |
| 2023-09-18 | 0 | 0 | A suction bottle was found to be leaking from the repad “tell-tale” hole. The owner believes that the leak was caused by a cracked nozzle weld due to vibration from the compressor. | Yes |
| 2023-09-16 | 4 | 0 | During turnaround activities at a natural gas processing facility, a flash fire occurred, which resulted in one worker receiving minor burns. The owner believes gasoline fumes from equipment operated inside the building to be the cause. | Yes |
| 2023-09-15 | 0 | 0 | A process piping system was found to be operating above its design pressure. Probable cause is procedural errors and inadequate design. | No |
| 2023-09-11 | 0 | 0 | Cleaning water was left in a heat exchanger and resulted in failed tubes due to freezing. | Yes |
| 2023-09-11 | 0 | 0 | A plate heat exchanger in glycol service developed a small leak. The cause is believed to be gasket deterioration due to age and service. | Yes |
| 2023-09-06 | 0 | 0 | Following routine maintenance on a pump jack, a plywood base around the pump jack motor caught fire. The flames impinged on a propane tank causing the safety valve to discharge. The owner has determined the cause to be exhaust temperature. | No |
| 2023-08-31 | 0 | 0 | A leak in a water tube boiler developed at a support plate to tube fillet weld. The owner has determined the cause to be fatigue. | Yes |
| 2023-08-31 | 0 | 0 | A loss of containment was reported after through wall cracking was found in a steam assisted gravity drainage facility. The owner has determined the probable cause to be excess heat during operation. | Yes |
| 2023-08-28 | 0 | 0 | An ammonia leak from a valve gasket. The leak prompted an evacuation of the site. | Yes |
| 2023-08-26 | 0 | 0 | A fire occurred in a power generation turbine. Probable cause was a lubrication oil leak. | No |
| 2023-08-22 | 0 | 0 | Gylcol plate and frame heat exchanger developed a leak due to gasket failure. | Yes |
| 2023-08-22 | 0 | 0 | An elbow in process piping developed a pinhole leak due to internal corrosion. | Yes |
| 2023-08-22 | 0 | 0 | A fire blanket was used to protect pressure transmitter wiring from nearby welding activity. Hydrocarbons built up under the blanket due to leaking valve. Welding sparks ignited the hydrocarbons starting a fire. | Yes |
| 2023-08-22 | 0 | 0 | An unsafe condition was reported after a safety valve failed to open on a pre-test prior to servicing. Investigation revealed that the pre-tested failed due to combination of debris inside the valve and the lifting lever assembly not functioning. | No |
| 2023-08-16 | 0 | 0 | An unsafe condition was reported after a nitrogen system was found to have relief valves with the set pressure higher than the system design pressure. The owner has determined that this was overlooked during the design stage. | No |
| 2023-08-14 | 0 | 0 | A produced water line developed a pinhole leak releasing approximately 200 liters of fluid. The owner has determined the cause to be internal corrosion. | Yes |
| 2023-08-10 | 0 | 0 | A steam pipeline was struck by the bucket of an excavator working in close proximity. Damage limited to the insulation, cladding, as well as surface markings on the pipe. No loss of containment reported. | No |
| 2023-08-08 | 0 | 0 | Oil treater firetube failure at the mitre joint reported. The owner has determined the probable cause to be thermal fatigue. | Yes |
| 2023-08-04 | 0 | 0 | An air receiver developed a through wall crack due to vibration induced fatigue. | Yes |
| 2023-08-03 | 0 | 0 | Loss of containment reported from amine piping failure at an elbow. The owner has determined the cause to be internal corrosion. | Yes |
| 2023-08-03 | 0 | 0 | Oil treater firetube failure at the mitre joint reported. The owner has determined the probable cause to be cyclic fatigue. | Yes |
| 2023-08-03 | 0 | 0 | Heat exchanger tube bypassing. The probable cause of the failure cited was thermal expansion/contraction during flow and pressure variations while in operation. | Yes |
| 2023-08-01 | 0 | 0 | Heat tracing failure caused freezing in condensate piping, resulting in a loss of containment. | Yes |
| 2023-08-01 | 0 | 0 | Heat tracing failure caused freezing in steam and condensate lines, resulting in multiple splits/leaks. | Yes |
| 2023-07-31 | 0 | 0 | A steam condensate header developed a leak due to corrosion/erosion. | Yes |
| 2023-07-28 | 0 | 0 | Two plate heat exchangers were discovered to be leaking. The probable cause of the accident was determined to be weld cracking on the internal heat transfer plate pack. | Yes |
| 2023-07-27 | 0 | 0 | Abnormal flow was discovered in a heat exchanger. Upon investigation the heat exchanger was found to have a leak in a tube allowing shell side process fluid into tube side. The owner has determined the cause to be under deposit corrosion inside the tube. | Yes |
| 2023-07-27 | 0 | 0 | A steam header froze and split and leaking on startup. The split was a result of a deadleg and subsequent freezing. | Yes |
| 2023-07-27 | 0 | 0 | A 2 inch condensate line froze due to an accumulation of liquid in a deadleg. | Yes |
| 2023-07-26 | 0 | 0 | Condensate piping developed a pinhole leak from a pipe elbow. The owner believes the cause to be steam impingement erosion/corrosion. | Yes |
| 2023-07-25 | 0 | 0 | An operator discovered a hole in the spool piping to a flare line. Owner has determined the probable cause to be erosion due to entrained sand in well fluid. | Yes |
| 2023-07-20 | 0 | 0 | A ¾ inch threaded pipe nipple on a gas compressor developed a crack resulting in a leak. The owner has determined the cause to be vibration and fatigue. | Yes |
| 2023-07-19 | 0 | 0 | During the hauling of the portable storage tank, the tank struck a powerline causing damage to a tank nozzle. Cause of incident attributed to failure to follow procedure regarding height restrictions. | No |
| 2023-07-14 | 0 | 0 | A ammonia refrigeration coil developed a pinhole leak on a finned tube. The area was evacuated, equipment isolated and vented. | Yes |
| 2023-07-14 | 0 | 0 | Unsafe condition reported due to a propane tank being damaged due to wildfires. | No |
| 2023-07-13 | 0 | 0 | A passing line valve in a process piping system caused internal erosion of a spool, resulting in a pinhole leak. | Yes |
| 2023-07-11 | 0 | 0 | Fire occurred at a wellsite. This was not caused by pressure equipment but did damage a fuel gas scrubber. Fire was believed to be ignited by a pump jack after a gas regulator failed venting gas. | No |
| 2023-07-10 | 0 | 0 | An air cooled Heat exchanger developed a pin hole leak from one of the tubes. The owner believes that the leak is caused by concentration cell corrosion as a result of under-deposit corrosion. | Yes |
| 2023-07-10 | 0 | 0 | A pinhole leak was found on a piping elbow. The owner has determined that the probable cause was erosion due to entrained sand & other instream solids and high flow rates through the piping. | Yes |
| 2023-07-08 | 0 | 0 | A ¾ inch compression fitting in a pneumatic tubing system became loose resulting in a loss of containment. The owner has determined the cause to be inadequate supports. | Yes |
| 2023-07-07 | 0 | 0 | Boiler feed water piping failed through wall due to corrosion under insulation. | Yes |
| 2023-07-04 | 0 | 0 | A treater fire tube developed a crack at the mitre joint allowing fluid on the burner side resulting in a fire. Cause believed to be fatigue. | Yes |
| 2023-07-02 | 1 | 0 | A deviation from operating procedure resulted in a gas leak and subsequent explosion in a separator building. | Yes |
| 2023-06-29 | 0 | 0 | A treater developed a crack on a weld due to fatigue, causing a leak into the firetube. This resulted in black smoke prior to being flooded with wash water. | Yes |
| 2023-06-29 | 0 | 0 | A leak was found from a section of pressure piping. Stagnant flow and possible under deposit corrosion was deemed as the probable cause. | Yes |
| 2023-06-27 | 0 | 0 | A furnace explosion was reported due to a faulty gas valve. | No |
| 2023-06-22 | 0 | 0 | An ammonia odor was detected from the brine expansion tank at an ice arena. It was determined that the chiller had developed a leak. Probable cause is believed to be a manufacturing defect or corrosion. Chiller removed from service to be replaced. | Yes |
| 2023-06-22 | 0 | 0 | A piping system in hydrogen service developed a leak on an isolation valve. The leaked hydrogen resulted. It is believed that valve packing failure was the cause of the leak. | Yes |
| 2023-06-21 | 0 | 0 | A piping spool on a centrifuge developed a leak due to erosion/corrosion. | Yes |
| 2023-06-20 | 0 | 0 | A leak was discovered from a section of pressure piping. The leak is believed to have been caused by a dead leg which resulted in internal corrosion. | Yes |
| 2023-06-19 | 0 | 0 | A pinhole leak was found on a flanged connection to a plug valve. Probable cause was identified as improper torquing resulting in a gasket leak. | Yes |
| 2023-06-18 | 0 | 0 | A fired heater (part of a thermal liquid heating system) developed a crack on the weld of the fire tube. Probable cause is believed to be fatigue. | Yes |
| 2023-06-16 | 0 | 0 | It was identified that a portion of below grade piping (2 inch steam blowdown), had developed a leak due to internal corrosion/erosion. | Yes |
| 2023-06-15 | 0 | 0 | During a facility shutdown, a treater was cleaned and inspected. During this the studs and nuts were found to be excessively corroded and ultimately the wrong grade for high temperature and sour service. | Yes |
| 2023-06-15 | 0 | 0 | A pinhole leak was found on a valve in a piping system. The owner has determined the most probable cause of the leak is flow assisted corrosion and cavitation due to large pressure drop across the valves. | Yes |
| 2023-06-15 | 0 | 0 | A propane tank was affected by a forest fire in northern Alberta. The tank is being evaluated to ensure it is safe for continued operation. | Yes |
| 2023-06-14 | 0 | 0 | A section of 1 inch steam piping developed a leak due to a 4 inch long split. The probable cause is a freezing caused by deviation from winterization procedures. | Yes |
| 2023-06-14 | 0 | 0 | A pinhole leak was discovered from a reducer on a steam line. The cause is believed to be corrosion from excessive moisture in the steam (wet steam). | Yes |
| 2023-06-14 | 0 | 0 | A 4 inch split was identified in a furnace tube of a hydrogen reformer. The probable cause is believed to be creep related fatigue. | Yes |
| 2023-06-14 | 0 | 0 | Condensate piping was found to have a 12-14 inch long split. This is believed to be caused by preferential flow resulting in wall loss. | Yes |
| 2023-06-14 | 0 | 0 | An unsafe condition was reported due to an engineered enclosure which was designed for 100 psi was found in service on a steam line designed for 650 psi. The line was isolated and all applicable components replaced. | No |
| 2023-06-13 | 0 | 0 | A leak was discovered from the channel flange connection of a heat exchanger. The probable cause is improper torquing of the channel cover studs. | Yes |
| 2023-06-13 | 0 | 0 | A turbine had a cooling water failure resulting in a fire. The fire was not caused by pressure equipment but did damage a small section of the steam piping. | No |
| 2023-06-13 | 0 | 0 | The movement of the low pressure steam line resulted in bending of two blowdown lines. Owner believes the cause to be water hammer. | No |
| 2023-06-09 | 0 | 0 | An unsafe condition was reported due to a rupture disc release from a flare knockout drum. Probable cause is believed to be back pleasure from the flare combined with excess air being drawn into the system. | Yes |
| 2023-06-08 | 0 | 0 | A leak was discovered in a portion of piping going the flare line . The owner believes that the leak was caused by a corroded fitting on the line. | Yes |
| 2023-06-06 | 0 | 0 | A 1 inch piping line failed due to malfunction of controls which resulted in an overpressure and subsequent loss of containment. | Yes |
| 2023-06-05 | 0 | 0 | An unsafe condition was reported as a result of wildlife pushing a propane cylinder off its base supports. No loss of containment reported. | No |
| 2023-06-04 | 0 | 0 | While refilling a boiler after a shutdown, showed signs of lower tube leaks into the furnace area. Probable cause is likely erosion/corrosion. | Yes |
| 2023-06-04 | 0 | 0 | An unsafe condition was reported after a temporary boiler was installed and upon startup, it was discovered that the safety valve was arbitrarily releasing. It was determine that the boiler was oversized for the application. | No |
| 2023-06-03 | 0 | 0 | A 4 inch globe valve developed a pin hole leak due to erosion/corrosion from service. | Yes |
| 2023-05-31 | 0 | 0 | During start up, a ¾ inch steam line failed. Probable cause is a combination of external corrosion and inadequate room (restriction) during thermal expansion. | Yes |
| 2023-05-31 | 0 | 0 | An unsafe condition was reported due excessive wall thinning on the internal shell surface of vessel. The owner has determined that a sparge line located inside the vessel was directed toward the shell wall resulting in erosion. | No |
| 2023-05-31 | 0 | 0 | A condensate line experienced a freeze event due to a dead leg and inadequate freeze protection. | Yes |
| 2023-05-30 | 0 | 0 | Below grade condensate piping developed a leak. The probable cause is believed to be a combination of external and internal corrosion. | Yes |
| 2023-05-29 | 0 | 0 | A shell and tube heat exchanger developed a leak (water) on the bottom of the shell. The cause is believed to be fretting from internals combined with accelerated corrosion at that location. | Yes |
| 2023-05-29 | 0 | 0 | A Pinhole leak was found on an elbow in a piping line. Probable cause was attributed to thinning due to erosion/corrosion. | Yes |
| 2023-05-23 | 0 | 0 | During startup a diluted bitumen line experienced a water hammer event, which caused the line to jump off its supports. This resulted in bending of the drain piping and caused a valve bonnet gasket failure and subsequent leak. | Yes |
| 2023-05-22 | 0 | 0 | A ½ inch section of pipe failed due to vibration induced fatigue causing a gas release, resulting in a fire in a natural gas compressor building. Other equipment, vessels and piping are being assessed for extent of damage. | Yes |
| 2023-05-20 | 0 | 0 | An air-cooled heat exchanger developed tube leaks during start up. The cause is believed to be freeze damage during the recent outage. | Yes |
| 2023-05-19 | 0 | 0 | A once through steam generator had several tubes leaking from mechanical damage resulting in a loss of containment. | Yes |
| 2023-05-18 | 0 | 0 | Three air cooled heat exchangers were exposed to a fire. Owner believes the cause to be a tube failure which released hydrocarbon gas which ignited. | Yes |
| 2023-05-18 | 0 | 0 | An unsafe condition was reported when several welded joints on a once through steam generator (OTSG) were found to be of the incorrect chemical composition. | No |
| 2023-05-17 | 0 | 0 | A leak from a cracked tube in a power boiler was discovered. Probable cause of the tube failure/crack was thermal stress caused by uneven heating and expansion between the firebox and economizer. | Yes |
| 2023-05-16 | 0 | 0 | Steam/condensate piping and coils experienced a freezing event causing a leak. These lines had not been designed or installed in a way to prevent freezing due to cold ambient temperatures. | Yes |
| 2023-05-11 | 0 | 0 | A gate valve (NPS 6) in glycol service developed a leak due to failure of the bonnet seal. | Yes |
| 2023-05-11 | 0 | 0 | An air cooled heat exchanger (propane service) developed a tube leak that is believed to be from corrosion under deposits. | Yes |
| 2023-05-10 | 0 | 0 | Cryogenic plate heat exchanger nozzle developed a crack resulting in a loss of containment following an emergency shutdown and restart. It was determined that the failure mechanism was liquid metal embrittlement. | Yes |
| 2023-05-09 | 0 | 0 | A leak in a power boiler firebox resulted in a loss of containment. Owner has indicated the probable cause to be stress assisted corrosion. | Yes |
| 2023-05-09 | 0 | 0 | A piping elbow downstream of a suction scrubber developed a gas leak, caused by vibrations resulting in fatigue and ultimately cracking. | Yes |
| 2023-05-05 | 0 | 0 | A high efficiency hot water heating boiler developed a tube leak. Probable cause is believed to be cracking from fatigue | Yes |
| 2023-05-05 | 0 | 0 | Burner misalignment on an oil treater firetube resulted in a localized hotspot causing an internal leak. | Yes |
| 2023-05-04 | 4 | 0 | An employee manipulated a valve at an ammonia loading station resulted in a release of ammonia. This incident was not caused by a failure of pressure equipment; rather, misoperation of a valve within an ammonia loading system. | No |
| 2023-05-04 | 0 | 0 | A pinhole leak found from a condensate line. The cause of the loss of containment is erosion and corrosion of a carbon steel elbow. | Yes |
| 2023-05-02 | 0 | 0 | A leak was detected after a piping system start-up. Probable cause of the leak is corrosion under insulation. | Yes |
| 2023-05-02 | 0 | 0 | Leak from a frame plate heat exchanger was attributed to the incorrect torquing of the bolts. | Yes |
| 2023-05-02 | 0 | 0 | A hot water heating boiler developed a tube leak due to a lack of water treatment. | Yes |
| 2023-04-30 | 0 | 0 | An 8 inch rubber expansion joint, in boiler feed water service, developed a leak due to fatigue. | Yes |
| 2023-04-28 | 0 | 0 | Steam piping developed a leak at a socket welded tee connection. The cause is believed to be from a combination of both internal and external corrosion. | Yes |
| 2023-04-27 | 0 | 0 | A leak on a steam header was discovered. The leak was determined to have been caused by a previous weld repair. | Yes |
| 2023-04-26 | 0 | 0 | A steam condensate line developed a pinhole leak, from a 2 inch elbow, due to internal corrosion. | Yes |
| 2023-04-26 | 0 | 0 | Boiler blowdown piping developed wall thinning and ultimately a leak, caused by internal corrosion and high velocity erosion. | Yes |
| 2023-04-25 | 0 | 0 | Oil treater firetube collapsed due to overheating as a result of excessive scale buildup on the firetube surface. | Yes |
| 2023-04-25 | 0 | 0 | A 1 inch socket welded pipe nipple, on the discharge side of a pump, developed a crack due to the pump vibration. | Yes |
| 2023-04-24 | 0 | 0 | A heat recovery steam generator developed a tube leak due to corrosion. The tube was located on the preheater and was exposed to external corrosion from the flue gas moisture | Yes |
| 2023-04-17 | 0 | 0 | A section of piping was isolated during the winter, but due to passing valves, condensate filled the pipe and had a freezing event causing the pipe to split open. | Yes |
| 2023-04-17 | 1 | 0 | A person received burns from hot sulphur that leaked while unloading a truck. The leak developed from the truck/loading hose coupling. | Yes |
| 2023-04-17 | 0 | 0 | A heat exchanger experienced elevated temperatures above the maximum allowable due to a power supply issue that affected the pumps and cooling fans. | No |
| 2023-04-17 | 0 | 0 | An oil treater firetube developed an internal leak resulting in smoke/fire contained within the firetube and stack. Excessive scale build up preventing heat transfer causing the mitre section to overheat and fail at a weld. | Yes |
| 2023-04-15 | 0 | 0 | Horizontal heat exchanger was found to have a leak at a weld. The owner believes the leak was caused by cracking due to the joint design. | Yes |
| 2023-04-10 | 0 | 0 | A fire was reported inside an oil treater building. The fire was not caused by a loss of containment. | No |
| 2023-04-10 | 0 | 0 | A pinhole leak was found on gas boot of oil treater due to internal corrosion. | Yes |
| 2023-04-07 | 0 | 0 | Steam/condensate drain piping developed a pinhole leak due to erosion/corrosion caused from passing valves and piping orientation. | Yes |
| 2023-04-05 | 0 | 0 | Condensate piping (6 inch) developed a leak near a reducer due to turbulence and erosion/corrosion. | Yes |
| 2023-04-05 | 0 | 0 | A 4 inch gate valve on an emulsion piping system developed a leak due to a freezing event. Lack of insulation was determined to be the cause. | Yes |
| 2023-04-04 | 1 | 0 | A worker was burned by hot water while conducting routine pump maintenance. The owner has determined that inadequate procedures led this incident. | Yes |
| 2023-04-04 | 0 | 0 | Leaking tubes noticed on air cooled heat exchanger. The cause has been attributed to cold and hot cycles in the weather causing leaks at the rolled tube ends. | Yes |
| 2023-04-02 | 0 | 0 | A 1 inch valve (located near steam trap) developed a pinhole leak due to corrosion caused by steam and condensate. | Yes |
| 2023-03-30 | 0 | 0 | A 1 inch threaded pipe nipple, in water service downstream of a separator, developed a pinhole leak due to corrosion. | Yes |
| 2023-03-30 | 0 | 0 | A mechanically assembled air piping system had multiple locations fail, resulting in releases and ultimately a minor injury to a workers arm. Probable causes may include inadequate training, installation, and testing of the piping components. | Yes |
| 2023-03-30 | 0 | 0 | Mechanically assembled compressed air piping system had a failure/release due to incorrect installation/construction. | Yes |
| 2023-03-29 | 0 | 0 | A condensate drum had a leak from a nozzle repad weep hole. Probable cause of the loss of containment was determined to be mechanical fatigue of nozzle caused by premature flashing of condensate prior to entering vessel. | Yes |
| 2023-03-29 | 0 | 0 | Steam leak on piping elbow. The probable cause of the loss of containment is erosion due to entrained water droplets impinging on the internal pipe surface. | Yes |
| 2023-03-28 | 0 | 0 | Treater firetube developed a pinhole leak due to corrosion on the product side. The leak resulted in a uncontrolled fire within the firetube, which was quickly extinguished before causing further damage. | Yes |
| 2023-03-28 | 0 | 0 | A safety valve at a chemical unloading station was not functioning correctly and was relieving below set pressure. Upon observation, it appeared that the safety valve had signs of physical damage. | No |
| 2023-03-24 | 0 | 0 | Steam coil developed a leak on tube to header connection due to fatigue. | Yes |
| 2023-03-23 | 0 | 0 | Failed tubes in an air cooled heat exchanger resulted in a loss of containment. The Owner believes the probable cause to be freeze damage. | Yes |
| 2023-03-23 | 0 | 0 | Pinhole leak discovered on a water filter pot. Probable cause is noted as the corrosive produced water. | Yes |
| 2023-03-23 | 0 | 0 | Amine reboiler developed a shell leak due to internal corrosion caused by oxygen and amine degradation. | Yes |
| 2023-03-21 | 0 | 0 | A leak was found from a pinhole in emulsion piping due to internal erosion. | Yes |
| 2023-03-20 | 0 | 0 | Produced water piping developed a leak due to microbiological corrosion. | Yes |
| 2023-03-20 | 0 | 0 | A crack was discovered on the relief valve inlet piping due to vibration. | Yes |
| 2023-03-20 | 0 | 0 | A freeze plug was reported to have formed in process piping resulting in an unsafe condition report. The owner has determined the heat tracing was inadequate. | No |
| 2023-03-20 | 0 | 0 | A pinhole leak in a section of discharge piping downstream of a vapor recovery was discovered. The pinhole was a result of internal corrosion. | Yes |
| 2023-03-17 | 0 | 0 | A section of hydrogen piping developed a leak as a result of loose pipe supports wearing through the pipe. | Yes |
| 2023-03-16 | 0 | 0 | Corrosion under insulation (CUI) is believed to be the cause of a leak from steam piping. | Yes |
| 2023-03-16 | 0 | 0 | Loss of containment between the tube sheet and tubes of a vapour condenser. Owner believes the probable cause to be corrosion/mechanical degradation of the tube. | Yes |
| 2023-03-15 | 0 | 0 | An air cooled heat exchanger developed a tube leak as a result of freezing. The owner has determined inadequate winterization procedures to be the cause. | Yes |
| 2023-03-14 | 0 | 0 | A leak developed from a portion of a 16 inch steam condensate piping line due to internal erosion/corrosion on a reducer fitting | Yes |
| 2023-03-13 | 0 | 0 | A leak on the drain nozzle of the carbon dioxide flash tank was reported. The probable cause of the loss of containment is erosion corrosion. | Yes |
| 2023-03-11 | 0 | 0 | A heat tracing breaker tripped resulting in the freezing of a portion of a 10 inch hydrocarbon drain system piping. No loss of containment reported. | No |
| 2023-03-11 | 0 | 0 | A gas cooler experienced gas leak as a result of a the tubes. The owner believes that the tube was not adequately rolled. | Yes |
| 2023-03-10 | 0 | 0 | A vertical separator developed a leak at the boot head due to internal corrosion. The owner believes the corrosion is a result of microbiologically influenced corrosion (MIC). | Yes |
| 2023-03-10 | 0 | 0 | A pinhole leak in a 2 inch utility air line was discovered. Probable cause is general corrosion/pitting. | Yes |
| 2023-03-09 | 0 | 0 | A section of drain piping leaked due to freezing as a result of failed heat tracing. | Yes |
| 2023-03-08 | 0 | 0 | A pressure vessel (separator) developed internal pitting due to under-deposit corrosion. | No |
| 2023-03-08 | 0 | 0 | Process steam piping developed a leak from an isolation valve bonnet caused due to freezing. The owner believes the valve had been passing fluid and a lack of insulation to be the cause. | Yes |
| 2023-03-07 | 0 | 0 | A heat exchanger developed a crack on at non-pressure retaining attachment weld and propagated into the pressure boundary. The Owner believes the probable cause to be service related corrosion which initiated the crack. | No |
| 2023-03-07 | 0 | 0 | A piping elbow developed a leak due to internal corrosion. | Yes |
| 2023-03-07 | 0 | 0 | Freezing caused a section of steam piping to split due to malfunctioning heat tracing. | Yes |
| 2023-03-06 | 0 | 0 | A fire was discovered at a tube to header weld of a furnace. The owner believes the cause to be poor original fabrication creating a high stress concentration at this location, and potential thermal fatigue. | Yes |
| 2023-03-05 | 0 | 0 | A 4 inch globe valve developed a pinhole leak in the valve body due to steam erosion/corrosion. | Yes |
| 2023-03-03 | 0 | 0 | Waste heat boiler developed a leak into the furnace. The leak was a result of tube seal welds cracking from corrosion and extended time in service. | Yes |
| 2023-03-03 | 0 | 0 | A heat exchanger developed a tube leak due to freezing as a result of its heater tripping off while the exchanger was out of service. | Yes |
| 2023-03-01 | 0 | 0 | A heat exchanger developed several tube to tube sheet leaks due to freezing. The owner has determined that residual fluid not drained adequately resulted in the freezing. | Yes |
| 2023-03-01 | 0 | 0 | An unsafe condition was reported as a result of excessive pitting discovered in a separator during an inspection. The separator has been removed from service. | No |
| 2023-03-01 | 0 | 0 | An unsafe condition was reported due to operations staff shortages at n industrial site. The owner will safely take the facility offline. | No |
| 2023-03-01 | 0 | 0 | Operations discovered unintentional gas venting from the top of an aerial cooler due to freezing. | Yes |
| 2023-02-28 | 0 | 0 | A demineralized water piping section ruptured due to freezing. The owner determined that the heat tracing was not activated. | Yes |
| 2023-02-28 | 0 | 0 | A chemical injection line was damaged due to freezing resulting in an unsafe condition report. No loss of containment reported and the owner has confirmed that the heat tracing was inadequate. | Yes |
| 2023-02-28 | 0 | 0 | A piping system developed a leak from the steam trap due to freezing. The owner has determined that the insulation and heat tracing on that portion of the piping system was inadequate. | Yes |
| 2023-02-27 | 0 | 0 | A steam coil developed crack on a fillet weld resulting in a leak due to poor design. | Yes |
| 2023-02-24 | 0 | 0 | Start-up steam piping froze and ruptured, resulting in a loss of containment. Owner believes the probable cause of the freezing was the single block valve left open on the blinded line creating a dead leg. | Yes |
| 2023-02-23 | 0 | 0 | A valve developed a pin hole leak due to steam erosion/corrosion. | Yes |
| 2023-02-22 | 0 | 0 | A leak from the lower panel connected to an amine reboiler inlet was discovered. The owner believes that the leak was caused by cracking on the plate pack resulting from temperature fluctuations. | Yes |
| 2023-02-21 | 0 | 0 | A hydrocarbon drain line was found to be leaking fluid. The Owner believes the leak to be caused by a combination of corrosion and erosion. | Yes |
| 2023-02-20 | 0 | 0 | 138. A 10 inch gate valve, in an amine system, developed a pinhole leak in the valve body due to internal corrosion. | Yes |
| 2023-02-19 | 0 | 0 | An air cooled heat exchanger had a pressure excursion causing a baffle plate to become damaged, resulting in a loss of containment. | No |
| 2023-02-17 | 0 | 0 | Condensate piping ruptured at an elbow due to the combination of internal corrosion and water hammer. | Yes |
| 2023-02-15 | 0 | 0 | A temperature excursion on an air receiver resulted in smoke and overheated piping. The Owner believes the probable cause to be leaking valves allowing lubricant into the vessel. | No |
| 2023-02-13 | 0 | 0 | A glycol leak was discovered from heat tracing installed on flare piping. Pinhole leaks were discovered on the heat tracing. Owner believes the probable cause to be corrosion under insulation (CUI). | Yes |
| 2023-02-13 | 0 | 0 | Boiler feedwater piping developed a leak due to flow accelerated corrosion. | Yes |
| 2023-02-09 | 0 | 0 | An oil treater developed a pinhole leak from the firetube as a result of solids build up and under deposit corrosion. | Yes |
| 2023-02-08 | 0 | 0 | Boiler blowdown piping developed a leak due to erosion/corrosion. | Yes |
| 2023-02-07 | 0 | 0 | A crack formed on the weld connecting a flange to a suction bottle. The owner believes the probable cause to be due to vibration. | Yes |
| 2023-02-07 | 0 | 0 | An unsafe condition was reported when an economizer section of a boiler was operating without a pressure relief device installed. Lack of formal procedures for start-up was cited as the probable cause. | No |
| 2023-02-04 | 0 | 0 | Steam/bitumen piping elbow developed a leak due to internal corrosion/erosion. | Yes |
| 2023-02-03 | 0 | 0 | A steam trap failed releasing steam. The owner suspects the cap on the trap was possibly faulty or eroded. | Yes |
| 2023-02-02 | 0 | 0 | A small crack was discovered on the side of pressure vessel. The owner believes the cause of the the crack to be a stress fracture. | Yes |
| 2023-02-02 | 0 | 0 | Operations discovers a leak from an aerial cooler tube. Probable cause was identified as inadequate installation of the tube (under-rolled on tube end). | Yes |
| 2023-01-31 | 0 | 0 | Multiple leaks discovered from several pressure piping systems. The owner has attributed the leaks to corrosion. | Yes |
| 2023-01-31 | 0 | 0 | Air cooled heat exchanger developed tube leaks as a result of freezing. | Yes |
| 2023-01-27 | 0 | 0 | Multiple lean amine coolers developed pinhole leaks in tubes due to internal corrosion. | Yes |
| 2023-01-27 | 0 | 0 | A condensate leak was discovered by operations. The probable cause was cited as erosion caused by impingement on the elbows. | Yes |
| 2023-01-27 | 0 | 0 | A watertube boiler developed a tube leak due to fatigue at the soot blower attachment welds. | Yes |
| 2023-01-26 | 0 | 0 | A pinhole leak was found from the channel head discharge nozzle of a vent condenser. Owner believes the probable cause to be internal corrosion. | Yes |
| 2023-01-25 | 0 | 0 | Globe valve in steam service developed a pinhole leak in valve body due to internal corrosion. | Yes |
| 2023-01-25 | 0 | 0 | 123. A process piping spool was found to have failed due to internal corrosion. The owner believes the cause to be maintenance related as the line was not properly drained when not in use for extended periods. | Yes |
| 2023-01-24 | 0 | 0 | A watertube boiler developed tube leaks due to corrosion/erosion. | Yes |
| 2023-01-24 | 0 | 0 | An operator discovered a pinhole leak from a section of process piping. The owner believes the probable cause to be internal corrosion. | Yes |
| 2023-01-24 | 0 | 0 | Internal corrosion caused a piping spool ending in a deadleg to fail. The Owner believes the probable cause to be due to the deposits in the deadleg. | Yes |
| 2023-01-23 | 0 | 0 | A leak was discovered from steam piping. The owner believes the cause to be corrosion under insulation (CUI). | Yes |
| 2023-01-20 | 0 | 0 | Condensate piping froze and split due to heat tracing malfunction. | Yes |
| 2023-01-20 | 0 | 0 | Reboiler fire tube developed a crack in the miter bend welds that resulted in an internal oil fire. | Yes |
| 2023-01-19 | 0 | 0 | A loss of containment from process piping was reported. The leak originated from a crack on a threaded nipple on the drain piping, which the owner believes was caused by repeated stress on the nipple from personnel stepping on the piping. | Yes |
| 2023-01-18 | 0 | 0 | Economizer developed a tube leak due to freezing. | Yes |
| 2023-01-18 | 0 | 0 | An oil treater developed several through wall cracks on the welds of a firetube due to thermal fatigue. | Yes |
| 2023-01-17 | 0 | 0 | A leak was discovered from the drain on a test separator due to a leaking plug. | Yes |
| 2023-01-17 | 0 | 0 | An unintentional fire was reported in a direct fired heater as a result of a leak from the tube bundle. The owner believes the leak was caused by localized overheating of the bundle resulting in a through wall defect. | Yes |
| 2023-01-17 | 0 | 0 | A leak from the drain line of a steam turbine was reported. The leak was a result of a crack due to freezing. The freezing was caused by the failure of heat tracing. | Yes |
| 2023-01-17 | 0 | 0 | Preheater section of boiler developed a tube leak due to external corrosion. | Yes |
| 2023-01-17 | 0 | 0 | An unsafe condition was reported after the discovery of corrosion under insulation on a two inch sweet gas piping system. | No |
| 2023-01-17 | 0 | 0 | An elbow in a process piping system developed a leak. The Owner believes the probable cause of failure to be internal sand erosion. | Yes |
| 2023-01-16 | 0 | 0 | A leak was discovered from a medium consistency heater. The leak was a result of the safety valve inlet cracking and breaking off in the threaded area. The owner believes the cause to be excessive vibration during service. | Yes |
| 2023-01-16 | 0 | 0 | A fresh water heater shell was overheated due to a fire. The owner believes the fire was a result of an electrical issue in the process building. | Yes |
| 2023-01-16 | 0 | 0 | A through wall Crack was found in the circumferential weld between the channel and shell of a heat exchanger. The owner suspects the most likely cause is a manufacturing defect. | Yes |
| 2023-01-16 | 0 | 0 | An unsafe condition was reported due to the discovery of a frozen one inch steam line. The freezing was a result of failed heat tracing. | No |
| 2023-01-16 | 0 | 0 | A leak was discovered in a steam generator due to corrosion. | Yes |
| 2023-01-13 | 0 | 0 | A Section of 16 inch above-ground steam piping was found ruptured due to freezing. Owner believes probable cause to be the presence of residual water as a result of not draining the line adequately. | Yes |
| 2023-01-12 | 0 | 0 | Air-cooled heat exchanger developed a tube leak due to internal corrosion. | Yes |
| 2023-01-12 | 0 | 0 | A leak was discovered from a rolled tube end on a lean amine cooler. The owner believes the leak is a result of thermal cycling. | Yes |
| 2023-01-12 | 0 | 0 | During maintenance, a flange was unbolted resulting in loss of containment of hydrocarbon and a subsequent fire. | Yes |
| 2023-01-12 | 0 | 0 | Air-cooled heat exchanger leaked gas on initial start up, this is believed to be due to freeze damage. The leaking gas resulting in a fire. | Yes |
| 2023-01-12 | 0 | 0 | A process upset caused a plate and frame heat exchanger to have a pressure excursion resulting in a loss of containment. | Yes |
| 2023-01-11 | 0 | 0 | A Leak on a heating boiler was reported. The leak was caused by cracking due to overheating. The boiler overheated as a result of by-passing the low water cut-off device. | Yes |
| 2023-01-10 | 0 | 0 | An unsafe condition was reported due to the discovery of safety valve discharge piping not being installed in a manner to discharge into a safe location. | No |
| 2023-01-09 | 0 | 0 | Sour gas piping the developed a leak due to corrosion. | Yes |
| 2023-01-09 | 0 | 0 | A leak was discovered from a pressure piping system piping and it was determined internal erosion/corrosion was the cause. | Yes |
| 2023-01-09 | 0 | 0 | A pinhole resulted in a leak on pressure piping. Internal corrosion is the suspected cause of the leak. | Yes |
| 2023-01-08 | 0 | 0 | A fire was discovered between a coker feed furnace and coke drum line. The Owner believes the probable cause to be spillage of a combustible substance used on valves to prevent coke build-up. | Yes |
| 2023-01-06 | 0 | 0 | Emulsion piping developed a leak due to a pinhole in an elbow. | Yes |
| 2023-01-05 | 0 | 0 | A tube was found to be ruptured on an aerial cooler due to hydrate formation and freezing. | Yes |
| 2023-01-05 | 0 | 0 | A socket weld was found to be cracked and leaking on a steam coil. | Yes |
| 2023-01-04 | 0 | 0 | A crack in firetube of a oil treater discovered. Owner believes the cause to be thermal fatigue due to temperature swings causing cyclic loading. | Yes |
| 2023-01-03 | 0 | 0 | During maintenance activities, the tube side of a heat exchanger was isolated from the safety relief device, causing pressure to increase eventually resulting in a failure. | Yes |
| 2023-01-03 | 0 | 0 | Piping of incorrect thickness was installed and resulted in a loss of containment. | Yes |
| 2023-01-03 | 0 | 0 | Level column piping developed a leak due to corrosion caused by lack of blowdown resulting in a dead leg. | Yes |
| 2023-01-03 | 0 | 0 | Pump discharge piping developed a leak due to external corrosion under insulation. | Yes |
| 2023-01-02 | 0 | 0 | 89. Low pressure feed water heater of a Heat Recovery Steam Generator (HRSG) developed a crack on the tube to header fillet weld. Owner has determined the cause to be thermal fatigue. | Yes |
| 2022-12-30 | 0 | 0 | An emulsion line failed due to flow induced erosion. | Yes |
| 2022-12-29 | 0 | 0 | A flanged connection to an air cooled heat exchanger leaked resulting in a fire. | Yes |
| 2022-12-29 | 0 | 0 | Leak found from pump suction piping. The Owner believes the cause to be microbiological influenced corrosion (MIC). | Yes |
| 2022-12-29 | 0 | 0 | Steam condensate line failed due to internal erosion/corrosion from service. | Yes |
| 2022-12-28 | 0 | 0 | A leak was discovered from a air cooled heat exchanger as a result of freeze damage. | Yes |
| 2022-12-28 | 0 | 0 | Unsafe condition reported due to the discovery of a frozen steam trap on a low pressure steam condensate line. No loss of containment. | No |
| 2022-12-21 | 0 | 0 | Operations discovered a leak from a skid flare line. The owner determined the leak was caused by a through wall crack due to a broken support bracket resulting in higher stresses in the piping. | Yes |
| 2022-12-19 | 0 | 0 | Steam piping failed due to low ambient temperatures which resulted in freezing. | Yes |
| 2022-12-17 | 0 | 0 | A compressor station fire reported as a result of lubrication oil leak. | Yes |
| 2022-12-17 | 0 | 0 | A failed portion low pressure piping resulted in a loss of containment due to freezing. The owner has determined freezing was a result of an accumulation of condensate at a deadleg and valves inadvertently closed preventing flow. | Yes |
| 2022-12-15 | 0 | 0 | Heat tracing failure resulted in a portion of 6 inch process piping and a gate valve failing due to freeze damage. | Yes |
| 2022-12-12 | 0 | 0 | An unsafe condition was reported due to freezing piping resulting from lack of flow at a deadleg. No loss of containment. | No |
| 2022-12-12 | 0 | 0 | Firetube in a thermal liquid heating system developed a through wall crack due to thermal fatigue. | Yes |
| 2022-12-12 | 0 | 0 | An unsafe condition was reported due to the discovery of a frozen portion of 2 inch pressure piping. No loss of containment resulted and the owner has determined the cause to be lack of heat tracing and stagnant flow at a deadleg. | No |
| 2022-12-12 | 0 | 0 | An unsafe condition was reported due to freezing of drain piping. The owner believes that steam condensate was passing into the drains allowing a buildup of ice. No loss of containment reported. | No |
| 2022-12-09 | 0 | 0 | A pinhole leak in a filter pot resulted in a loss of containment. The owner believes the cause to be internal corrosion. | Yes |
| 2022-12-09 | 0 | 0 | Operations discovered a leak was detected on a ¾ inch threaded nipple attached to an inlet filter separator. While removing the nipple, it cracked and was replaced. | Yes |
| 2022-12-09 | 0 | 0 | Leak from flare knock out (FKO) bypass piping. Leak was a result of corrosion. | Yes |
| 2022-12-08 | 0 | 0 | Free water knock out bypass piping developed a pinhole leak due to internal corrosion. | Yes |
| 2022-12-08 | 0 | 0 | Leaking pipe discovered due to a pinhole. Owner believes the cause to be corrosion under insulation. | Yes |
| 2022-12-06 | 0 | 0 | A fire was reported and the owner has determined that frozen tubes in a heat exchanger releasing hydrocarbon coming into contact with an ignition source. The Owner believes the probable cause to be passing isolation valves. | Yes |
| 2022-12-01 | 0 | 0 | Heating boiler (tubesheet to tube) welds found to be cracked resulting in glycol leak. The owner suspects the cracks were caused by thermal fatigue. | Yes |
| 2022-11-29 | 0 | 0 | An unsafe condition was reported due to an air receiver being identified as operating below minimum allowable thickness. | No |
| 2022-11-27 | 0 | 0 | An elbow on a process piping system failed resulting is a loss of containment. The Owner believes the probable cause to be corrosion. | Yes |
| 2022-11-24 | 0 | 0 | A natural gas line failed resulting in a loss of containment. The owner has determined that a process upset as the cause. | Yes |
| 2022-11-22 | 0 | 0 | An unsafe condition was reported due to an air receiver being identified as operating below minimum allowable thickness. | No |
| 2022-11-15 | 0 | 0 | An acid gas leak was reported from a threaded connection on a vent of a process piping system. | Yes |
| 2022-11-14 | 0 | 0 | A piping line experienced a loss of containment due to freezing. The owner identified some malfunctioning heat tracing to be the probable cause. | Yes |
| 2022-11-14 | 0 | 0 | A pressure piping section experienced a loss of containment due to freezing. The owner identified some malfunctioning heat tracing to be the probable cause. | Yes |
| 2022-11-14 | 0 | 0 | Failure of heat tracing caused freezing of process fluid damaging a check valve, resulting in a loss of containment. | Yes |
| 2022-11-11 | 0 | 0 | Four heat exchangers were found to be damaged due to freezing. Owner has indicated that the probable cause was due to inadequate draining of the fluid during maintenance. | Yes |
| 2022-11-11 | 0 | 0 | An inlet slurry line experienced a loss of containment. The owner believes the cause for this failure to be flow induced erosion during service. | Yes |
| 2022-11-08 | 0 | 0 | With an infrared camera, gas was found leaking from the 3rd stage suction bottle on a compressor. Upon visual examination, a crack was detected at the toe of a re-pad fillet weld on an outlet nozzle as a result of excessive vibration during service. | Yes |
| 2022-11-04 | 0 | 0 | A leak from a power boiler tube was discovered. The owner believes the probable cause to be localized overheating. | Yes |
| 2022-11-03 | 0 | 0 | A loss of containment was reported from a brazed aluminum heat exchanger due to thermal stress induced at start-up from a planned shutdown. The Owner believes the probable cause to be inherent to the design of the heat exchanger. | Yes |
| 2022-11-02 | 0 | 0 | A loss of containment was reported when a skid steer backed into the drain piping connected to the bottom of a propane feed filter vessel. The owner attributes this to human error and inadequate procedure. | Yes |
| 2022-11-01 | 0 | 0 | Loss of containment reported from the threading of an instrument flange. The owner believes the probable cause to be inadequate support for the instrument on piping and vibration during service. | Yes |
| 2022-11-01 | 0 | 0 | During maintenance activities, piping was believed to have been isolated and de-pressurized, when opened, a worker was sprayed with hot amine. The worker was not injured. The owner has determined that inadequate procedures resulted in the incident. | No |
| 2022-10-30 | 0 | 0 | Deaerator developed a leak on the condensate inlet nozzle due to a through wall crack as a result of water hammer induced fatigue. | Yes |
| 2022-10-27 | 0 | 0 | An operator discovered a pinhole leak from a nozzle weld on a hydro-treater vessel. The Owner believes the probable cause of the incident to be localized corrosion resulting in a pinhole at the toe of the nozzle weld to flange. | Yes |
| 2022-10-24 | 0 | 0 | A pin hole leak was discovered in a water injection line filter purge spool line. The owner believes it to be caused by localized corrosion due to stagnant liquid. | Yes |
| 2022-10-22 | 0 | 0 | A leak was discovered from a weld at a nozzle of a pressure vessel. The Owner believes the cause to be stress corrosion cracking. | Yes |
| 2022-10-18 | 0 | 0 | An unsafe condition was reported due to deformation of a power boiler feedwater line to a de-superheater due to contraction during cooling. The deformation was caused by scaffolding which restricted movement of the piping. | No |
| 2022-10-18 | 0 | 0 | Steam condensate piping developed a pinhole leak due to internal corrosion. | Yes |
| 2022-10-13 | 0 | 0 | Crack noted on a shell-to-nozzle weld of a pressure vessel. The owner has indicated that the probable cause may be attributed to excessive vibration. | Yes |
| 2022-10-12 | 0 | 0 | The caustic feed line to hot lime softener developed a leak. Owner suspects cause of the leak to be corrosion under insulation. | Yes |
| 2022-10-08 | 0 | 0 | Fire reported at the outlet-header of a reformer furnace transfer line. The unit was safely shut down without incident. The cause of the fire was determined to be a through wall crack on a weld as a result of creep-fatigue. | Yes |
| 2022-10-06 | 0 | 0 | Operators discovered flames emanating outside the burner of a utility heater furnace. The owner determined that a blocked orifice in the burner to be the cause. | No |
| 2022-10-06 | 0 | 0 | A fire resulted due to an unintentional release of bitumen from a heater pump. The owner has determined the bitumen leaked from the pump casing drain line due to erosion. | Yes |
| 2022-10-05 | 0 | 0 | Unsafe condition reported when an arena refrigeration plant that was shutdown over the summer developed a faint ammonia smell. Service company contacted to ensure ammonia system is leak tight. | Yes |
| 2022-10-04 | 0 | 0 | A pinhole leak found from a drain line from a vessel. The probable cause of this incident is a holiday in the coating previously applied during a repair, leading to corrosion of the weld metal. | Yes |
| 2022-10-04 | 0 | 0 | A fire at an apartment building resulted in boiler damage. The boiler was damaged beyond repair and will be replaced. Owner believes the probable cause to be electrical in nature. | Yes |
| 2022-10-04 | 0 | 0 | A piping spool located at a well entering a test satellite building failed due to internal corrosion. | Yes |
| 2022-10-02 | 0 | 0 | A leak was discovered from a valve in a process facility. The Owner has determined that the probable cause was inadequate torqueing of bonnet bolting. | Yes |
| 2022-10-01 | 0 | 0 | A fire was reported while conducting routine maintenance activities. The owner has determined that the fire was a result of inadequate hot work procedures. | No |
| 2022-09-26 | 0 | 0 | A pinhole leak from the liquid outlet line a raw gas separator. The owner has determined the pinhole to be a result of service related internal erosion-corrosion. | Yes |
| 2022-09-26 | 0 | 0 | A heat exchanger in steam service developed a pinhole leak on shell side resulting in a loss of primary containment. | Yes |
| 2022-09-23 | 0 | 0 | A firetube in a high pressure steam boiler collapsed due to localized overheating. The overheating was a result of excessive scale due to inadequate water treatment. | Yes |
| 2022-09-15 | 0 | 0 | A fire occurred at a wood processing facility wood flakes spontaneously combusting. The Owner has determined the cause to be unrelated to pressure equipment but did result in some pressure piping damage. | Yes |
| 2022-09-14 | 0 | 0 | A fire resulted in damage to several pressure vessels and piping in a compressor building. The owner has determined that the fire was caused by a leak from third stage discharge piping. | Yes |
| 2022-09-13 | 0 | 0 | A fire was reported in a Steam Generator unit. Upon further investigation, the owner confirmed the location of fire to be contained to the Burner Management System (BMS) and confirmed no additional damage to pressure boundary. | No |
| 2022-09-12 | 0 | 0 | A loss of containment reported from an air-cooled heat exchanger. The Owner suspects the leak to be the result of pitting due to corrosion. | Yes |
| 2022-09-06 | 0 | 0 | During maintenance, an unsafe condition was reported when a heat exchanger bundle was found to be damaged. The owner has determined that the exchanger exceeded the maximum design temperature during operation. | No |
| 2022-09-02 | 0 | 0 | An unsafe condition was reported when back pressure from a well entered a test separator and discharged through the safety valve to the flair stack. | Yes |
| 2022-08-30 | 0 | 0 | A heating boiler high limit control tripped but the fuel gas valve did not close resulting in overheating. The safety relief valve operated as intended and controls were damaged from the excessive temperature. | No |
| 2022-08-25 | 0 | 0 | An Emergency Shut Down (ESD) valve did not close properly causing oil to fill the fuel gas scrubber resulting in an unintentional release through a vent on the regulator. | No |
| 2022-08-22 | 0 | 0 | A leak was discovered from a plug on an aerial cooler. The owner has identified cause to be worn plug and incorrect installation of plug. | Yes |
| 2022-08-22 | 0 | 0 | A high pressure boiler tripped causing the PSV super heater to release steam from the safety valve. The discharge piping caused the portion of the wooden roof surrounding it to catch fire. | No |
| 2022-08-22 | 0 | 0 | A crack in a butt weld on the supply piping on a second stage suction scrubber. The owner has determined the crack to be a result of excessive vibration. | Yes |
| 2022-08-19 | 0 | 0 | A heat exchanger exceeded its design temperature due to an operational error. | No |
| 2022-08-18 | 0 | 0 | A fire was reported in a pumpjack engine room due to an unintentional release of hydrocarbon. The owner has determined that the drain valve on the fuel gas scrubber allowed hydrocarbon to come into contact with an ignition source resulting in the fire. | No |
| 2022-08-17 | 0 | 0 | During a severe thunderstorm, a lightning strike occurred at a well site and resulted in a fire damaging a separator building. | No |
| 2022-08-16 | 0 | 0 | A braided hose failed due to mechanical damage. The Owner believes the damage was initiated during installation. | Yes |
| 2022-08-16 | 0 | 0 | During maintenance a pressure vessel was over-pressured due to an incorrect configuration of associated piping. | No |
| 2022-08-12 | 0 | 0 | A drain was leaking from a flange resulting in a loss of containment. The owner has determined the leak was a result of corrosion. | Yes |
| 2022-08-11 | 0 | 0 | A leak was discovered at a catalyst tube flanged connection on a reformer furnace resulting in a fire. The Owner suspects the cause of the fire to be insufficient torque applied to the flange bolts. | Yes |
| 2022-08-10 | 0 | 0 | A pinhole leak was discovered from an amine cooler as a result of internal corrosion. | Yes |
| 2022-08-10 | 0 | 0 | A thermowell injector failure resulted in a loss of containment. Owner suspects the cause to be vibration. | Yes |
| 2022-08-09 | 0 | 0 | A fire was reported at a production facility damaging some pressure piping. The fire was not caused by pressure equipment. | No |
| 2022-08-04 | 0 | 0 | Operations discovered a leak from a weld on the upper bridle nozzle on an Amine Flash Drum. The owner believes this to be a result of high point corrosion due to condensation forming inside the vessel. | Yes |
| 2022-08-03 | 0 | 0 | An unsafe condition was reported due to a localized hot spot on boiler casing due to previously plugged tubes and lack of insulation/cooling effect of tubes between flue gas and outer casing. | No |
| 2022-07-31 | 0 | 0 | Failure of boiler feedwater pipe nipple resulted in a loss of containment. The owner has determine the leak was a result of Corrosion Under Insulation (CUI). | Yes |
| 2022-07-30 | 0 | 0 | Operations discovered leaks from several flanged connections on condensate piping. The owner believes that a water hammer event occurred due to a plant trip resulting in the flanged connections becoming loose. | Yes |
| 2022-07-29 | 0 | 0 | An unsafe condition was reported as a result of abnormally high surface temperature of an air receiver. The owner determined the cause to be oil bypassing into the air receiver and igniting. | No |
| 2022-07-28 | 0 | 0 | Loss of containment reported from a cracked weld on pressure transmitter piping associated with a hydrogen compressor. Owner has determined the crack to be a result of excessive vibration. | Yes |
| 2022-07-28 | 0 | 0 | Failure from service related erosion resulted in a loss of containment from pressure piping of an Incline Plate Separator (IPS) Feed Header System. | Yes |
| 2022-07-27 | 0 | 0 | A through wall crack-like defect was discovered in a boiler. Upon investigation the cause was determined to be localized flow-accelerated corrosion. | Yes |
| 2022-07-25 | 0 | 0 | A Loss of containment was reported due to a pinhole elbow on blowdown piping from a coker. The owner believes the pinhole to be a result of internal wall loss due to impingement from flow conditions. | Yes |
| 2022-07-21 | 0 | 0 | An unsafe condition was reported as a result of pressure piping being damaged by a hydrate slug. | No |
| 2022-07-21 | 0 | 0 | A pinhole resulted in a loss of containment from high pressure steam piping associated with a Heat Recovery Steam Generator (HRSG). The owner has determined the cause to be flow accelerated corrosion. | Yes |
| 2022-07-20 | 0 | 0 | Inlet piping to safety valve failed due to overpressure. The owner believes that the safety valve was inadequately supported. | Yes |
| 2022-07-19 | 0 | 0 | An unsafe condition was reported when a safety relief valve outlet was found to be blocked. The blockage was a result of the accumulation of process fluid due the valve passing. | No |
| 2022-07-19 | 0 | 0 | An unsafe condition was reported as a result of overpressure incident was reported due to an inadequate lock out procedure. | No |
| 2022-07-15 | 0 | 0 | A pinhole was found on a piping weld resulted a loss of containment. The owner believes this to be caused by internal corrosion. | Yes |
| 2022-07-13 | 0 | 0 | A loss of containment from an elbow in a piping system resulted from internal corrosion. | Yes |
| 2022-07-09 | 0 | 0 | Operations discovered tube leaks in a reboiler. The owner believes the cause to be corrosion. | Yes |
| 2022-07-07 | 0 | 0 | Loss of containment reported as a result of a loose flanged connection on a reboiler. The owner has determined the cause to be incorrect torque applied to flange bolting. | Yes |
| 2022-07-04 | 0 | 0 | During operation of a fired treater the firetube failed (through-wall crack), releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2022-06-30 | 0 | 0 | Operations discovered process fluid weeping from plugs installed on an air cooled hear exchanger. The owner believes the plugs to be leaking due to poor installation. | Yes |
| 2022-06-30 | 0 | 0 | Operations discovered a rupture in a 12-inch high pressure steam line that went undetected as the line was out of service. The owner believes was attributed to a freezing event detected until re-purging of the line. | Yes |
| 2022-06-27 | 0 | 0 | An unsafe condition was reported due to the discovery of not fully open block valve in the pressure relief path of a piping system. | No |
| 2022-06-27 | 0 | 0 | A pinhole leak was discovered at a nozzle weld on a pressure vessel. The Owner has attributed the cause to damaged coating and corrosion. | Yes |
| 2022-06-24 | 0 | 0 | A loss of containment was reported due to a socket weld pinhole at the isolation valve on a steam level column. The Owner believes the leak to be caused by a fabrication defect within the weld material. | Yes |
| 2022-06-22 | 0 | 0 | An unsafe condition was reported following the repair of a boiler. The hydrostatic test pressure was inadvertently increased beyond required pressure. The most likely cause is that the test procedure was not adhered to. The boiler is undergoing a fitnes | No |
| 2022-06-22 | 0 | 0 | Tube leaks reported from a horizontal reboiler. The Owner believes the leaks to be caused by corrosion. | Yes |
| 2022-06-20 | 0 | 0 | A leak was discovered from a weld on an oil treater firetube. The owner believes a welding defect to be the probable cause. | Yes |
| 2022-06-13 | 0 | 0 | An unsafe condition was reported due to an operator discovering a crack in a pipe fitting (threaded reducer) on compressor pressure gauge. No loss of containment reported. | Yes |
| 2022-06-07 | 0 | 0 | A loss of containment from a catalyst transfer line (long sweep elbow), resulted in a localized fire at the leak location. Owner believes the cause to be internal erosion from the catalyst. | Yes |
| 2022-06-06 | 0 | 0 | Following a shut down and during start-up, a leak was found in a Thermal Liquid Heating System. The Owner has determined this to be caused by thermal expansion causing resulting in a cracked tube. | Yes |
| 2022-06-02 | 0 | 0 | A Pinhole in a pressure piping system resulted in a loss of containment. The owner believes the cause to be a weld defect. | Yes |
| 2022-06-01 | 0 | 0 | An unsafe condition was reported due to a high pressure switch on a steam boiler was found to be tripping at higher levels than the set point. No loss of containment reported. | No |
| 2022-05-30 | 0 | 0 | A weld on a coupling failed causing the coupling & plug to detach from the vessel. The owner believes that the weld did not meet the correct joint design from original construction. | Yes |
| 2022-05-29 | 0 | 0 | A fire was reported as a result of a loss of containment. The source of the fluid was a pump discharge line. | Yes |
| 2022-05-27 | 0 | 0 | An operator found emulsion leaking from a pinhole of 3 inch tee in a piping system resulting in a loss of containment due to internal corrosion. | Yes |
| 2022-05-26 | 3 | 0 | An NPS 8 inch elbow on a steam outlet header ruptured, released steam which burned three workers (minor burns). The failure is believed to be associated with internal erosion/corrosion of the elbow. | Yes |
| 2022-05-24 | 0 | 0 | Hydrocarbon was released inside a compressor building resulting in a fire. The fire was contained in the compressor building and is believed to have been caused by the mechanical failure of a suction valve cap. | No |
| 2022-05-24 | 0 | 0 | After emptying a propane storage tank, the truck drove away with hoses still attached damaging the outlet nozzle of the pressure vessel. | Yes |
| 2022-05-20 | 0 | 0 | A leak from a flanged connection at a furnace outlet resulted in a small fire that did not cause any damage. The owner indicates the leak to have been a result of slight movement of the equipment during operation. | No |
| 2022-05-17 | 0 | 0 | Pinhole was discovered in a condensate line resulting in a loss of containment. The Owner believes the cause to be internal erosion and corrosion. | Yes |
| 2022-05-16 | 0 | 0 | Gasket on process side of treater failed causing release of oil. | Yes |
| 2022-05-13 | 0 | 0 | A firetube leak was discovered on a thermal fluid heater resulting in a loss of containment. The Owner believes that a poor quality weld repair resulted in the leak. | Yes |
| 2022-05-11 | 0 | 0 | A pinhole leak developed in the bottom head of a of an inlet separator due to internal corrosion. | Yes |
| 2022-05-06 | 0 | 0 | An air reciever was placed into service without a proper installation inspection and without a PSV. The Owner will address their installation practices. | No |
| 2022-05-04 | 1 | 0 | Worker received minor burns when blanket gas piping was being isolated with a blind. The remaining gas ignited due to the wrench work (hot work). | Yes |
| 2022-05-03 | 0 | 0 | An Operator found gas leaking from a pressure gauge associated with a piping system. Owner believes the cause of failure to be the plug on top of the gauge. | Yes |
| 2022-04-27 | 0 | 0 | Pinhole found in a 2||| ball valve resulting in a loss of containment. The Owner will re-evaluate the valve's suitability for the intended service. | Yes |
| 2022-04-26 | 0 | 0 | A pinhole was found in a 2||| propane line which resulted in a loss of containment. The Owner believes the cause to be corrosion under insulation (CUI). | Yes |
| 2022-04-25 | 0 | 0 | Operator observed smoke coming from a de-ethanizer vessel and proceeded to shut the unit down. Upon investigation it was determined that a through wall hole was in the process bundle allowing hydrocarbon to release and catch fire within the vessel. | Yes |
| 2022-04-23 | 0 | 0 | Boiler feedwater line ruptured resulting in boiler shutdown due to low water condition. The owner believes the feedwater line failed as a result of flow accelerated corrosion | Yes |
| 2022-04-22 | 0 | 0 | A threaded pipe nipple on a PSV inlet cracked resulting in a loss of containment. The owner believes the cause to be vibration induced fatigue. | Yes |
| 2022-04-22 | 0 | 0 | A test separator developed a leak from the bottom head. Owner has determined this to be corrosion developed as a result of the vessel not having a drain outlet. | Yes |
| 2022-04-18 | 0 | 0 | Loss of containment resulted from a frozen section of a piping system. The Owner has determined the probable causes to be inadequate insulation and corrosion under insulation (CUI). | Yes |
| 2022-04-16 | 0 | 0 | A leak was discovered from a tube bundle of a stabilizer reboiler. The leak was caused by pitting due to the process fluid and high operating temperatures. | Yes |
| 2022-04-15 | 0 | 0 | A crack on a 3/4 inch pipe nipple from a compressor bottle resulted in a loss of containment. Owner believes the cause of the crack to be fatigue from excessive vibration. | Yes |
| 2022-04-14 | 0 | 0 | An operator discovered a leak from the packing of a 2 inch ball valve allowing an unintentional release of emulsion fluid. The owner believes that the packing studs may have become loose due to vibration during service. | Yes |
| 2022-04-14 | 0 | 0 | Flange gasket leak resulted in a loss of containment. The Owner believes the cause to be improper installation of the gasket. | Yes |
| 2022-04-13 | 0 | 0 | A 2 inch line froze and resulted in a loss of containment. The Owner believes the probable cause to be inadequate maintenance practices to prepare system for cold weather. | Yes |
| 2022-04-13 | 0 | 0 | Piping split due to freezing. Owner believes the deadleg configuration to be the cause of the failure. | Yes |
| 2022-04-08 | 0 | 0 | An unsafe condition was reported when pressure equipment was returned to service following maintenance activities with a blind flange still installed on the inlet path of a PSV. The owner is reviewing the related procedures to ensure they are adequate. | No |
| 2022-04-07 | 0 | 0 | A pinhole leak was discovered on a condensate line. The Owner believes the probable cause of the leak to be internal erosion and corrosion of carbon steel piping. | Yes |
| 2022-04-06 | 0 | 0 | A stage 2 cooler had a crack on the inlet nozzle. The Owner suspects the crack to be caused by mechanical fatigue due to vibration. | Yes |
| 2022-04-01 | 0 | 0 | Pinhole leak discovered in dead leg nozzle of separator due to internal corrosion. | Yes |
| 2022-04-01 | 0 | 0 | Firetube on a Thermal Liquid Heater cracked leading to oil leaks and a fire. The Owner believes the leak was caused by mechanical fatigue due to thermal cycling. | Yes |
| 2022-03-31 | 0 | 0 | A thermowell was ejected from a tapped blind flange on a vessel and turned into a projectile and imbedded into a nearby plastic drum. The Owner believes the root cause of this accident to be inadequate pre-commissioning procedures/practices. | Yes |
| 2022-03-31 | 0 | 0 | A threaded nipple connected to a suction scrubber cracked leading to loss of containment. The Owner believes vibration induced fatigue to be the cause of the crack. | Yes |
| 2022-03-30 | 0 | 0 | Four boiler tubes failed due to overheating. The overheat condition was caused by heavy scaling due to a lack of appropriate water treatment. | Yes |
| 2022-03-30 | 1 | 0 | Release of hydrocarbon in a sample unit ignited and caused a fire. Owner believes the cause to be related to isolation procedures. | No |
| 2022-03-29 | 0 | 0 | A loss of containment was reported from a ball valve connected to a pressure vessel nozzle. The ball valve was passing which resulted in the leak. | Yes |
| 2022-03-28 | 0 | 0 | Steam leak on boiler gauge glass due to gasket failure. | Yes |
| 2022-03-28 | 0 | 0 | Frozen piping resulted in a loss of containment. The freezing was a result of inadequate maintenance practices. | Yes |
| 2022-03-28 | 0 | 0 | Frozen piping resulted in a loss of containment. The freezing was a result of inadequate maintenance practices. | Yes |
| 2022-03-28 | 0 | 0 | Frozen piping resulted in a loss of containment. The freezing was a result of inadequate maintenance practices. | Yes |
| 2022-03-28 | 0 | 0 | A fitting failed which resulted in a loss of containment. Owner suspects the main cause to be a localized corrosion due to temperature and the acidic environment. | Yes |
| 2022-03-28 | 0 | 0 | Frozen piping resulted in a loss of containment. The freezing was a result of inadequate maintenance practices. | Yes |
| 2022-03-28 | 0 | 0 | Routine operational rounds discovered a pressure boundary breach from a heat exchanger. The Owner suspects that poor installation of tuebsheet plugs as the primary cause. | Yes |
| 2022-03-28 | 0 | 0 | Freezing in a pressure piping system resulted in a loss of containment. The Owner has confirmed that the cause of freezing was due to the uninsulated section without heat tracing. | Yes |
| 2022-03-28 | 0 | 0 | Operations discovered a loss of containment from damaged piping. The Owner believes the damage to be a result of by a fabrication defects and fatigue due to vibration. | Yes |
| 2022-03-24 | 0 | 0 | Loss of containment from a 1.5 recirculation line. The Owner believes the cause to be a combination of welding defects from fabrication and excessive vibration during service. | Yes |
| 2022-03-24 | 0 | 0 | Operations reported a loss of containment from a reactor condensate return line which failed due to freezing. The freezing was a result of adequate heat tracing. | Yes |
| 2022-03-24 | 0 | 0 | An operator found a leak on a reactor manway flange. The Owner determined that the manway studs were not properly tightened which resulted in the gasket being dislodged. | Yes |
| 2022-03-23 | 0 | 0 | A loss of containment was reported due to a leak identified from a degasifier vessel. The owner believes that the coating on the carbon steel portion of the vessel failed allowing CO2 corrosion to occur. | Yes |
| 2022-03-23 | 0 | 0 | Operator found crack on a nozzle repad on a compressor bottle. Owner believes the cause to be excessive vibration. | Yes |
| 2022-03-22 | 0 | 0 | Leaks were found in 3 butt welds on the coils inside a heater. The Owner believes weld porosity to be the cause of the leaks. | Yes |
| 2022-03-21 | 0 | 0 | Pinhole leak in isolation valve discovered by operations. The pinhole was a result of internal corrosion. | Yes |
| 2022-03-21 | 0 | 0 | Operator discovered a leaking pipe spool on the elbow. The Owner believes the leak to be caused by internal corrosion. | Yes |
| 2022-03-21 | 0 | 0 | During the B31.3 hydrostatic test, a newly fabricated pipe spool failed and leaked along a suspected Electric Resistance Weld (ERW) seam. The piping fabricator had a Mill Test Report (MTR) indicating the pipe was |||hot finished seamless|||. | Yes |
| 2022-03-16 | 0 | 0 | Flexible hose ruptured due to overpressure resulting in a release of propane. The Owner believes the shutdown device did not engage due to malfunction of controls. | Yes |
| 2022-03-14 | 0 | 0 | Ammonia discovered on the brine side of a refrigeration plant at a recreational facility. A tube leak in the systems chiller is believed to be the cause. The system was shut down for repair or replacement. | Yes |
| 2022-03-11 | 0 | 0 | Pinhole leak in air-cooled heat exchanger tube due to corrosion. | Yes |
| 2022-03-10 | 0 | 0 | Malfunctioning electrical heat tracing resulted in the failure of a steam trap due to freezing. | Yes |
| 2022-03-07 | 0 | 0 | A failure in a pressure piping system resulted in a loss of containment due to freezing. The section of piping froze due to non-operational heat tracing. | Yes |
| 2022-03-04 | 0 | 0 | A through-wall hole was identified on pressure piping resulted in a loss of containment. The owner believes the hole was a result of erosion. | Yes |
| 2022-03-04 | 0 | 0 | Malfunctioning electrical heat tracing resulted the failure of a steam trap due to freezing. | Yes |
| 2022-03-04 | 0 | 0 | A through-wall hole was identified on pressure piping resulted in a loss of containment. The owner believes the hole was a result of erosion. | Yes |
| 2022-03-03 | 0 | 0 | Failure of an elbow in a gas condensate return line resulted in a loss of containment. The owner has identified the failure to be internal corrosion due to the fluid service. | Yes |
| 2022-03-02 | 0 | 0 | Vibration of a compressor package resulted in a cracked nozzle on a scrubber. | Yes |
| 2022-03-02 | 0 | 0 | A fire occurred in the boiler room of a gas-fired boiler as a result an unintentional release of propane. Propane was being used as a temporary fuel source and workers had been troubleshooting unstable combustion. | Yes |
| 2022-02-28 | 0 | 0 | Tubes reported to be leaking in a reboiler due to pitting. The owner indicates that the cause of the pitting is sour product, salt and other deposits, creating a corrosive sludge in the condensate system. | Yes |
| 2022-02-24 | 0 | 0 | Piping leak due to accumulated corrosion in deadleg. | Yes |
| 2022-02-22 | 0 | 0 | Tube failure in a hydrogen reformer furnace. The owner believes that the high temperature service resulted in creep like damage to the tube. | Yes |
| 2022-02-18 | 0 | 0 | Steam leak on boiler flange caused by improper torquing practices. | Yes |
| 2022-02-18 | 0 | 0 | Piping leak associated with pitting and corrosion. | Yes |
| 2022-02-18 | 0 | 0 | Frozen tube and internal corrosion to in an air cooled heat exchanger resulted in a loss of containment. | Yes |
| 2022-02-16 | 0 | 0 | Boiler feedwater piping failure at elbow due to service erosion. | Yes |
| 2022-02-15 | 0 | 0 | Through wall crack in a boiler feedwater (BFW) preheater. Owner has determined the cause to be carbonate stress corrosion cracking(SCC)caused by corrosion under insulation (CUI). | Yes |
| 2022-02-15 | 0 | 0 | Gasket leak between the channel cover and channel shell of a heat exchanger. The owner has determined that the sealing surface of the channel head cover had signs of steam cutting which would have contributed to damaging the gasket. | Yes |
| 2022-02-15 | 0 | 0 | Loss of containment due to tube leak on air cooled heat exchanger. | Yes |
| 2022-02-14 | 0 | 0 | Tube leaks on a reboiler due to corrosive sludge. | No |
| 2022-02-11 | 0 | 0 | Loss of containment reported due to freezing. The freezing is attributed to electrical heat tracing failure. | Yes |
| 2022-02-10 | 0 | 0 | Gauge glass failure on start-up of a Heat Recovery Steam Generator (HRSG). The owner determined that the gauge glass was not intended for operating pressure, it was only designed for initial boil out operation. | Yes |
| 2022-02-10 | 0 | 0 | Air cooled heat exchanger tube leak due to freezing. | Yes |
| 2022-02-10 | 0 | 0 | Pinhole leak was found in an elbow on a section of dead leg piping. | Yes |
| 2022-02-10 | 0 | 0 | An unsafe condition was reported due to combustion air being restricted resulting in a trip and subsequent heater shutdown. | No |
| 2022-02-09 | 0 | 0 | Small leak on firetube exhaust stack on an indirect fired heater. | Yes |
| 2022-02-09 | 0 | 0 | A leak on a 2 inch tee was found on a pressure piping system. The cause is under investigation by the owner. | Yes |
| 2022-02-08 | 0 | 0 | Frozen condinsate piping due to lack of flow. | Yes |
| 2022-02-07 | 0 | 0 | Frozen pipe failure due to extreme weather. Identified as process water (non-expansible service). | Yes |
| 2022-02-07 | 0 | 0 | Loss of containment on steam piping due to erosion. | Yes |
| 2022-02-06 | 0 | 0 | Failure of electrical heat tracing resulted in pressure piping being frozen. | No |
| 2022-02-05 | 0 | 0 | Heat exchanger frozen due to process upset and heat tracing was not installed. | Yes |
| 2022-02-04 | 0 | 0 | Pin hole leak in vessel nozzle. | Yes |
| 2022-02-03 | 0 | 0 | Failure of warm up piping between a Heat Recovery Steam Generator (HRSG) and pressurized blowdown line. The owner has determined that the leak was a result of erosion. | Yes |
| 2022-02-03 | 0 | 0 | Firetube failure in a heater due to a through wall crack at the location of a previous repair. The owner has determined that the previous repair was not conducted correctly. | Yes |
| 2022-02-02 | 0 | 0 | Fire at facility caused by oil leak from compressor engine. | |
| 2022-02-01 | 0 | 0 | Loss of containment resulting from a gasket failure on a firetube. | Yes |
| 2022-01-31 | 0 | 0 | Heat exchanger gasket failure resulted in a loss of containment. | Yes |
| 2022-01-31 | 0 | 0 | Pinhole leak in condensate line due to internal corrosion. | Yes |
| 2022-01-31 | 0 | 0 | Condensate/steam leaking out of the body of an inlet valve. | Yes |
| 2022-01-31 | 0 | 0 | Leak in low pressure feeder vent line from a welded connection. | Yes |
| 2022-01-31 | 0 | 0 | Pinhole and localized thinning identified on steam piping resulted in a loss of containment. | Yes |
| 2022-01-31 | 0 | 0 | Pinhole leak from a condensate line. | Yes |
| 2022-01-31 | 0 | 0 | Boiler tube failure due to high temperature corrosion. | Yes |
| 2022-01-28 | 0 | 0 | Pin hole leak reported from the bottom of an air receiver. | Yes |
| 2022-01-28 | 0 | 0 | Loss of containment reported from the steam jacket of a pressure piping system. The owner indicates that the steam jacket was internally pitted. | Yes |
| 2022-01-28 | 0 | 0 | Pressure piping leak detected at a threaded connection. The owner has identified the cause as Corrosion Under Insulation (CUI). | Yes |
| 2022-01-28 | 0 | 0 | Leak from flanged connection in a pressure piping system vent line. The owner has determined that the leak occurred due to misalignment of the flanged connection. | Yes |
| 2022-01-26 | 0 | 0 | Fire resulted from loss of containment on threaded piping. The loss of containment is attributed to vibration. | Yes |
| 2022-01-25 | 0 | 0 | Loss of containment reported from a pressure piping system due to freezing. | Yes |
| 2022-01-24 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | Yes |
| 2022-01-24 | 0 | 0 | Packing failure on the gauge glass of a waste heat boiler resulted in a leak. | Yes |
| 2022-01-20 | 0 | 0 | Loss of containment from a heat exchanger due to frozen tubes. The owner believes that the source of undetected water in the exchanger was undrained steam condensation. | Yes |
| 2022-01-19 | 0 | 0 | A vertical glycol seperator was subjected a pressure exceeding its maxamum allowable working pressure (MAWP). The owner has determined the cause of the overpressure was a frozen pressure relief discharge line. | No |
| 2022-01-18 | 0 | 0 | Piping failure on a steam line due to erosion. | Yes |
| 2022-01-17 | 0 | 0 | Frozen pressure piping resulted in a loss of containment. The frozen piping was a result of faulty electrical heat tracing. | Yes |
| 2022-01-17 | 0 | 0 | An air leak from a drain valve on instrument air tubing was discovered. The owner has determined that the leak was a result of a through wall crack in the body of the valve due to accumulated condensation inside the valve which subsequently froze. | Yes |
| 2022-01-14 | 0 | 0 | Loss of containment due to a sight glass failure on a boiler. | Yes |
| 2022-01-14 | 0 | 0 | Pressure piping leak at a flanged joint. The owner has determined that the leak was a result of the due to the installation of an incorrect gasket. | Yes |
| 2022-01-13 | 0 | 0 | Pin hole leak in vessel nozzle. | Yes |
| 2022-01-13 | 0 | 0 | Heat Exchanger tube failure due to freezing. | Yes |
| 2022-01-12 | 0 | 0 | Freezing caused a pressure piping line to split in two locations resulting a release of steam. | Yes |
| 2022-01-10 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | No |
| 2022-01-08 | 0 | 0 | Piping failure at an elbow location due to internal erosion. | Yes |
| 2022-01-08 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | No |
| 2022-01-07 | 0 | 0 | Failure of tubes and tubesheet resulted in a loss of containment from a heating boiler. The failures were a result of excessive scale buildup in the boiler. | Yes |
| 2022-01-05 | 0 | 0 | Loss of containment on a 3/4 inch steam bypass line. | Yes |
| 2022-01-04 | 0 | 0 | Loss of containment reported due to failed tube on superheater section. Tube failure is attributed to localized overheating. | Yes |
| 2022-01-04 | 0 | 0 | Pressure piping failure as a result of freezing. The freezing is attributed to a dead-leg in the piping system. | Yes |
| 2022-01-03 | 0 | 0 | Crack on weld of compressor piping due to vibration service. | Yes |
| 2022-01-03 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | Yes |
| 2022-01-03 | 0 | 0 | Tubing leaks identified due to general corrosion. | Yes |
| 2022-01-03 | 0 | 0 | Loss of containment on boiler feed water(BFW) due to corrosion under insulation(CUI). | Yes |
| 2021-12-31 | 0 | 0 | Pressure piping found to be frozen due to inadequate insulation and lack of heat tracing. | No |
| 2021-12-30 | 0 | 0 | Loss of containment reported as result of a through wall crack on lower 2 inch level gage nozzle and vessel shell on a evaporator distilate tank. | Yes |
| 2021-12-30 | 0 | 0 | Heat Exchanger tube failure due to freezing. | Yes |
| 2021-12-29 | 0 | 0 | Loss of heat in building resulted in piping and boiler freezing. | Yes |
| 2021-12-26 | 0 | 0 | A leak from a flanged connection resulted in a subsequent fire. | Yes |
| 2021-12-21 | 0 | 0 | A crack on the weldneck of a piping flange was found by operations. The owner indicates the cause to be vibration induced fatigue. | Yes |
| 2021-12-21 | 0 | 0 | Flow induced erosion caused a failure in an elbow in a pressure piping system. | Yes |
| 2021-12-18 | 0 | 0 | Frozen pressure piping due to faulty electrical heat tracing. | Yes |
| 2021-12-18 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | Yes |
| 2021-12-14 | 0 | 0 | A valve failed on a steam warm up line due to freezing. The freezing was caused by a lack of sufficient insulation and failed heat tracing. | Yes |
| 2021-12-12 | 0 | 0 | A pressure piping line froze and split due to extreme cold weather. | Yes |
| 2021-12-10 | 0 | 0 | Operational issue with fluid caused plate heat exchanger to freeze up. | Yes |
| 2021-12-10 | 0 | 0 | Operational issue with fluid caused plate heat exchanger to freeze. | Yes |
| 2021-12-06 | 0 | 0 | Aerial cooler tube leak caused by freezing. | Yes |
| 2021-12-06 | 0 | 0 | Steam leak from heater coils at fillet welds. Fillet welds were found to have fabrication defects. | Yes |
| 2021-12-05 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | No |
| 2021-12-04 | 0 | 0 | Incorrect use of lock-out procedure resulted in release of process fluid. | Yes |
| 2021-12-03 | 0 | 0 | Nozzle weld failure due to fabrication defects and excessive service vibration. | Yes |
| 2021-12-01 | 0 | 0 | Overheating of product resulted in a fire causing exterior damage to a reboiler. | Yes |
| 2021-11-25 | 0 | 0 | Frozen pressure piping line due to faulty electrical heat tracing. | No |
| 2021-11-25 | 0 | 0 | Heat exchanger flange gasket leak. | |
| 2021-11-19 | 0 | 0 | Several tubes failed in a heat exchanger as result of freezing due to inadequalty drained water following maintenance activities. | Yes |
| 2021-11-18 | 0 | 0 | A leak of emulsion was discovered from a test header due to a pinhole leak resulting from internal corrsion. | Yes |
| 2021-11-15 | 0 | 0 | Loss of containment due to check valve failure caused by valve material not suitable for service. | Yes |
| 2021-11-11 | 0 | 0 | Manway gasket on a boiler was leaking. The root cause is related to the installation of the gaskets and torquing practices. | Yes |
| 2021-11-09 | 0 | 0 | A tube failed on a fired heater due to localized overheating. | Yes |
| 2021-11-08 | 0 | 0 | Loss of containment reported from a separator water level control valve. The leak was caused by a pinhole as a result of internal erosion damage. | Yes |
| 2021-11-01 | 0 | 0 | A process piping system leaked due to corrosion under insulation (CUI). | Yes |
| 2021-10-25 | 0 | 0 | A check valve in a process piping system failed due to internal corrosion resulting in a loss of containment. | Yes |
| 2021-10-23 | 0 | 0 | A heat exchanger at a processing facility was damaged by fire that orgininated in atomospheric srorage tanks. | No |
| 2021-10-17 | 0 | 0 | A leak from a pressure piping system was caused by a pinhole leak due to preferential corrsion at a weld. | Yes |
| 2021-10-01 | 0 | 0 | Inadequate heat tacing and dead leg resulted in freezing of some pipe. | Yes |
| 2021-09-30 | 0 | 0 | During startup after routine maintenance, process fluid leaked from a flanged connection and autoignited. There were no injuries or collateral damage. | Yes |
| 2021-09-24 | 0 | 0 | Process fluid leaked from a flanged connection and auto-ignited. There were no injuries or collateral damaged. | Yes |
| 2021-09-20 | 0 | 0 | During turnaround preparations a leak developed at a flanged connection on a vessel. The leaked hydrocarbons ignited resulting in a fire damaging piping and other equipment. | No |
| 2021-09-16 | 0 | 0 | A pinhole leak developed in a process vessel at an area with high residual welding stress. | Yes |
| 2021-09-08 | 0 | 0 | Operation discovered a leak from a reboiler at a process facility. The leak was the result of internal corrosion. | Yes |
| 2021-08-24 | 0 | 0 | A sectional boiler at a process facility was damaged due to a fire in the boiler room as a result of a malfunctioning burner management system. | No |
| 2021-08-19 | 0 | 0 | Leak in blow down line discovered due to corrosion. | Yes |
| 2021-08-19 | 0 | 0 | A small crack was discovered on the transition section of the transfer line of an ethane cracking furnace. The crack was determined to be the result of creep damage. | Yes |
| 2021-08-19 | 0 | 0 | A leak was discovered from a 30 inch light hydrocarbon pressure piping inlet line to compressor. The leak was a result of corrosion under insulation. | |
| 2021-08-14 | 0 | 0 | Pinhole leak discovered on a nozzle of a process vessel. The pinhole was a result of external corrosion. | Yes |
| 2021-08-03 | 0 | 0 | A loss of containment was discovered from a compressor bottle. The leak was determined to be a result of a crack at a nozzle weld on the compressor bottle. | Yes |
| 2021-08-03 | 1 | 0 | A worker was removing a manway cover. Hydrocarbon vapour leaked out, ignited and burned the worker. | No |
| 2021-07-28 | 0 | 0 | Leak discovered by operations from an air cooled heat exchanger. The leak was a result of internal corrosion. | Yes |
| 2021-07-27 | 0 | 0 | A leak was discovered at a flange connection in a pressure piping system. The leak was a result of the gasket being installed incorrectly. | Yes |
| 2021-07-23 | 0 | 0 | Ammonia leak detected from a section of pressure piping. The leak was determined to be the result of internal corrosion. | Yes |
| 2021-07-14 | 0 | 0 | A fire destroyed two seperator packages at a hydrocarbon facility. The fire was a result of a vehicle accident nearby. | No |
| 2021-07-10 | 1 | 0 | During decommissioning of wellsite, liquid overflowed from a flare stack resulting in a fire that injured a worker and damaged a pressure vessel. | No |
| 2021-07-07 | 0 | 0 | Fire in a compressor building resulted in damage to pressure equipment. The fire was a result of faulty wiring. | No |
| 2021-06-28 | 0 | 0 | Process fluid leaked onto hot catalyst resulting in an internal fire which damaged the pressure vessels. | Yes |
| 2021-06-22 | 0 | 0 | A fire was reported at a heat medium heater as a result of a cracked firetube which allowed oil to leak and ignite. | |
| 2021-06-10 | 0 | 0 | The bellows failed in a low water cutoff on a steam boiler causing the boiler to trip. | Yes |
| 2021-06-07 | 0 | 0 | A NPS 8 to NPS 4 reducer in a boiler feedwater system failed due to flow assisted corrosion. | Yes |
| 2021-06-06 | 1 | 0 | A worker disassembling a piping system was burned by contact from hot steam condensate. | Yes |
| 2021-06-04 | 0 | 0 | Operations discovered a leak from the throttle and trip valve of a sulphuric acid steam turbine. The leak was cause by an improper seal between the body and bonnet of the valve. | Yes |
| 2021-05-26 | 0 | 0 | Failure of refractory at the burner end of a boiler firetube resulted in short circuiting of flue gas which caused damage to the boiler tubes and tubesheet. | No |
| 2021-04-28 | 0 | 0 | Pinhole leak discovered in a boiler tube due to internal corrosion. | Yes |
| 2021-04-26 | 0 | 0 | Pinhole leak discovered from a three inch tee in a piping system. The pinhole was a result of corrosion due to internal coating failure. | Yes |
| 2021-04-26 | 0 | 0 | A crack in the firetube in a free-water knock out vessel resulted in a leak. | Yes |
| 2021-04-16 | 0 | 0 | Pinhole leak discovered on the drain line of an amine reboiler. The pinhole was a result of corrosion. | Yes |
| 2021-04-09 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing caused by inadequate electrical heat tracing. | Yes |
| 2021-04-08 | 0 | 0 | A fire in material handling equipment resulted in damage to several pressure coils. | No |
| 2021-04-07 | 0 | 0 | A crack was discovered at a nozzle to shell weld of a compressor bottle. The crack was caused by fatigue due to vibration service and lack of a repad. | Yes |
| 2021-04-07 | 0 | 0 | Loss of containment reported from pressure piping due to a failure caused by freezing. The freezing was a result of inadequate heat tracing. | Yes |
| 2021-04-07 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing caused by inadequate electrical heat tracing. | Yes |
| 2021-04-03 | 0 | 0 | A fire occurred during truck loading at an oil lease site. The fire was caused by static discharge ingniting oil that had leaked from the loading system. | No |
| 2021-03-30 | 0 | 0 | A Crack was discovered at a weld in compressor piping. The crack was believed to be a result of fatigue from vibration in service. | Yes |
| 2021-03-29 | 0 | 0 | Operator discovered a leak on a boiler feed water piping. The leak was a result of a pinhole caused by internal corrosion. | Yes |
| 2021-03-19 | 0 | 0 | Steam heating boiler tube leak reported. The leak was a result of internal corrosion due to inadequate water treatment. | Yes |
| 2021-03-12 | 0 | 0 | Operations determined process gas was leaking into the jacket of a steam-jacketed vessel. | Yes |
| 2021-03-12 | 0 | 0 | Operator on morning rounds noticed the sample cooler (coil) on a boiler leaking. The sample cooler was isolated and maintenance was notified to replace the cooler. | Yes |
| 2021-03-10 | 0 | 0 | Pinhole discovered in a steam line due to internal corrosion. | Yes |
| 2021-03-10 | 0 | 0 | Loss of containment reported from a process piping system due to a cracked attachment weld. The crack was a result of fatigue caused by continuous vibration during service. | Yes |
| 2021-03-10 | 0 | 0 | Creep damage caused deformation of a tube in a fired process heater. A crack developed at the deformation resulting in loss of containment. | Yes |
| 2021-03-04 | 0 | 0 | A freeze rupture occurred at a 3/4 NPS branch connection off a 150 psi steam header. | Yes |
| 2021-03-03 | 0 | 0 | While attempting to thaw a frozen drain line from a fuel gas scrubber a fire started and was extinguished without further incident. | No |
| 2021-02-26 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of localized internal erosion from the process fluid flow. | Yes |
| 2021-02-25 | 0 | 0 | Loss of containment reported from a separator drain nozzle due to through wall internal corrosion. | Yes |
| 2021-02-24 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing caused by electrical heat tracing malfunction. | Yes |
| 2021-02-23 | 0 | 0 | Pinhole leak discovered from the drain piping of a separator. The pinhole was a result of internal corrosion. | Yes |
| 2021-02-22 | 0 | 0 | A loss of containment was reported from a Natural Gas Liquid (NGL) process piping system due to the failure of a threaded pipe nipple connection. The failure was a result of fatigue due to vibration during service. | Yes |
| 2021-02-21 | 0 | 0 | Operators observed loss of level in glycol heat exchanger. System was shut down. Fluid loss from tube was contained in the shell. | Yes |
| 2021-02-21 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing caused by electrical heat tracing malfunction. | Yes |
| 2021-02-21 | 0 | 0 | An operator was plant walk through to issue a hot work permit and noticed a sour gas odor. On investigation a leak due to external corrosion was found at a nameplate attachment. | Yes |
| 2021-02-20 | 0 | 0 | Loss of containment reported from a threaded connection on a process piping system. The leak from the connection was a result of improper installation. | Yes |
| 2021-02-20 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing caused by electrical heat tracing malfunction. | Yes |
| 2021-02-19 | 0 | 0 | Loss of containment reported due to the failure of a section of process piping. The failure was a result of freezing due to inadequately insulated piping. | Yes |
| 2021-02-18 | 0 | 0 | Small boiler supplying steam to an autoclave failed due to overheating and corrosion. | Yes |
| 2021-02-16 | 0 | 0 | Operations discovered a leak from a pinhole in a process piping line. The pinhole was a result of internal corrosion. | Yes |
| 2021-02-09 | 0 | 0 | Failure of a heat exchanger tube as a result of freezing. | Yes |
| 2021-02-08 | 0 | 0 | A leak was discovered in compressor suction piping. The leak was determined to be the result of fatigue due to vibration service. | Yes |
| 2021-02-05 | 0 | 0 | Failure of an oil treater firetube allowed hydrocarbon to enter the tube subsequently ignited, resulting in a fire. | Yes |
| 2021-02-03 | 0 | 0 | A leak was discovered on a steam line due to a pinhole leak. | Yes |
| 2021-02-02 | 0 | 0 | Operators discovered a process piping rupture due to freezing. The freezing was a result of improper isolation of the piping which allowed water into the line. | Yes |
| 2021-01-20 | 0 | 0 | A loss of containment was reported due to tubes failing on an air cooled heat exchanger. The tube failure was located at a weld and is believed to be the result of vibration. | Yes |
| 2021-01-20 | 0 | 0 | Loss of containment reported from a process piping system. The leak was determined to be the result of thermal fatigue at a weld due to temperature cycling of the product stream. | Yes |
| 2021-01-19 | 0 | 0 | Loss of containment reported from several intermediate superheater tubes in a recovery boiler at a pulp mill. The tube failures were attributed to fatigue due to constant swaying of the superheater platens during operation. | Yes |
| 2021-01-19 | 0 | 0 | Glycol heating boiler tube leak reported due to external corrosion. | Yes |
| 2021-01-15 | 0 | 0 | A leak was discovered on the nozzle to shell weld of hydrogen cooler. The leak was determined to be the result of chloride stress corrosion cracking. | Yes |
| 2021-01-08 | 0 | 0 | Ammonia leak reported from a heat exchanger at a refrigeration plant. The leak was the result of an exchanger tube failure due to corrosion. | Yes |
| 2021-01-07 | 0 | 0 | An economizer tube bend was found to be leaking due to cracks. The cause was determined to be the result of stress corrosion cracking. | Yes |
| 2021-01-06 | 0 | 0 | Operations discovered a leak at a steam isolation valve. Upon investigation it was determined the leak was from the bonnet to body connection due to inadequate bolting. | Yes |
| 2021-01-06 | 1 | 0 | While conducting maintenance work, a contractor suffered burns to the hands while draining the boiler. | No |
| 2020-12-30 | 0 | 0 | Several boiler tubes were reported to have failed due to low water condition. The low water condition was undetected as a result of a malfunctioning sight glass. | Yes |
| 2020-12-23 | 0 | 0 | A leak was discovered on the shell of a heat exchanger due to internal corrsion. | Yes |
| 2020-12-21 | 0 | 0 | Operations discovered a temporary steam hose had ruptured. The hose is believed to have previously sustained undetected damage that resulted in the subsequent failure. | Yes |
| 2020-12-17 | 0 | 0 | Ammonia leak discovered at an ice plant. The leak was determined to be the result of a cracked gasket on a flanged piping connection from the compressor. | Yes |
| 2020-12-17 | 0 | 0 | During maintenance, a boiler tube in a heating boiler froze and split due to a cold backdraft through the chimney stack. | Yes |
| 2020-12-03 | 0 | 0 | A heating boiler leaked due to a crack in the boiler drum. | Yes |
| 2020-12-02 | 0 | 0 | A leak in a compressor building was discovered due to a through wall crack at a piping butt weld. The crack was a result of fatigue due to vibration during service. | Yes |
| 2020-12-01 | 0 | 0 | A firetube in an oil treater failed due to localized overheating resulting in a loss of containment. | Yes |
| 2020-11-30 | 0 | 0 | Re-use of gasket resulted in a leak at a handhole on a power boiler. | Yes |
| 2020-11-28 | 0 | 0 | Operators discovered a process fluid leak at the inlet to a pressure vessel. The leak was determined to be a result of through wall erosion related to the process flow. | Yes |
| 2020-11-28 | 0 | 0 | A leak was discovered from an elbow on high pressure steam piping. The leak was determined to be the result of internal erosion. | Yes |
| 2020-11-20 | 0 | 0 | A pinhole leak was discovered in the furnace of a thermal liquid heating system. | Yes |
| 2020-11-13 | 0 | 0 | Boiler tube failure due to low water condition at a power plant. | Yes |
| 2020-11-13 | 0 | 0 | Operations discovered feezing in a steam trap and associatted piping. The freezing did not result in a loss of containment and was caused by failure of the heat tracing. | No |
| 2020-11-09 | 0 | 0 | A pinhole leak was discovered in the sidewall header of a large heating boiler. The pinhole was a result of internal corrosion. | Yes |
| 2020-11-06 | 0 | 0 | A leak was discovered at a crack in a steam line. The crack was a result of thermal fatigue. | Yes |
| 2020-11-06 | 0 | 0 | Operations discovered a steam leak from a flanged connection on a steam pipeline. The leak was determined to be the result of improper installation of the flange gasket. | Yes |
| 2020-10-31 | 0 | 0 | A natural gas leak was discovered in a compressor buidling. The leak was from a cracked relief valve body caused by fatigue from vibration during service. | Yes |
| 2020-10-29 | 0 | 0 | A fire was caused by a leak at a dissimilar metal weld in a steam methane reformer furnace tube. | Yes |
| 2020-10-28 | 0 | 0 | A heat exhanger was shut down after observed process fluid collecting on the ground below a shell and tube heat exchanger. The leak was from a through-wall crack that orignated at a baffle in the channel head. | Yes |
| 2020-10-26 | 0 | 0 | A pinhole was discovered in a socket weld on the drain line of a remote level indicator. The pinhole is suspected to be the result of a manufacturing defect. | Yes |
| 2020-10-26 | 0 | 0 | Failure of a section of 0.5 inch process piping from the discharge of a drain booster pump resulted in a loss of containment. The failure was a result of fatigue cracking from excessive vibration during service. | Yes |
| 2020-10-24 | 0 | 0 | Pinhole leak was discovered in the steam jacket of a sulphur drain pot. The pinhole was a result of corrosion. | Yes |
| 2020-10-22 | 0 | 0 | Operators discovered a pinhole leak from a on a 2 inch process piping line at a flange to pipe weld. The pinhole was due to internal corrosion. | Yes |
| 2020-10-22 | 0 | 0 | Operations personnel discovered leaking produced water from the transfer piping that conveys water from the separator vessel to the storage/disposal tank at a well head. The leak was a result of internal corrosion. | Yes |
| 2020-10-16 | 0 | 0 | Operators discovered a leak from a 3 inch bypass valve at a Steam Assisted Gravity Drainage (SAGD) facility. The leak was due to a pinhole in the valve body. | Yes |
| 2020-10-16 | 0 | 0 | A crack at an inlet nozzle of a heat exchanger resulted in a small fire in a chemical processing facility. The crack is believed to be the result of creep induced damage. | Yes |
| 2020-10-09 | 0 | 0 | Operators discovered a leak from a pipe nipple on the upper shell of a glycol contactor. The leak was caused by a through wall crack in the threads of the nipple due to vibration during service. | Yes |
| 2020-10-03 | 0 | 0 | A steam leak was discovered from a 16 inch valve. The leak was caused by corrosion and other service related conditions. | Yes |
| 2020-10-02 | 0 | 0 | During operation of a fired heater the firetube failed at the tube to tubesheet weld releasing hydrocarbon and resulting in a fire. | Yes |
| 2020-10-02 | 0 | 0 | A fire was caused by a leak at a dissimilar metal weld in a steam methane reformer furnace tube. | Yes |
| 2020-10-01 | 0 | 0 | A steam leak was discovered at a flanged connection. The leak was caused by the installation of an improper gasket. | Yes |
| 2020-09-28 | 0 | 0 | Operators responded to a H2S alarm at a produced water pumping station, and discovered a leak from the bottom head of a water filter that was in operation. The leak was a result of internal corrosion due to breach of the internal coating. | Yes |
| 2020-09-25 | 0 | 0 | A fire underneath an heat exchanger at a sour gas processing facility was reported. The fire resulted from a leaking drain valve which allowed excess hydrocarbon to accumulate in the spill containment receptacle. | Yes |
| 2020-09-23 | 0 | 0 | A pinhole leak was discovered on propane inlet piping to a process chiller. The pinhole is believed to be a result of external damage due to corrosion under insulation. | Yes |
| 2020-09-21 | 0 | 0 | Operations discovered a leak from underneath the insulation of a process piping system. The leak is believed to be caused by internal corrosion associated with the process. | Yes |
| 2020-09-18 | 0 | 0 | Leak discovered in the bottom cone of a sand separator vessel. The leak was a result of localized internal wall thinning due to erosion. | Yes |
| 2020-09-16 | 0 | 0 | A pinhole leak was discovered on a process piping system. Pinhole was a result of internal corrosion. | Yes |
| 2020-09-04 | 0 | 0 | A leak was discovered from a compressor discharge bottle. The leak was a result of a through wall crack, due to vibration, on the inlet nozzle repad to shell weld. | Yes |
| 2020-09-04 | 0 | 0 | High pressure boiler feedwater was unintentionally released due to the failure of the graphite packing in a 6 inch gate valve. | Yes |
| 2020-09-03 | 0 | 0 | A Pinhole leak discovered in the drain line of a sour service separator due to corrosion. | Yes |
| 2020-09-01 | 0 | 0 | A block valve packing failure resulted in a loss of containment of liquid nitrogen at a tank offloading station. The valve packing failed due to a lack of regular maintenance. | Yes |
| 2020-09-01 | 0 | 0 | A gasket failure on the gage glass of a carbon monoxide (CO) boiler drum resulted in a loss of containment. | Yes |
| 2020-09-01 | 0 | 0 | A pinhole leak was discovered in a check valve of a process piping system. The pinhole was a result of internal corrosion. | Yes |
| 2020-09-01 | 0 | 0 | A gasket failure at a pressure control valve on a process piping system resulted in a loss of containment of natural gas. | Yes |
| 2020-08-26 | 0 | 0 | A pinhole leak was discovered in a light naphtha piping system. The pinhole was a result of internal corrosion. | Yes |
| 2020-08-21 | 0 | 0 | A pinhole leak was discovered in a 2 inch condensate piping elbow. The pinhole was due to internal corrosion and erosion. | Yes |
| 2020-08-21 | 1 | 0 | An operator was burned by a flash fire while bleeding hydrocarbon condensate into a pail. | No |
| 2020-08-21 | 0 | 0 | A leak was discovered from an interstage scrubber in a compressor building. The leak was a result of a cracked pipe nipple on the drain of the sight glass, due to vibration and over torqueing of the pipe nipple during installation. | Yes |
| 2020-08-20 | 0 | 0 | Operators discovered a leak from a nozzle on a process vessel due to internal corrosion. | Yes |
| 2020-08-20 | 0 | 0 | A loss of containment was reported from a hot oil heater due to localized overheating causing several tubes to fail. | Yes |
| 2020-08-17 | 0 | 0 | Operators discovered a leak from an instrument air receiver. The leak was a result of a through wall crack, due to vibration, at the weld of a support leg. | Yes |
| 2020-08-13 | 0 | 0 | Operators discovered a leak at a process gas exchanger nozzle weld. The leak was a result of cracking due to suspected vibration during service. | Yes |
| 2020-08-12 | 0 | 0 | Overpressure of process piping caused a loss of containment from several bolted connections. The overpressure condition was due to a passing block valve which resulted in an inability to isolate the pressure source during maintenance. | Yes |
| 2020-08-07 | 0 | 0 | An explosion in a compressor building and subsequent fire resulted from the failure of a braided hose connection allowing hydrocarbon to leak. | Yes |
| 2020-08-06 | 0 | 0 | An operator discovered a leak from an air dryer during routine rounds. The leak was a result of continuous vibration while the dryer was in operation. | Yes |
| 2020-08-05 | 0 | 0 | Erosion inside the nozzle of a process vessel resulted in a loss of containment. | Yes |
| 2020-08-05 | 0 | 0 | A through wall crack in the threads of a pipe nipple beneath the second stage discharge safety valve resulted in a loss of containment in a compressor package building. The crack was a result of fatigue due to excessive vibration during operation. | Yes |
| 2020-08-04 | 0 | 0 | A firetube in an oil treater failed due to localized overheating resulting in a fire. | Yes |
| 2020-08-01 | 0 | 0 | Operators discovered a leak at a process gas exchanger nozzle weld. The leak was a result of cracking due to suspected vibration during service. | No |
| 2020-07-27 | 0 | 0 | An operator discovered a pinhole leak on the bottom head of a process vessel. The pinhole was a result of internal corrosion. | Yes |
| 2020-07-23 | 0 | 0 | A leak at a weld on a boiler was discovered during operator rounds. The leak was determined to be a result of thermal fatigue. | Yes |
| 2020-07-20 | 0 | 0 | Steam outlet piping from a depropanizer oil coalescer vessel was discovered to have ruptured. It is unknown when this failure occurred as the line is used infrequently, but the owner suspects it was a result of freezing. | Yes |
| 2020-07-15 | 0 | 0 | Operators discovered a hydrogen sulphide leak from a compressor discharge bottle. Upon investigation it was determined that a nozzle had cracked at the weld to shell joint due to excessive vibration. | Yes |
| 2020-06-29 | 0 | 0 | A leak from a Low Water Cut-off (LWCO) valve caused a high pressure boiler to shut down. The leak was caused by a cracked bellow inside the LWCO valve. | Yes |
| 2020-06-22 | 0 | 0 | A loss of containment was reported due to a crack in the threaded area of a fitting attached to a recycle valve on a compressor package. The crack was a result of fatigue due to excessive vibration during operation. | Yes |
| 2020-06-18 | 0 | 0 | Leak discovered at the weld neck of the inlet flange of an aerial cooler. The leak was a result of a small crack that had formed due to continuous vibratory service. | Yes |
| 2020-06-15 | 0 | 0 | Pinhole leak discovered in a socket weld of piping attached to float column in an acid gas compressor package. | Yes |
| 2020-06-10 | 0 | 0 | Operator discovered a steam leak from the vent line of a heater at a pulp mill. The leak was caused by a crack in the vent line as a result of fatigue from vibration service. | Yes |
| 2020-06-10 | 0 | 0 | Loss of containment reported due to a failed steam hose at the coupling. Investigation revealed that the hose material had become brittle due to age and constant usage. | Yes |
| 2020-06-04 | 0 | 0 | Operators discovered a leak from a compressor discharge bottle due to a crack located at the toe of a nozzle to shell weld. The crack was a result of fatigue due to vibration service. | Yes |
| 2020-06-02 | 0 | 0 | A through wall crack was discovered in a nozzle of a stainless steel vessel. The owner believes the crack was a result of fatigue due to vibration. | Yes |
| 2020-06-01 | 0 | 0 | Operations detected a steam leak from a boiler drum manway gasket. The owner believes the leak resulted from misalignment of the manway door which prevented the gasket from sealing as intended. | Yes |
| 2020-05-25 | 0 | 0 | Pinhole leak discovered on compressor piping due to corrosion. | Yes |
| 2020-05-25 | 0 | 0 | Excess water not drained from a process piping system froze causing the flanged connections to leak and permanently deform the piping. The water in the system was allowed to freeze due to a failure of the building's heating system. | Yes |
| 2020-05-21 | 0 | 0 | Pinhole leak discovered in the economizer drain line piping of a recovery boiler. | Yes |
| 2020-05-20 | 0 | 0 | A loss of containment was reported from an internally coated process filter vessel due to internal corrosion. It was determined that cracking in the coating allowed process fluid to contact the vessel wall and cause the corrosion. | Yes |
| 2020-05-19 | 0 | 0 | Pinhole leak discovered on an air cooled heat exchanger due to corrosion. | Yes |
| 2020-05-12 | 0 | 0 | A process heater coil exceeded its design temperatures due to a deviation from operating procedure. | No |
| 2020-05-08 | 0 | 0 | A leak was discovered from a fluidized bed boiler. The leak was determined to be caused by a cracked attachment weld due to fatigue. | Yes |
| 2020-05-05 | 0 | 0 | Operators discovered a process water leak at a flanged connection on a piping system. The leak was determined to have been caused by loosening of the flange bolts due to water hammer. | Yes |
| 2020-04-29 | 0 | 0 | Steam tracing piping failed due to corrosion. | Yes |
| 2020-04-23 | 0 | 0 | Pinhole leak discovered in a 3/4 inch drain nozzle as a result of corrosion. | Yes |
| 2020-04-21 | 0 | 0 | Weld defect in an ammonia refrigeration heat exchanger coil resulted in a release. | Yes |
| 2020-04-17 | 0 | 0 | A steam leak from a weld was discovered in a steam coil associated with an emulsion cooler. The leak is believed to have resulted from a manufacturing defect during welding. | Yes |
| 2020-04-15 | 0 | 0 | Pinhole leak discovered on weld of Boiler External Piping. The pinhole is believed to be the result of a manufacturing defect. | Yes |
| 2020-04-15 | 0 | 0 | Through wall crack discovered on coke drum as a result of cyclic thermal fatigue. | Yes |
| 2020-04-14 | 0 | 0 | Pinhole leak discovered in a 4 inch piping spool containing crude oil caused by erosion. | Yes |
| 2020-04-13 | 0 | 0 | Pipe nipple connected to ball valve failed due to vibration and misalignment causing a release of hydrocarbon and subsequent fire in the compressor building. | Yes |
| 2020-04-10 | 0 | 0 | Failure of steam trap piping due to freezing. The freezing was a result of failed heat tracing. | Yes |
| 2020-04-09 | 0 | 0 | Failed fuel gas pressure regulator vented gas which combusted. | No |
| 2020-04-08 | 0 | 0 | A nitrogen hose burst from overpressure after being inadvertently left connected to a process vessel resulting in a release of sour gas. | Yes |
| 2020-04-08 | 0 | 0 | Loss of containment of hydrocarbon from 2 inch branch connection of process piping. Cause determined to be stress corrosion cracking (SCC). | Yes |
| 2020-04-07 | 0 | 0 | Unintentional release of hydrocarbon due to corroded vent valve on flare header. | Yes |
| 2020-04-07 | 0 | 0 | Corrosion in the oil side of a cooler resulted in release of oil. | Yes |
| 2020-04-06 | 0 | 0 | Corrosion of a pipe nipple in a leach unit resulted in a loss of containment. The material used for the pipe nipple was incorrect and not suitable for the intended service. | Yes |
| 2020-04-04 | 0 | 0 | Ruptured tube on an aerial cooler resulting in a hydrocarbon leak. The tube failure was due to freezing. | Yes |
| 2020-04-03 | 0 | 0 | Release of refirgerant due to fretting of a braided hose against the compressor piping. | Yes |
| 2020-04-01 | 0 | 0 | Through wall crack discovered on 1 inch piping to a pressure gauge on the water makeup system. Water hammer is believed to be the most probable cause. | Yes |
| 2020-04-01 | 0 | 0 | Operators discovered a tube leak on the superheater in a recovery boiler. The owner believes the leak was due to fatigue as a result of repeated movement of the superheater platens. | Yes |
| 2020-03-30 | 0 | 0 | Isolated pressure piping line found frozen as a result of the heat tracing not activated. No loss of containment. | No |
| 2020-03-30 | 0 | 0 | Pinhole leak discovered in process piping due to corrosion. | Yes |
| 2020-03-29 | 0 | 0 | Gasket failure in a bolted connection on a process vessel led to a loss of containment. | Yes |
| 2020-03-29 | 0 | 0 | Valve failure discovered in piping system. The failure is believed to have been caused by fatigue due to excessive vibration. | Yes |
| 2020-03-26 | 0 | 0 | Process piping line failure discovered due to freezing. The freezing was caused by heat tracing failure. | Yes |
| 2020-03-25 | 0 | 0 | Failure of gasket and packing resulted in a loss of containment from the level gauge of a steam flash drum. | Yes |
| 2020-03-25 | 0 | 0 | A suspected leak on the fuel gas supply piping resulted in a fire in the compressor building. | Yes |
| 2020-03-23 | 0 | 0 | Steam piping to deaerator failed due to freezing. The freezing was a result of unusually cold ambient temperatures. | Yes |
| 2020-03-20 | 0 | 0 | A flame was discovered from an inadequately bolted connection to a process vessel. | Yes |
| 2020-03-19 | 0 | 0 | Pinhole leak discovered on an elbow between the steam trap and blowdown tank due to erosion. | Yes |
| 2020-03-18 | 0 | 0 | Tube failure on an air cooled heat exchanger. The failure was a result of mechanical damage due to hydrates in the system. | Yes |
| 2020-03-18 | 0 | 0 | An air cooled heat exchanger overpressured during purging due to the vent line valve being closed. No loss of containment. | No |
| 2020-03-18 | 0 | 0 | Valve stem packing failure resulting in a release of hydrocarbon. | Yes |
| 2020-03-17 | 0 | 0 | Boiler tube leak as a result of under-deposit corrosion. | Yes |
| 2020-03-16 | 3 | 0 | During maintenance on a process piping system, an unintentional release of naphtha and hydrocarbon resulted in a fire. The release was caused by a deviation from maintenance procedures. | Yes |
| 2020-03-12 | 0 | 0 | Failure of drain piping from particle filter due to freezing. The freezing was a result of failure of the heat tracing. | No |
| 2020-03-11 | 0 | 0 | Following maintenance activities, process fluid was reintroduced to the tube side of a heat exchanger, but the shell side was still blocked in, causing pressure build up in the shell side until the outlet valve lost containment at its inlet flange. | Yes |
| 2020-03-11 | 0 | 0 | Pinhole leak discovered on a water drain line from an oil treater. | Yes |
| 2020-03-09 | 0 | 0 | Incorrectly assembled drain tubing on a fuel gas scrubber leaked gas resulting in a fire. | Yes |
| 2020-03-09 | 0 | 0 | A firetube in an oil treater failed due to localized overheating. | Yes |
| 2020-03-08 | 0 | 0 | A process high temperature excursion resulted in loosening of a flanged joint, allowing flammable process fluid to leak resulting in a fire. | Yes |
| 2020-03-04 | 0 | 0 | Pinhole leak discovered in weld on the return elbow of an economizer. | Yes |
| 2020-03-04 | 0 | 0 | Brittle weld failure on a steam line due to incorrect material used in piping modifications which took place in 2006. | Yes |
| 2020-03-04 | 0 | 0 | Compressor package overpressured due to blocked in pressure relief device. | No |
| 2020-03-03 | 0 | 0 | Excess scale caused localized overheating leading to failure on the fire tube of a free water knockout vessel. | Yes |
| 2020-03-03 | 0 | 0 | Ammonia leak reported due to a gasket failure. | Yes |
| 2020-03-02 | 0 | 0 | Instument tubing failure due to fatigue resulted in a fire. | Yes |
| 2020-03-02 | 0 | 0 | Through wall crack discovered on coke drum as a result of cyclic thermal fatigue. | Yes |
| 2020-03-02 | 0 | 0 | Freezing of process fluid in a piping associated with the humidification system of a furnace resulted in a failure and release of humidified ethane. | Yes |
| 2020-03-01 | 0 | 0 | A firetube in an oil treater failed due to localized overheating resulting in a fire. | Yes |
| 2020-02-29 | 0 | 0 | Failure of steam coil due to freezing. The freezing was a result of failed heat tracing. | Yes |
| 2020-02-29 | 0 | 0 | Loss of containment due to damaged lining resulting in corrosion in sulfuric acid piping. | Yes |
| 2020-02-28 | 0 | 0 | Pinhole leak discovered in an economizer tube resulting in a loss of containment. | Yes |
| 2020-02-27 | 0 | 0 | Freezing damage caused to an air cooled heat exchanger due to failed heat tracing. The heat exchanger was damaged beyond repair and will be replaced. | No |
| 2020-02-26 | 0 | 0 | An operator heard a gas leak from the cooler. The compressor was immediately shut down to isolate the leak. After a further inspection by the owner a pin-hole was found on one tube. | Yes |
| 2020-02-25 | 0 | 0 | A failed pipe nipple resulted in an ammonia leak in a refrigeration plant. The pipe nipple is believed to have had an existing defect in the threaded portion resulting in eventual failure. | Yes |
| 2020-02-25 | 0 | 0 | Tube failure in an air cooled heat exchanger resulted in a loss of containment. Flow accelerated corrosion (FAC) is believed to be the probable cause. | Yes |
| 2020-02-25 | 0 | 0 | Failure of a steam line as a result of freezing. In adequate draining of the line allowed the remaining condensate to freeze. | Yes |
| 2020-02-24 | 0 | 0 | Isolation valve passing liquid into steam piping and subsequently freezing causing the pipe to fail. | Yes |
| 2020-02-23 | 0 | 0 | Freezing failure of a piping elbow due to an abandoned dead leg. | Yes |
| 2020-02-21 | 0 | 0 | Pinhole leak discovered in produced water piping. Owner suspects bacterial corrosion to be a likely cause. | Yes |
| 2020-02-21 | 0 | 0 | Through wall crack discovered on well injector steam line check valve, due to freezing. Freezing was a result of the steam isolation valve passing and allowing condensation to form in the check valve. | Yes |
| 2020-02-20 | 0 | 0 | Loss of containment due to pinhole and crack in emulsion inlet piping during warmup and preparation. System had been sitting stagnant for over four years prior to startup. | Yes |
| 2020-02-20 | 0 | 0 | Loss of containment at flange gasket on process vessel due to incorrect bolt tightening. | Yes |
| 2020-02-19 | 0 | 0 | Boiler feed water piping system overpressured. No damage apparent or loss of containment. | No |
| 2020-02-18 | 0 | 0 | Pinhole leak discovered in 90° elbow of drain pipe on a separator. | Yes |
| 2020-02-18 | 0 | 0 | Loose restraint caused contact and wear on tubes resulting in vapor/steam observed from an inspection access door. | Yes |
| 2020-02-10 | 0 | 0 | Loss of containment at weld on process line connecting to a vessel. Owner determined that the loss of containment was a result of a crack caused by fatigue. | Yes |
| 2020-02-04 | 0 | 0 | Freezing of water line due to failed heat tracing. | Yes |
| 2020-02-04 | 0 | 0 | Boiler feed water low flow bypass piping spool developed a leak due to erosion. | Yes |
| 2020-02-03 | 0 | 0 | Several tubes on aerial cooler failed due to freezing while cooler was out of service. | Yes |
| 2020-02-02 | 0 | 0 | Loss of containment due to weld failure at return bend of economizer. | Yes |
| 2020-01-30 | 0 | 0 | A leak was discovered in a high pressure steam piping system. The pipe was found to have a through wall crack as the result of service induced deterioration. | Yes |
| 2020-01-30 | 0 | 0 | Hot spot discovered in a methane reformer furnace tube. No loss of containment, tube repaired. | No |
| 2020-01-29 | 0 | 0 | Freezing at dead leg of condensate return line due to insufficient heat tracing. | Yes |
| 2020-01-27 | 0 | 0 | Loss of containment due to pinhole on catalyst transfer line. Pinhole was determined to be a result of damaged refractory that resulted in localized erosion. | Yes |
| 2020-01-24 | 0 | 0 | Boiler feed water blowdown piping failed due to freezing. The freezing was a result of extreme cold ambient conditions. | Yes |
| 2020-01-23 | 0 | 0 | Pinhole leak in discharge elbow of process vessel due to localized wall thining. | Yes |
| 2020-01-22 | 0 | 0 | Operators observed smoke and steam vapor issuing from a pressure vessel. Upon further inspection, a through wall crack approximately 30 inch long was found at a circumferential weld. | Yes |
| 2020-01-22 | 0 | 0 | A tube bundle was removed from a heat exchanger for inspection and maintenance. The bundle was fouled with a substance that caught upon initial removal. | No |
| 2020-01-22 | 0 | 0 | A pair of air cooled heat exchangers were found to have several split tubes due to freezing. The exchangers were in intermittent service and the owner has determined that they were not isolated correctly. | Yes |
| 2020-01-22 | 0 | 0 | Pipe nipple failure due to a combination of vibration and cold temperatures resulted in a release of propane to atmosphere. | Yes |
| 2020-01-21 | 0 | 0 | Liquids accumulated in a compressed gas cooler the tube and froze causing the tube to fail. | Yes |
| 2020-01-21 | 0 | 0 | Mobile compressor package destroyed due to fire. The owner believes that the cause of the fire may have been as a result of cracked exhaust pipe inside the compressor trailer. | Yes |
| 2020-01-21 | 0 | 0 | Liquids accumulated in a compressed gas cooler the tube and froze causing the tube to fail. | Yes |
| 2020-01-20 | 0 | 0 | Operators discovered a small steam leak under the insulation at a pressure vessel nozzle. It was determined that internal erosion resulted in a breach of the pressure envelope. | Yes |
| 2020-01-20 | 0 | 0 | Freezing of water line from inlet separator due to failed heat tracing. | Yes |
| 2020-01-18 | 0 | 0 | Process upset due to failure of rotating equipment resulted in excess liquid and pressure in the system. The fluid released by the PSV contained excess liquid, which accumulated and ignited. | Yes |
| 2020-01-18 | 0 | 0 | Freezing of steam trap due to failed heat tracing. | No |
| 2020-01-18 | 0 | 0 | Leaking valve due to failed bonnet gasket. The owner suspects a previously undetected freezing event was the most probable cause. | Yes |
| 2020-01-18 | 0 | 0 | Freezing of pressure piping line to flow meter due to failed heat tracing. | No |
| 2020-01-16 | 0 | 0 | Truck hit an oil supply line causing loss of containment. | Yes |
| 2020-01-16 | 1 | 0 | Operator burned with hot water while draining a filter pot. Second degree burns required hospitalization and surgery. | Yes |
| 2020-01-16 | 0 | 0 | Pressure vessel sight glass gasket failed resulting in significant fluid loss. Emergency procedures were initiated to contain leak without further damage. | Yes |
| 2020-01-15 | 0 | 0 | Ammonia leak reported at a load out station. Leak determined be the result of gasket failure at a flanged piping connection. | Yes |
| 2020-01-14 | 0 | 0 | Freezing of slurry inlet line due to failed heat tracing. | No |
| 2020-01-12 | 0 | 0 | Leak on process piping due to wall thinning as a result of unanticipated in-service corrosion. | Yes |
| 2020-01-11 | 0 | 0 | Loss of containment from pinhole at the socket weld connecting a globe valve to steam supply line. The pinhole is believed to be caused by steam erosion. | Yes |
| 2020-01-11 | 0 | 0 | The discharge piping of a safety valve was found to be frozen. The freezing was a result of a small ammount of water unintentionally passing through the safety valve. | No |
| 2020-01-10 | 0 | 0 | Freezing of a froth condensate drain line caused a gasket failure resulting in a loss of containment. The freezing was caused by failure of heat tracing. | Yes |
| 2020-01-07 | 0 | 0 | Through wall crack in air receiver resulted in a loss of containment. The crack appears to have initiated at a saddle support weld and propagated into the shell material, most likely as a result of vibration service. | Yes |
| 2020-01-07 | 0 | 0 | A pinhole leak was discovered on the bridle to inlet separator as a result of a high LEL alarm. The pinhole is believed to be caused by microbial corrosion. | Yes |
| 2020-01-06 | 0 | 0 | A pinhole leak was discovered on a piping system. The pinhole was attributed to corrosion. | Yes |
| 2020-01-03 | 0 | 0 | Nipple at inlet of PSV leaking from a crack in the threads. Crack believed to be a result of vibration due to broken discharge piping support. | Yes |
| 2020-01-03 | 0 | 0 | Unplanned plant shutdown, due to power outage, caused freezing in piping and exchangers. | No |
| 2019-12-24 | 0 | 0 | A steam leak was detected on a blowdown line. The leak is believed to be due to corrosion. | Yes |
| 2019-12-24 | 0 | 0 | A PSV was found to be unintentionally venting, as a result of a failed lifting spring. | Yes |
| 2019-12-20 | 0 | 0 | During inspection, a total of 13 heating boilers were found to be operating without functional low water cut offs. | No |
| 2019-12-19 | 0 | 0 | A compressor safely shut down after Lower Explosive Limits (LEL) were detected in a compressor building. Cracking was discovered at a thread-o-let and is believed to be fatigue induced from vibration of the piping. | Yes |
| 2019-12-19 | 0 | 0 | Operations noticed abnormal level fluctuations in pressure vessels. Investigation found the associated piping to have failed as a result of freezing. | Yes |
| 2019-12-18 | 0 | 0 | After a planned outage, the economizer tubes on a boiler were found to be leaking during start up. The cause of the leaking tubes was found to be freeze damage, as the economizer was not fully drained when the boiler was taken offline. | Yes |
| 2019-12-12 | 0 | 0 | After repair, a valve was put back into service and placed under pressure. A nipple on the valve failed and was propelled through an adjacent wall. | Yes |
| 2019-12-11 | 0 | 0 | A solvent outlet line was found to be frozen, due to failed heat tracing. | No |
| 2019-12-07 | 0 | 0 | The piping on a high temperature separator failed, allowing process fluid to escape and then ignite, causing a fire. The cause of the leak is believed to be internal corrosion/erosion. | Yes |
| 2019-12-05 | 0 | 0 | A plugged exchanger tube was found to be leaking due to a missing plug gasket. | Yes |
| 2019-12-04 | 0 | 0 | A portion of boiler feedwater piping (on the pump suction side) was overpressured, due to an error in operation. | No |
| 2019-12-02 | 0 | 0 | Frozen piping was discovered on the de-superheater water line inlet to a steam turbine generator. | No |
| 2019-11-28 | 0 | 0 | Underground piping was found to be leaking. The cause of the failure was attributed to corrosion under insulation. | Yes |
| 2019-11-27 | 0 | 0 | A pressure piping system experienced 3 separate failures due to freezing. Failure of the electric heat tracing is believed to be the cause. | Yes |
| 2019-11-27 | 0 | 0 | A high pressure steam boiler was found to be leaking feedwater. The cause of the leak was determined to be a failed gasket. | Yes |
| 2019-11-26 | 0 | 0 | A heating boiler was shut down because of a low limit alarm. Upon investigation a number of boiler tubes were found to have failed, most likely due to corrosion from inadequate water treatment. | Yes |
| 2019-11-25 | 0 | 0 | A thermowell on an autoclave failed, allowing ammonia to escape. The failure is believed to be caused by a thinned thermowell wall, brought on by erosion. | Yes |
| 2019-11-19 | 0 | 0 | Ammonia was discovered to be leaking from the top of a plate heat exchanger in a refrigeration plant. It was determined a gasket failure was the cause of the leak. | Yes |
| 2019-11-13 | 0 | 0 | A flange on an isolation valve was found to be leaking during normal operation. The line was isolated and depressurized, and the leak corrected by tightening the bolting on the flange. | Yes |
| 2019-11-13 | 0 | 0 | An air cooled heat exchanger tube failed due to the freezing of residual internal fluid left behind during maintenance work. | Yes |
| 2019-11-12 | 0 | 0 | Condensate piping failed as a result of corrosion in the line. | Yes |
| 2019-11-12 | 0 | 0 | A fire initiated at the top of a coke drum. The cause of the fire was undetermined. | No |
| 2019-11-12 | 0 | 0 | An operator noticed fluid dripping from the channel head of a heat exchanger. | Yes |
| 2019-11-12 | 0 | 0 | A section of 1 inch piping was damaged from rubbing on the compressor structure. Upon investigation a clamp was found to be broken, most likely from vibration. | No |
| 2019-11-11 | 0 | 0 | A pinhole in the piping to an air cooled heat exchanger was discovered. The cause of the pinhole was identified as corrosion. | Yes |
| 2019-11-06 | 0 | 0 | One of the tubes on an aerial cooler froze and ruptured, due to colder than anticipated temperatures. | Yes |
| 2019-11-04 | 0 | 0 | An operator noticed steam leaking from a 4 inch elbow on the outlet piping on a power boiler. Inadequate water treatment is believed to be the root cause. | Yes |
| 2019-11-04 | 0 | 0 | A pinhole leak was found on a water level control valve in a separator building. The pinhole is suspected to have been caused by sand erosion. | Yes |
| 2019-10-31 | 0 | 0 | The feed nozzle of a reactor vessel cracked at the weld, releasing process fluid. It is suspected that improper gusseting led to the cracking. | Yes |
| 2019-10-25 | 0 | 0 | An ammonia gas leak was discovered on a section of 8 inch piping. The root cause is believed to be corrosion under insulation. | Yes |
| 2019-10-24 | 0 | 0 | Two nozzles on two different compressor bottles cracked, allowing process fluid to escape. The cracks were attributed to mechanical failure of the compressor, which caused it to move violently. | Yes |
| 2019-10-11 | 0 | 0 | Steam was found to be leaking at a flanged connection. The flange was found to have pitting on the ring mating surface and the early stages of a steam cut. | Yes |
| 2019-10-08 | 0 | 0 | A 2 inch elbow on the inlet to a blowdown drum was found to be leaking. The cause of failure is believed to be steam/condensate erosion. | Yes |
| 2019-10-07 | 0 | 0 | During rounds, operators found process fluid to be leaking from a pressure vessel. Upon investigation the cause was attributed to corrosion under insulation. | Yes |
| 2019-10-03 | 0 | 0 | Steam was found to be leaking from a flanged connection in a piping system. The line was inspected and a pinhole leak was found in the weld metal connecting the flange to the piping. | Yes |
| 2019-10-01 | 0 | 0 | A pinhole leak was discovered coming from a |||tee||| on the steam side of the low water cut-off column of a power boiler. | Yes |
| 2019-10-01 | 0 | 0 | A power boiler was found to be leaking at the tube-to-tubesheet welds. It's believed this was due to thermal cycling of the boiler. | Yes |
| 2019-10-01 | 0 | 0 | Steam was found to be leaking from the gauge glass column of a power boiler. Vibration is suspected to be the cause of the leak. | Yes |
| 2019-10-01 | 0 | 0 | Steam was found to be leaking from the orifice flange on a boiler feedwater line. | Yes |
| 2019-09-30 | 0 | 0 | A watertube was found to be leaking in a hot water heating boiler. | Yes |
| 2019-09-27 | 0 | 0 | Vibration caused a pressure indicator to unscrew, resulting in a release of gas which in turn ignited. | Yes |
| 2019-09-26 | 0 | 0 | An instrument air line on a hydrogen compressor was found to be leaking. The air line is believed to have cracked from compressor vibration. | Yes |
| 2019-09-24 | 0 | 0 | Cracked welds were discovered on the drain nozzle of a compressor bottle. | Yes |
| 2019-09-23 | 0 | 0 | A process train was overpressured due to a process excursion and blocked-in PSV. Loss of containment occurred due to gasket failure. | Yes |
| 2019-09-23 | 0 | 0 | A through wall crack was discovered at the firetube-to-tubesheet weld of a power boiler. | Yes |
| 2019-09-23 | 0 | 0 | An operator noticed steam venting from the level glass on a power boiler. Upon inspection, the level glass was found to be cracked. | Yes |
| 2019-09-20 | 0 | 0 | A heat exchanger was found to be leaking. Upon investigation, the source of the leak was determined to be a faulty gasket. | Yes |
| 2019-09-04 | 0 | 0 | A 2 inch fuel gas piping line was found to be leaking due to external corrosion. | Yes |
| 2019-09-04 | 0 | 0 | During maintenance, a small fire started in a vessel. The fire is believed to have been caused by iron sulphides (in scale) reacting with oxygen. | No |
| 2019-09-03 | 0 | 0 | Pinhole leak in Thermal Fluid Heater coil caused furnace to trip on an over temperature condition. It was concluded that external abrasion between refractory and the tube caused the leak. | Yes |
| 2019-08-27 | 0 | 0 | Process fluid was found to be leaking from the weep hole of a manway repad on a pressure vessel. | Yes |
| 2019-08-22 | 0 | 0 | A pump seal failure caused an ammonia leak at a food processing facility. | Yes |
| 2019-08-06 | 0 | 0 | An H2S alarm and compressor shutdown was caused by a cracked nipple from the second stage scrubber of the compressor. The cracked nipple was found to be a result of fatigue due to vibration. | Yes |
| 2019-08-06 | 0 | 0 | A pinhole was found on the flange weld of a separator. The internal coating had failed, causing preferential corrosion at that particular location. | Yes |
| 2019-08-06 | 0 | 0 | A through wall crack was discovered on a vessel at a 24 inch nozzle weld. The crack was a result of fatigue due to vibration. | Yes |
| 2019-07-30 | 0 | 0 | During routine operation a leak was detected on a 4||| boiler feedwater line. Upon investigation the piping was found to have been subjected to corrosion under insulation. | Yes |
| 2019-07-24 | 4 | 0 | During a planned outage, workers were removing the blind flange on a waste heat boiler when they were sprayed with hot boiler feedwater. | Yes |
| 2019-07-19 | 0 | 0 | During routine rounds, operators detected a leak in the economizer of a boiler. Investigation revealed a tube had failed, most likely due to fatigue. | Yes |
| 2019-07-17 | 0 | 0 | A compression fitting connection failed due to improper installation, resulting in a loss of process fluid. The fitting was not tightened to the manufacturer's specifications, resulting in insufficient crimping of the tubing. | Yes |
| 2019-07-16 | 0 | 0 | A pin hole leak was found on the condensate dump valve of an inlet separator. Sand erosion is believed to be the cause of the pin hole. | Yes |
| 2019-07-15 | 0 | 0 | The gasket on the inlet nozzle of a pressure vessel failed, allowing process gas to escape. The gas ignited after coming into contact with welding that was being performed in the vicinity. | Yes |
| 2019-07-09 | 0 | 0 | During operation the bellows on a PSV was found to be leaking. | Yes |
| 2019-07-09 | 0 | 0 | During plant start-up a blowdown header overpressured causing water hammer to occur. The water hammer caused a 3/4||| drain valve assembly to break. | Yes |
| 2019-07-09 | 0 | 0 | A crack was found in a connection weld on a coker. The crack is believed to have been caused by a high stress concentration at that location. | Yes |
| 2019-07-04 | 0 | 0 | A loss of containment was reported due to the failure of a 3/4 inch to 1/4 inch swage reducer in a transmitter line. The failure was located in the threaded area of the swage and was determined to be caused by vibration related fatigue. | Yes |
| 2019-07-02 | 1 | 0 | An operator was sprayed in the face with process fluid after turning a valve that was under pressure. | No |
| 2019-07-01 | 0 | 0 | A 2 inch elbow drain off an 8 inch truck load line failed due to external corrosion (elbow in soil). | Yes |
| 2019-07-01 | 0 | 0 | Oil was found leaking into the firetube of a fired treater. The treater was safely shut down, with no further consequences. | Yes |
| 2019-06-28 | 0 | 0 | An elbow in an acid piping system failed due to corrosion. Dew point corrosion is suspected, as Sulphur was known to be in the line causing corrosive acid to form. | Yes |
| 2019-06-24 | 0 | 0 | A gas leak caused Low Explosive Limit (LEL) detectors to shut down a booster compressor unit. The cause of the leak was found to be a through wall crack on the inlet of a safety valve. | Yes |
| 2019-06-24 | 0 | 0 | An operator discovered a leak below a discharge bottle in a compressor building. The leak was due to a cracked drain nipple on the discharge piping. | Yes |
| 2019-06-24 | 0 | 0 | Operators discovered a pinhole leak on an oil emulsion pressure piping line. Pinhole was found be caused by Corrosion Under Insulation (CUI). | Yes |
| 2019-06-21 | 0 | 0 | During startup of a process system, a pressure piping system failed in a dead-leg. | Yes |
| 2019-06-19 | 0 | 0 | Operators discovered a leak underneath a separator. The leak was due a pinhole in the bottom head of the vessel. | Yes |
| 2019-06-13 | 0 | 0 | During planned maintenance activities, materials inside a vessel were exposed to air, resulting in an exothermic reaction. | Yes |
| 2019-06-10 | 0 | 0 | A sandblast tank overpressured causing the manway cover to fail, launching it through a building roof. Upon investigation the safety relief valve was found to be wired shut. | Yes |
| 2019-06-04 | 0 | 0 | An employee failed to completely depressurize a sandblast tank before attempting to open the lid. The lid swung open, denting the vessel. | No |
| 2019-06-03 | 0 | 0 | A piping flange connection was found to be misaligned, allowing process gas to escape. The piping system was shut down without incident. | Yes |
| 2019-06-03 | 0 | 0 | A cracked 1 inch nipple was found leaking process fluid in a piping system, which was shut down without incident. | Yes |
| 2019-05-23 | 0 | 0 | Operators noticed low suction pressure on a compressor. Upon investigation several heat exchanger tubes were found to have failed due to corrosion. | Yes |
| 2019-05-21 | 0 | 0 | A high pressure steam boiler was found leaking water from three failed watertubes. The failure is believed to be due to corrosion of the tubes. | Yes |
| 2019-05-13 | 0 | 0 | Process fluid was found to be leaking from an elbow on a piping system. The elbow failed due to erosion. | Yes |
| 2019-05-06 | 0 | 0 | The firetube in a treater failed, allowing process fluid to escape. The fluid ignited, causing a fire which damaged the treater. | Yes |
| 2019-05-02 | 0 | 0 | A line heater was overfilled, which caused a loss of containment. The process fluid then ignited, causing a fire. | Yes |
| 2019-05-01 | 0 | 0 | An insulated process piping line was found to be leaking gas. Once the insulation was removed, the piping was found to be excessively corroded externally. | Yes |
| 2019-05-01 | 0 | 0 | A pinhole leak was found on the downcomer pipe between a reboiler and an accumulator. The equipment was shut down without incident. | Yes |
| 2019-04-25 | 0 | 0 | The gasket on an emulsion treater failed, allowing process fluid to escape. The facility was shut down and the gasket replaced. | Yes |
| 2019-04-17 | 0 | 0 | The weld on a steam header branch connection failed, allowing steam to escape. | Yes |
| 2019-04-17 | 0 | 0 | Process fluid was found to be leaking from a cracked nipple on a vortex scrubber. | Yes |
| 2019-04-17 | 0 | 0 | Several leaks were found throughout a process piping system. It was found that an unanticipated change to the corrosion inhibitor system resulted in an accelerated corrosion rate. | Yes |
| 2019-04-17 | 0 | 0 | The main gas valve on a high pressure steam valve failed open, allowing gas to accumulate. Upon start-up the accumulated gas ignited, causing an explosion. | No |
| 2019-04-16 | 0 | 0 | A power outage in a process plant caused the flow of thermal oil to stop. Power was restored, creating a water hammer condition which damaged the pressure vessel. | Yes |
| 2019-04-15 | 0 | 0 | A fire heater tube ruptured, causing a fire which damaged surrounding equipment. | Yes |
| 2019-04-15 | 0 | 0 | A waterwall tube in a high pressure hot water boiler developed a leak. Upon investigation, a casing attachment weld was found to have failed. | Yes |
| 2019-04-08 | 0 | 0 | During rounds, an operator noticed gas escaping from a nozzle weld on a third stage suction scrubber. The vessel was safely shut down and repaired. | Yes |
| 2019-04-08 | 0 | 0 | A cracked nipple was found on the bleed line from a compressor to flare. The line was shut down and the nipple repaired. | Yes |
| 2019-04-01 | 0 | 0 | The threaded inlet of a safety valve failed on a compressor skid, allowing gas to escape. | Yes |
| 2019-03-29 | 0 | 0 | Flammable material was inadvertently left in a pressure vessel used for heat treating products at a high temperature. The material ignited, causing a fire. | No |
| 2019-03-28 | 0 | 0 | A leak was discovered at the inlet nozzle of a pressure vessel. The leaking process fluid came into contact with hot piping and ignited, causing a fire. | Yes |
| 2019-03-26 | 0 | 0 | A pinhole leak was discovered in the union connecting the pressure gauge to the steam drum of a high pressure steam boiler. | Yes |
| 2019-03-22 | 0 | 0 | An atmospheric tank overfilled with glycol. The glycol came in contact with a nearby burner, igniting and causing a fire. | Yes |
| 2019-03-14 | 0 | 0 | A gasket leak in an ammonia refrigeration system in the mechanical room at an arena triggered an alarm which resulted in evacuation of the facility. | Yes |
| 2019-03-14 | 0 | 0 | An operator noticed steam coming from a line in a pipe rack. The plant was shut down and upon investigation the leak was determined to be caused by freeze damage to boiler feedwater line. | Yes |
| 2019-03-14 | 0 | 0 | In the process of restarting a primary separation facility that had been out of service for several months, the operator discovered a fuel gas scrubber leaking from freeze damage. | Yes |
| 2019-03-13 | 0 | 0 | Water was left in a shutdown process piping system and froze causing the pipe to split. When the process fluid was re-introduced a leak was discovered. | Yes |
| 2019-03-10 | 0 | 0 | An operator noticed steam leaking from a pipe and on investigation found a 2 inch long crack in the pipe. A passing block valve had allowed condensate to accumulate in an unheated portion of piping the condensate froze resulting in the pipe splitting. | Yes |
| 2019-03-09 | 0 | 0 | Failure of heat tracing resulted in two areas of splitting on a steam line due to freezing. | Yes |
| 2019-03-07 | 0 | 0 | Failure of heat tracing resulted in a drain line valve splitting due to freezing. | Yes |
| 2019-03-07 | 0 | 0 | Cast iron sectional steam heating boiler overheated due to a low water condition and failed. | Yes |
| 2019-03-04 | 0 | 0 | A power boiler safety valve was discharging as a result of an emergency shutdown of the boiler. The piping supports failed resulting in the vent piping being launched causing damage to nearby structures. Fortunately no injuries were sustained. | No |
| 2019-03-03 | 0 | 0 | A leak was detected in a top section of an economizer. The source of the leak was found to be at a tube weld. | Yes |
| 2019-03-01 | 0 | 0 | Steam line developed a leak as a result of corrosion causing a hazardous environment due to steam vapour cloud in the operating area limiting visibility. A engineered pressure enclosure was applied to eliminate the immediate hazard. | Yes |
| 2019-03-01 | 0 | 0 | A gasket leak was discovered at the channel to shell joint of a heat exchanger during startup following a maintenance outage. | Yes |
| 2019-03-01 | 0 | 0 | An operator noticed a small fire on a process gas header. Operations initiated a controlled shutdown without further incident. The source of fuel was process fluid that had leaked from cracked socket welds at drain connections. | Yes |
| 2019-02-28 | 0 | 0 | Abnormal flow induced vibration caused a crack to form in a weld-o-let fillet weld on a piping system. | Yes |
| 2019-02-25 | 0 | 0 | The bodies of two steam-jacketted process valves failed. The damage was cause by condensate that had accumulated in the valve bodies and froze due to failure of the associated steam traps. | Yes |
| 2019-02-24 | 0 | 0 | A leak was found on a steam sampling line. The line was supposed to be out of service, but the isolation valve was passing, allowing condensate to accumulate and freeze in the piping, causing it to rupture. | Yes |
| 2019-02-22 | 0 | 0 | A pipe nipple failed on a sight glass attached to sour gas suction scrubber leading to a release of gas which then ignited. The source of ignition was believed to be from hot engine components in the compressor skid package. | Yes |
| 2019-02-21 | 0 | 0 | Operators discovered a naptha leak in the inlet header piping at a branch connection to the main header. | Yes |
| 2019-02-21 | 0 | 0 | Operators found a naptha leak on the outlet header piping at a branch connection to the main header. | Yes |
| 2019-02-18 | 0 | 0 | Operators found a process line leaking gas. The source of the leak was found to be a crack in the heat affected zone of a reducer. | Yes |
| 2019-02-16 | 0 | 0 | Process fuel leaked from valves and ignited when it came into contact with hot piping below, causing a fire. | Yes |
| 2019-02-12 | 0 | 0 | Product froze in an air cooled heat exchanger tube due to low ambient temperature (-40C) and reduced flow. Freezing resulted in rupture of the tube which was revealed when the ambient temperature increased sufficent to melt the frozen product. | Yes |
| 2019-02-12 | 0 | 0 | A valve bonnet separated from the body releasing product. The failure was the result of freeze damage which occurred after maintenance work had been completed and the system was left without adequate insulation. | Yes |
| 2019-02-12 | 0 | 0 | Operators noticed process fluid dripping out of the insulation on a pressure piping system. Once the insulation was removed a pinhole leak was found in the piping at a weld. The system was shut down for repairs. | Yes |
| 2019-02-11 | 0 | 0 | A tube leak was discovered in a boiler economizer. The boiler was shut down repaired and leak tested. | Yes |
| 2019-02-11 | 0 | 0 | A loss of containment occurred in a process piping system due to a crack at the toe of a weld joining an 8” branch connection to a 14” pipe. | Yes |
| 2019-02-11 | 0 | 0 | Two air cooled heat exchangers sustained extensive freezing damage and were removed from service. | Yes |
| 2019-02-10 | 0 | 0 | Operators detected hydrocarbon leaking from an air cooled heat exchanger. The process was safely shutdown and the equipment isolated and purged for inspection. The leak was caused by freezing. | Yes |
| 2019-02-10 | 0 | 0 | A leak was discovered in a steam condensate line. The heat tracing system had failed resulting in freezing damage and loss of containment. | Yes |
| 2019-02-10 | 0 | 0 | A leak was discovered at a welded connection in a boiler economizer tube. | Yes |
| 2019-02-09 | 0 | 0 | Ammonia leaking from a fitting in the piping system resulted in evacuation of an ice area. | Yes |
| 2019-02-06 | 0 | 0 | Ammonia leak contained to mechanical room at an arena triggered an alarm and resulted in evacuation of the building. The source of the leak was an instrumentation connection near the compressor. | Yes |
| 2019-01-26 | 0 | 0 | Following startup of a compressor unit a small readily contained fire occurred due to leakage at a loose fitting. | Yes |
| 2019-01-24 | 0 | 0 | A leak occurred in a fitting in a process piping system due to impingment of steam injected into the process. | Yes |
| 2019-01-24 | 0 | 0 | Small bore piping on a compressor package developed a through wall crack. Inadequate support and vibrations is believed to be the cause of this failure. | Yes |
| 2019-01-22 | 0 | 0 | A deadleg in a steam condensate piping system failed due to freeze damage as a result of failure of the heat tracing system. | Yes |
| 2019-01-21 | 0 | 0 | An operator detected a hydrogen sulfide leak and shut the plant down. The source of the hydrogen sulfide was later determined to be a pinhole leak in a nozzle on a pressure vessel. | Yes |
| 2019-01-21 | 0 | 0 | A pressure piping system developed two through-wall leaks due to impingement of steam and process materials. | Yes |
| 2019-01-19 | 0 | 0 | Operations personnel detected process gas leakage from a piping system. The plant was safely shut down with no further consequences. | Yes |
| 2019-01-18 | 3 | 0 | A gas leak resulted in an explosion and fire in a compressor skid. | Yes |
| 2019-01-15 | 0 | 0 | A newly designed valve pass plate was installed into a valve and the flow pattern through the pass plate caused an erosive stream to the upper portion of the spool which led to the failure. | Yes |
| 2019-01-14 | 0 | 0 | A steam leak was discoverd on a steam header. Probable cause of tne leak is a fatigue crack at a support weld. | Yes |
| 2019-01-14 | 0 | 0 | Vertical air receiver sustained a crack at the weld to vessel interface, where the compressor base is welded to the head of the vessel. The unit was taken out of service. | Yes |
| 2019-01-14 | 0 | 0 | A tube in an air cooled heat exchanger failed due to freezing, causing the compressor to trip. | Yes |
| 2019-01-08 | 0 | 0 | A pinhole leak was discovered in a high pressure steam condensate line. | Yes |
| 2019-01-07 | 0 | 0 | A leak was discovered at a socket weld in a 1||| high pressure steam line. | Yes |
| 2019-01-04 | 0 | 0 | A remote site was left uninspected for several days in cold weather. Fuel gas to the unit heater was lost. The fuel gas scrubber (a fitting) was frozen and ruptured. | Yes |
| 2019-01-04 | 0 | 0 | During operation of a fired treater, the firetube failed due to localized overheating caused by scale fouling on the process side. | Yes |
| 2018-12-28 | 0 | 0 | A leak was found in a process piping system. Errosion-corrosion is the suspected damage mechanism. | Yes |
| 2018-12-17 | 0 | 0 | Gas leaked from a failed compressor cylinder valve cap O-ring resulting in a fire which damaged a pressure vessel. | Yes |
| 2018-12-16 | 0 | 0 | A leak was discovered in a section of process piping that had been isolated without freezing protection during a shut down. The leak was discovered when the frozen product thawed after start up. | Yes |
| 2018-12-16 | 0 | 0 | A steam leak was discovered at a flanged connection in a piping system soon after startup. The leak seems to have been the result of freezing damage that occurred during the outage. | Yes |
| 2018-12-13 | 0 | 0 | A heat exchanger tube bundle had been removed from the shell for maintenance. Process residue on the tubes ignited resulting in a small fire. | No |
| 2018-12-12 | 0 | 0 | A high pressure steam condensate line developed a leak and was shut down for repair. | Yes |
| 2018-12-10 | 0 | 0 | A gas leak from a sight glass gasket on a suction scrubber resulted in a fire in a compressor skid. | Yes |
| 2018-12-08 | 0 | 0 | The burner control on a process heater failed to shut down, resulting in overheating of the firetube. | Yes |
| 2018-12-07 | 0 | 0 | The expansion joint in the non-code firetube of a line heater failed resulting in loss of heat medium. | Yes |
| 2018-12-05 | 0 | 0 | A firetube flange gasket on a fired treater leaked, releasing process fluid. The leak was the result of over-torquing the flange bolts. | Yes |
| 2018-12-05 | 0 | 0 | Oil was found leaking into the firetube of a fired treater. The treater was immediately safely shut down, with no further consequences. | Yes |
| 2018-12-03 | 0 | 0 | Small bore piping on a compressor suction scrubber failed, releasing gas. The gas ignited causing an explosion and fire. | Yes |
| 2018-11-29 | 0 | 0 | Cold weather caused the contents (mud & water) of a well site separator to freeze, resulting in vessel rupture. The building unit heater was not in operation at the time. | Yes |
| 2018-11-29 | 0 | 0 | Operators discovered a tube leak in an air cooled heat exchanger. The leak was caused by freezing of liquids in the tubes. | Yes |
| 2018-11-29 | 0 | 0 | Low ambient temperature caused the water in the shell side of a lube oil cooler to freeze, resulting in shell rupture. | Yes |
| 2018-11-20 | 0 | 0 | An unexpected accumulation of water in a product transfer pipe froze and caused the pipe to split, releasing product. | Yes |
| 2018-11-20 | 0 | 0 | Operators discovered a process fluid leak in a piping system. Further inspection found two pinholes and significant wall loss due to corrosion in the area of concern. | Yes |
| 2018-11-15 | 0 | 0 | Operators discovered a leak at a flange on a PSV inlet. Further inspection revealed that the flange body had formed a pinhole leak. | Yes |
| 2018-11-13 | 0 | 0 | Plant operator found steam leaking from a steam heat coil. The source of the steam leak was found to be at a socket weld tee fitting. | Yes |
| 2018-11-07 | 0 | 0 | Service fluid leaked from an air cooled heat exchanger as a result of tube wall material loss. | Yes |
| 2018-11-01 | 0 | 0 | Operators found a process gas leak in a piping system. The source of the leak was determined to be a crack in the weld heat affected zone of a reducer. | Yes |
| 2018-10-30 | 0 | 0 | A bellows in a process unit failed due to stress corrosion cracking after a relatively short period of service. | Yes |
| 2018-10-30 | 0 | 0 | A process fluid leak was found under a heat exchanger. The source of the leak was found to be a nozzle that had deteriorated due to corrosion. | Yes |
| 2018-10-24 | 1 | 1 | A wellhead vessel failed. There was one fatality and one person injured. | Yes |
| 2018-10-23 | 0 | 0 | A socket weld cracked in a 2 inch pressure piping system releasing hydrocarbon which was detected by instrumentation and the plant was shut down without further incident. | Yes |
| 2018-10-23 | 0 | 0 | During start-up of a boiler, an unstable fire in the furnace led to a small fuel gas explosion, which resulted in damage to control wiring. | No |
| 2018-10-17 | 0 | 0 | Process leaked from a flanged connection resulting in a fire. The source of the ignition was hot work taking place in the vicinity. | Yes |
| 2018-10-17 | 0 | 0 | Instrument tubing failed resulting in uplanned shutdown of a power plant. | Yes |
| 2018-10-16 | 1 | 0 | During a process upset, a valve was opened to depressurize the system. Gas from the valve ignited in a flash fire, resulting in burns to the operator. | Yes |
| 2018-10-15 | 0 | 0 | A fuel gas supply hose failed in a compressor skid, resulting in a fire. | Yes |
| 2018-10-11 | 0 | 0 | Operators observed a leaking nipple on the discharge side of the compressor piping. The piping was safely isolated without further incident. | Yes |
| 2018-10-04 | 0 | 0 | Failure of a bi-metallic weld in a reformer furnace resulted in leakage of combustible hydrocarbon gas. There was no fire or explosion. | Yes |
| 2018-10-03 | 2 | 0 | A pressure vessel containing pyrophoric material was being prepared for inspection. When exposed to the atmosphere the pyrophoric material ignited causing a fire. | No |
| 2018-09-20 | 0 | 0 | A compression fitting failed in a pressure piping (tubing) system. | Yes |
| 2018-08-20 | 1 | 0 | A 500 gallon propane tank was being cut into pieces by hydraulic shears attached to a track hoe. When the pressure boundary of a tank was breached propane escaped forming a propane vapour cloud which ignited in a flash fire. | Yes |
| 2018-08-15 | 0 | 0 | A leak developed in a 2||| sulfuric acid transfer piping system. The leak resulted in approximately 500 kg of 98% sulfuric acid spilling to the ground. | Yes |
| 2018-08-14 | 0 | 0 | A firetube salt bath heater failed resulted in overheating and failure of the non-code shell. | No |
| 2018-08-10 | 0 | 0 | A piece of 1/2 inch stainless steel tubing connecting the autoclave to the condenser ruptured, releasing hot vapours and hydrogen gas above the auto ignition temperature of the mixture. A fire was the result. | Yes |
| 2018-07-24 | 0 | 0 | A process upset resulted in a lack of flow to a heat exchanger, causing localized overheating and a flange leak. Escaped process fluid ignited, causing a fire that was quickly extinguished by operations. | Yes |
| 2018-07-09 | 0 | 0 | A pumpjack engine back-fired and discharged embers onto combustible insulation which started to burn. Process instrumentation and control equipment was damaged by the fire. | No |
| 2018-07-09 | 0 | 0 | During operation of a fired treater the firetube failed (through-wall pitting), releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2018-07-03 | 0 | 0 | A de-sanding valve in a SAGD facility failed releasing process fluids. | Yes |
| 2018-06-29 | 0 | 0 | Small bore piping (tubing) in high pressure liquid oxygen service failed. A small quantity of liquid oxygen was released prior to safe shut down of the plant. | Yes |
| 2018-06-28 | 0 | 0 | Steam header through wall crack leaking steam. Weld at repad developed crack along the toe of the weld. | Yes |
| 2018-06-27 | 0 | 0 | A leak was discovered between the tube sheet and tube of a glycol boiler. The unit was safely shut down. | Yes |
| 2018-06-22 | 0 | 0 | Company inspectors discovered propane tanks being used as air receivers and had them removed from service. | No |
| 2018-06-21 | 1 | 0 | An operator was hospitalized for treatment of burns caused by steam and hot water released from a steam-out hose connection. | No |
| 2018-06-19 | 1 | 0 | A worker was treated for burns caused by a flash fire which occurred while the worker was using a wash-wand to spray water into an open pressure vessel manway to prepare the vessel for internal inspection. | No |
| 2018-06-15 | 0 | 0 | Process piping was overheated from a high temperature reaction that occurred inside the pipe. | No |
| 2018-06-12 | 0 | 0 | Through wall corrosion of vent piping on a thermal liquid tank allowed thermal liquid to leak. | Yes |
| 2018-06-07 | 1 | 0 | The safety valves on a compressor package were removed for servicing. A process upset ocurred, introducing natural gas into the piping system which leaked from the openings, resulting in a fire. An operator was burned. | Yes |
| 2018-06-06 | 0 | 0 | Hydrocarbon leaked from the weld at a small bore piping branch connection resulting in a fire. | Yes |
| 2018-06-05 | 0 | 0 | Process piping was overheated from a high temperature reaction that occurred inside the pipe. | No |
| 2018-05-29 | 1 | 0 | During the shutdown of a boiler feedwater pump, a hose was used to drain the system. As the drain valve was opened and flow started, the hose whipped due to the discharge reaction and the operator was sprayed by hot water and burned. | Yes |
| 2018-05-29 | 0 | 0 | The shell of a heat exchanger in hot water service was deformed and developed a through-wall crack due to overpressure. | Yes |
| 2018-05-18 | 0 | 0 | Operators discoveed a leak at a nozzle weld on suction scrubber piping. The plant was shut in and depressurized with no consequential damage. | Yes |
| 2018-05-08 | 0 | 0 | During start-up of a power boiler, the steam drum manway gasket failed, releasing steam. | Yes |
| 2018-05-03 | 0 | 0 | Heating boiler furnace explosion resulted in damage to the boiler casing. | No |
| 2018-04-30 | 0 | 0 | Excessive heat input from an electric heater caused the shell of a pressure vessel to fail, releasing process fluid. The fluid ignited, causing a fire. | Yes |
| 2018-04-23 | 1 | 0 | A furnace explosion occurred during start-up of a power boiler. The operator was treated for burns in hospital. | No |
| 2018-04-20 | 0 | 0 | A heating boiler was destroyed by excessive heat from overfiring. | No |
| 2018-04-17 | 0 | 0 | Small bore piping on a compressor suction bottle failed, releasing gas which resulted in a fire. | Yes |
| 2018-04-15 | 0 | 0 | Small bore piping failure on engine fuel gas piping released fuel gas to building resulting in explosion and fire. | Yes |
| 2018-04-13 | 0 | 0 | Hydrocarbon leaked from a heat exchanger shell to channel joint resulting in a fire. | Yes |
| 2018-04-12 | 0 | 0 | Heating boiler furnace explosion resulted in damage to the boiler casing. | No |
| 2018-04-09 | 0 | 0 | Sight glass in a weak acid cation water softener failed, resulting in a loss of containment. | Yes |
| 2018-04-07 | 0 | 0 | An unintentional release of process fluid through a valve ignited, causing a fire. | Yes |
| 2018-03-26 | 0 | 0 | Fire destroyed 2 fuel gas scrubbers and associated piping. | No |
| 2018-03-19 | 0 | 0 | The contents in the depressurizing line from a pig receiver froze resulting in failure of the depressurizing line. | Yes |
| 2018-02-12 | 0 | 0 | During operation of a fired treater the firetube gasket failed, releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2018-02-08 | 0 | 0 | During operation of a fired treater the firetube failed (through-wall crack), releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2018-02-02 | 0 | 0 | The contents in a closed pressure vessel froze resulting in failure of the pressure vessel shell. | Yes |
| 2018-01-14 | 0 | 0 | The contents in a closed pressure vessel froze resulting in failure of the pressure vessel shell. | Yes |
| 2018-01-10 | 0 | 0 | A small bore piping (tubing) leak resulted in a fire in a compressor skid. | Yes |
| 2018-01-09 | 0 | 0 | A process upset resulted in a reaction fire inside a pressure piping system. | No |
| 2017-12-21 | 0 | 1 | Heating boiler exhaust piping failed causing flue gas to accumulate in a building. A worker died from exposure to carbon monoxide. | No |
| 2017-12-06 | 0 | 0 | Hydrocarbon released from flare stack ignited and destroyed fuel gas supply building. Hydrocarbon was from PSV discharging to flare stack. | Yes |
| 2017-11-30 | 0 | 1 | Pressure released from a sandblast hopper caused a worker to fall off the equipment. The worker later died of his injuries. | Yes |
| 2017-11-17 | 0 | 0 | An ammonia leak in an ice arena resulted in the evacuation of the building. There were no injuries reported. | Yes |
| 2017-11-16 | 0 | 0 | Hydrocarbon leaked from a valve packing gland in a process facility. The leak was detected, and activated the plant alarm. | Yes |
| 2017-11-01 | 0 | 0 | A hose used to transfer liquid hydrocarbon was overpressurized. | Yes |
| 2017-10-19 | 0 | 0 | Hydrocarbon leaked from a threaded plug in small bore piping vent. The leaked fluid caught fire. | No |
| 2017-09-22 | 0 | 0 | A tube leak resulted in a smelt water reaction in a recovery boiler furnace. | Yes |
| 2017-09-12 | 1 | 0 | Buried piping was damaged by construction activities, causing a hydrocarbon leak that resulted in an explosion. | Yes |
| 2017-08-28 | 0 | 0 | A gas leak in small bore braided hose resulted in a fire at a compressor station. | Yes |
| 2017-08-15 | 0 | 0 | Freeze damage was discovered during seasonal maintenance of out-of-service pressure piping. | Yes |
| 2017-08-02 | 0 | 0 | A flange gasket leaked process fluid from a treater vessel resulting in a fire. | Yes |
| 2017-07-13 | 0 | 0 | A hydrate plug formed in a piping system. The hydrate plug broke free and impacted a valve downstream, causing mechanical damage which resulted in a leak. | Yes |
| 2017-07-12 | 0 | 0 | Gas leaked from a flanged joint resulting in a fire. The fire was extinguished and there was no consequential damage. | Yes |
| 2017-07-11 | 0 | 0 | Lightning strike caused a fire at a separator building, damaging the pressure equipment inside. | No |
| 2017-06-20 | 0 | 0 | Through wall corrosion on the drain line of a fuel gas scrubber allowed process fluid to escape. Operators discovered the leak and initated an emergency shut down of the unit, preventing a fire from occuring. | Yes |
| 2017-06-16 | 0 | 0 | The threaded bonnet separated from the body of a pressure relief valve due to forces resulting from the discharge piping system freezing. | Yes |
| 2017-06-16 | 0 | 0 | During operation of a fired treater the firetube failed, releasing process fluid. The fluid ignited causing a fire | Yes |
| 2017-05-31 | 2 | 0 | A nonmetallic pipe failed during operation, releasing acid which contacted two operators. | Yes |
| 2017-05-22 | 0 | 0 | A procedural error in drawing process fluid from a system resulted in a small fire. | No |
| 2017-05-17 | 0 | 0 | The gasket failed in a treater firetube flange releasing oil which ignited resulting in fire damage to the treater, pop tank and building. | Yes |
| 2017-05-05 | 0 | 0 | During maintenance welding of structural steel, combustible material was ignited. The resulting fire damaged pressure vessels and piping. | Yes |
| 2017-04-04 | 0 | 0 | During operation of a fired treater, the firetube failed due to localized overheating caused by scale fouling on the process side. Process fluid leaked into the firetube, causing a fire. | Yes |
| 2017-03-31 | 0 | 0 | A leak at a weld released process fluid, which auto-ignited resulting in a small, localized fire, with no collateral damage. | Yes |
| 2017-03-14 | 1 | 0 | A process fluid leak in created a vapour cloud which ignited and caused a fire. One worker was treated for burns. | Yes |
| 2017-03-13 | 2 | 0 | During maintenance of an ammonia system a worker inadvertantly caused an isolation valve to partially open, releasing ammonia. Two workers were injured as a result of contact with the released ammonia. | Yes |
| 2017-02-19 | 0 | 0 | A through wall crack in a pressure vessel resulted in a loss of containment and fire. | Yes |
| 2017-02-12 | 0 | 0 | Firetube boiler furnace tube overheated and failed due to waterside fouling. | Yes |
| 2017-02-12 | 0 | 0 | During manual desanding of a separator vessel, the drain line became plugged and failed. | Yes |
| 2017-01-26 | 0 | 0 | During the hydrostatic pressure test of a pressure piping system, a valve failed in the test assembly used to connect the piping to the pressure source. | Yes |
| 2017-01-24 | 0 | 0 | A process heater overheated and failed during startup. | Yes |
| 2017-01-13 | 0 | 0 | A flash fire occurred in a compressor building. | No |
| 2017-01-12 | 0 | 0 | A gasket failed on a sour service oil treater. | Yes |
| 2017-01-04 | 0 | 0 | A fire occurred during the start-up of a compressor. | No |
| 2016-12-14 | 0 | 0 | Fluid leaked into off line compressor discharge piping and froze. Compressor cylinder was damaged by excessive pressure when compressor was started. | No |
| 2016-12-10 | 0 | 0 | Pin-hole leak in branch connection weld to pressure vessel nozzle released small amount of hyrdrocarbon resulting in a fire. The nozzle had corrosion resistant overlay, but the the branch connection did not. | Yes |
| 2016-11-24 | 0 | 0 | A control system malfunctioned releasing process fluids. The fluids ignited causing a fire. | No |
| 2016-11-15 | 0 | 0 | A fire in a compressor skid resulted in damage to pressure piping. | No |
| 2016-09-09 | 0 | 0 | A flange gasket in a pressure piping system containing heavy oil failed resulting in a fire. | Yes |
| 2016-09-08 | 0 | 0 | A furnace explosion occurred during start-up of a gas fired heating boiler. | No |
| 2016-08-12 | 0 | 0 | An engine fire damaged a fuel gas scrubber and the associated piping system. | No |
| 2016-06-22 | 0 | 0 | Process fouling in a heat exchanger resulted in localized overheating and loss of containment. | Yes |
| 2016-06-21 | 0 | 0 | Hydrocarbons were released due to operational error, resulting in a fire that caused no damage to the pressure equipment. | No |
| 2016-06-14 | 0 | 0 | Pressure vessels and piping were damaged by fire at natural gas wellsite. The fire is suspected to have been initiated by a lightning strike. | No |
| 2016-06-09 | 1 | 0 | An operator recieved first degree burns to hands and neck from blowback during light-off of fired treater burner. | No |
| 2016-05-18 | 0 | 0 | Liquid hydrocarbon leaked in a pumphouse, causing a fire that damaged pressure piping. | Yes |
| 2016-05-05 | 0 | 0 | A fibreglass pop tank caught fire at an unmanned wellhead facility. Pressure vessels and associated piping were damaged from heat exposure. | No |
| 2016-04-26 | 1 | 0 | An operator was draining a hot water storage tank. The threaded drain pipe swung due to reaction forces. The operator was burned by hot water and steam. | No |
| 2016-03-02 | 0 | 0 | Oil emulsion leaked into a fire tube in an idle free water knock out vessel. The oil was eventually ignited by the burner pilot resulting in a fire which damaged auxilliary equipment. | No |
| 2016-02-12 | 0 | 0 | During operation of a fired treater, a crack developed in the firetube releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2016-02-11 | 0 | 0 | Accumulation of condensate in an isolated section of steam piping froze and caused the pipe to rupture. | Yes |
| 2016-02-10 | 0 | 0 | A hydrocarbon leak from a piping system in a processing facility resulted in a small fire. The plant was shut down safely with no further damage. | Yes |
| 2016-02-05 | 0 | 0 | During normal operation, process piping failed due to service induced deterioration. Corrosion under insulation was a factor. | Yes |
| 2016-02-04 | 0 | 0 | Unattended portable fired heater used to thaw frozen pressure equipment in a skid building ignited a tarp causing a fire. | No |
| 2016-01-22 | 0 | 0 | During normal operation a steam heating boiler overheated due to low water level. | Yes |
| 2016-01-18 | 0 | 0 | A through wall crack developed in process piping during operation. | Yes |
| 2016-01-15 | 0 | 2 | Explosion in hydrocracker unit. Two workers killed. | Yes |
| 2016-01-05 | 1 | 0 | Sight glass failure on a process vessel. Operator received burns to hands from hot liquid. | Yes |
| 2016-01-04 | 0 | 0 | A boiler blowdown line froze and ruptured due to inadequate heat tracing. | Yes |
| 2016-01-04 | 0 | 1 | A 20-pound propane bottle that had been filled with water and was being heated with a propane torch, to produce steam, when it failed catastrophically. One man was killed. | Yes |
| 2015-12-28 | 0 | 0 | A header in an air cooled steam condenser ruptured due to freezing. | Yes |
| 2015-12-28 | 0 | 0 | A compressor engine fire caused damage to a pressure vessel and associated piping. | No |
| 2015-12-15 | 1 | 0 | A fitting failed during start-up of a compressor following routine maintenance. A worker was struck and injured by debris. | Yes |
| 2015-12-09 | 0 | 0 | Fire caused by a flange leak during start-up of a heat exchanger in hydrocarbon service. | Yes |
| 2015-12-08 | 1 | 1 | A man-lift device struck a pipe in low pressure liquid ammonia service. The pipe broke releasing ammonia, resulting in one fatality. | Yes |
| 2015-12-07 | 0 | 0 | A through wall crack developed in process piping during operation. | Yes |
| 2015-12-03 | 3 | 0 | During maintenance a valve was removed from a propane tank, releasing propane gas. The propane gas ignited, causing an explosion. | No |
| 2015-12-01 | 0 | 0 | Fire caused by service-induced deterioration of a tube in a fired process heater during operation. | Yes |
| 2015-11-10 | 0 | 0 | A flange in high pressure steam service failed during start-up of the steam plant. | Yes |
| 2015-10-31 | 0 | 0 | Process piping failed due to freezing, as a result of inadequate heat tracing. Escaping hydrogen ignited causing a fire. | Yes |
| 2015-10-22 | 0 | 0 | Due to an improper air/gas ratio, a furnace explosion occurred in a boiler during operation. | No |
| 2015-10-21 | 1 | 0 | During maintenance of a heating plant, a safety valve unexpectedly relieved, releasing steam in the direction of a worker. | No |
| 2015-10-15 | 0 | 0 | During start-up, a process plant was overpressured due to an unexpected blockage in the piping. | No |
| 2015-10-08 | 0 | 0 | During maintenance on a refrigeration system in an ice rink, ammonia was inadvertantly released. | Yes |
| 2015-09-17 | 0 | 0 | Mechanical joint leak in a fired process heater. | Yes |
| 2015-09-14 | 0 | 0 | Unanticipated flow impingement caused abrasive wear to a pressure vessel, resulting in a pinhole failure. | Yes |
| 2015-09-04 | 0 | 0 | A mechanical joint failed releasing process fluid, which ignited and caused a fire. | Yes |
| 2015-08-30 | 0 | 0 | A threaded connection failed on compressor pressure piping. The failure released gas which ignited in the compressor building. | Yes |
| 2015-08-29 | 0 | 0 | During a planned shutdown, a heat exchanger gasket failed releasing process fluid. The fluid ignited, causing a fire. | Yes |
| 2015-08-29 | 0 | 0 | Due to external corrosion, a process piping line ruptured releasing process fluid. The fluid ignited, causing a fire. | Yes |
| 2015-07-29 | 0 | 0 | A pressure vessel overheated during a temperature excursion, resulting in permanent deformation of a section of the shell. | No |
| 2015-07-07 | 0 | 0 | During start-up of a new facility, a vessel was over-pressurized as a result of improperly operating controls and relief device. | No |
| 2015-06-25 | 0 | 0 | Due to an improper air/gas ratio, a furnace explosion occurred in a package boiler during start-up. | No |
| 2015-06-24 | 1 | 0 | An operator was burned by hot process fluids while preparing a vessel for inspection. | Yes |
| 2015-06-24 | 0 | 0 | A lightning strike caused a fire in an atmoshperic storage tank. The fire damaged nearby pressure equipment. | No |
| 2015-06-23 | 0 | 0 | During operation of a fired heater, a crack developed in the firetube releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2015-06-16 | 0 | 0 | During operation of a fired treater, a crack developed in the firetube releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2015-06-06 | 0 | 0 | A pressure vessel containing pyrophoric material was being prepared for inspection. When exposed to the atmosphere the pyrophoric material ignited causing a fire. | No |
| 2015-06-01 | 0 | 0 | During operation of a fired treater, a crack developed in the firetube releasing process fluid. The fluid ignited causing a fire. | Yes |
| 2015-05-20 | 0 | 0 | During maintenance of an ammonia refrigeration system, ammonia was inadvertantly released from the system. | Yes |
| 2015-05-12 | 0 | 0 | During upset conditions, a sulfur condenser tube was overheated and ruptured, releasing boiler feedwater. | Yes |
| 2015-05-08 | 0 | 0 | Due to operational upsets, a pressure vessel was damaged due to overheating. | No |
| 2015-05-02 | 1 | 0 | An operator was burned by process fluid while performing maintenance on a filter vessel. | Yes |
| 2015-04-13 | 0 | 0 | A heat exchanger leaked due to a crack on a welded seam. Natural gas was released, but there was no fire. | Yes |
| 2015-04-09 | 0 | 0 | Due to service induced deterioration, a heat exchanger tube failed at the tube-to-tubesheet connection, releasing process fluid. | Yes |
| 2015-03-20 | 0 | 0 | During start-up a pressure vessel was overpressured due to improper valve operation. | No |
| 2015-03-18 | 0 | 0 | During start-up of a power boiler, localized overheating resulted in the failure of several superheater tubes. | Yes |
| 2015-03-17 | 0 | 0 | An air hose connection separated on the discharge side of a compressor. The escaping air pressure and residual debris struck two workers. | Yes |
| 2015-01-28 | 0 | 0 | Due to an improper air/gas ratio, a furnace explosion occurred in a firetube boiler during start-up. | No |
| 2015-01-15 | 0 | 0 | A pressure vessel and associated piping were overpressured as a result of process fluid freezing in a blocked-in line. | No |
| 2015-01-12 | 0 | 0 | A safety relief valve failed at the inlet threads due to fatigue caused by vibration. | Yes |
| 2015-01-01 | 0 | 0 | During operation of a fired treater, the firetube ruptured releasing process fluid. The fluid ignited causing a fire. | Yes |
This is a summary of pressure equipment unsafe conditions, accidents and fires that have been reported to and investigated by ABSA. This information is provided to make people aware of the general nature of pressure equipment unsafe conditions, accidents and fires. The intent is to heighten the awareness of the general public to the hazards of pressure equipment in an effort to prevent injury.
Note: “Loss of Containment” as used in this report refers to the loss of any amount of process fluid from the pressure equipment.