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LDEQ Accident Number Accident Date |
Point Source/Release | Cause | Notes |
120288 2009-12-20 | Point Source(s): Unit 63 Tends Pump Pollutant(s):Hydrogen - BRQ | Cause of Problem: Equipment Failure Hydrogen leak in the #4 reactor lead to a fire within unit 212 platformer. | SERT was notified and responded. |
120284 2009-12-19 | Point Source(s): unit 63 Pollutant(s):Propylene - BRQ | Cause of Problem: Seal or Gasket The tend pump in unit 63 Tank FArm blew a seal releasing propylene to the atmosphere | the pump was vented to flare. |
119673 2009-11-23 | Point Source(s): kerosene hydrotreater unit Pollutant(s):Nitrogen - 24 pounds Hydrogen - 4 pounds Hydrogen Sulfide - 4 pounds Methane - 0 pounds Ethane - 1 pounds Propane - 3 pounds n-Butane - 2 pounds 1-Pentene - 0 pounds n-Pentane - 3 pounds Butane - 5 pounds | Cause of Problem: Human Factors During start-up of the kerosene hydrotreater unit (KHT), a bleeder valve o a piperack outside the unit was inadvertently left open, releasing gas into the atmosphere. | the line was isolated, and the valve was closed. |
116971 2009-08-03 | Point Source(s): coke drum Pollutant(s):Petroleum Coke - BRQ | Cause of Problem: Equipment Failure During coke cutting operation, a sudden fall-out of the coke drum contents took place. | personnel sheltered until the nature of the accident was understood. |
116933 2009-07-31 | Point Source(s): None Reported Pollutant(s): | Cause of Problem: Equipment Failure A small fire occurred as a result of a malfunction of the coker conveyor belt. No RQs were exceeded. | The fire was extinguished. Exact pollutants are not know and were not disclosed. "Products of combustion" were reported released by Marathon. The fire lasted about 40 minutes. |
116896 2009-07-29 | Point Source(s): unit 27 Pollutant(s):Hydrogen Flouride - 0 pounds | Cause of Problem: Seal or Gasket Hydrogen Fluoride mixed with iso-butane, butane, and a seal barrier fluid sprayed from a quick connect on the seal pot of the main fractionator reflux pump onto an operator's left arm and shoulder. The injured operator was kept in a hospital overnight. | the pump was isolated and the line plugged. |
116261 2009-07-07 | Point Source(s): Railcar loading rack, Unit 64 (EQI 14-97, EQT 0055) Pollutant(s):Propylene - 728 pounds Nitrogen Oxide - 176 pounds Carbon Monoxide - 955 pounds | Cause of Problem: Equipment Failure Leaks on a relief valve flange and a dome flange were discovered on a rail-car when it arrived at the plant. | The car was relieved to flare instead of pressuring the car to off-load the contents, which is the normal procedure. Pressuring the car would have made the leaks worse. |
115720 2009-06-16 | Point Source(s): exchanger 05-1313 Pollutant(s):Ethylene - 0 pounds Propane - 5 pounds Propylene - 3 pounds Isobutane - 1 pounds n-Butane - 4 pounds 1-Butene - 4 pounds 1-Pentene - 3 pounds n-Pentane - 9 pounds Pentene - 65 pounds Hexane - 68 pounds Hydrogen Sulfide - 0 pounds | Cause of Problem: Equipment Failure Pinhole leak from exchanger, 05-1313, caused a release of naphtha to the coker unit pad. | the exchanger was isolated, and contents were directed to the oily water sewer. |
115595 2009-06-11 | Point Source(s): Hydrocarbon feed exchanger Pollutant(s):Benzene - 1 pounds Naphtha - 100 gallons Hydrogen Sulfide - 13 pounds Volatile Organic Compounds (VOCs) - 414 pounds Naphtha - 100 gallons | Cause of Problem: Maintenance/Procedures While cleaning the exchanger a piece of tubing blew out causing a release of naptha to the exchanger pad. | Residual naphtha was washed into the oily sewer. The exchanger was isolated. |
115506 2009-06-06 | Point Source(s): unit 15 Pollutant(s):Hydrogen Sulfide - BRQ | Cause of Problem: Piping or Tubing Pin hole leak in he unit 15 HGO hot separator overhead fin fan. | Reportable quantities were no exceeded so no information was given. Letter from the refinery not available. |
115394 2009-06-01 | Point Source(s): Unit 15 HGO hydrotreater Pollutant(s):Hydrogen Sulfide - 20 pounds Volatile Organic Compounds (VOCs) - 24 pounds Ethane - 55 pounds Highly Reactive Volatile Organic Compounds (HRVOCs) - 1 pounds | Cause of Problem: Equipment Failure Pin-hole leak in unit 15's hot separator overhead fin fan. | Fin fan was blocked in and tube isolated. |
115023 2009-05-16 | Point Source(s): Platformer Debutanizer Trim Cooler, #1 Cooling Tower EQI: 61a-74 Pollutant(s):Methane - 1 pounds Ethane - 37 pounds Propane - 158 pounds Isobutane - 102 pounds n-Butane - 504 pounds 1-Pentene - 54 pounds n-Pentane - 28 pounds Volatile Organic Compounds - 1,780 pounds | Cause of Problem: Corrosion A high LEL was found at the #1 cooling tower, operations started checking for leaks and found that the debutanizer overhead trim cooler, 12-1309, was leaking hydrocarbons into the cooling water. Leak caused by under deposit corrosion. | The debutanizer trim cooler was isolated and leaking tubing plugged. |
No LDEQ Number Available 2009-04-20 | Point Source(s): dock Pollutant(s):#6 Oil - BRQ | Cause of Problem: No Information Given While preparing the dock arm for loading operations, the arm was found full of product. A small amount spilled out of the drip pan that was used to drain the product. | oil was cleaned up. |
114098 2009-04-10 | Point Source(s): tank-500-8 Pollutant(s):Oil - 36 pounds | Cause of Problem: Piping or Tubing a leak was found in tank-500-8 de-watering line. | line was isolated and the site cleaned up. |
113740 2009-03-26 | Point Source(s): tank-500-1 Pollutant(s):Hydrocarbon - 500 pounds Benzene - 4 pounds | Cause of Problem: Human Factors There is a frac tank that drains tank-500-1 when it overflows, after drainage the valve that drains the tank was left open. | roof drain was blocked. another vacuum truck was called in to drain the tank, and on-site cleanup was started. |
112752 2009-02-14 | Point Source(s): No information given No information given. Pollutant(s):Methane - BRQ Ethane - BRQ Hydrogen - BRQ Nitrogen - BRQ | Cause of Problem: No Information Given No RQs were exceeded so no information is given | No RQs were exceeded so no information is given |
112890 2009-01-23 | Point Source(s): south flare flare Pollutant(s):Volatile Organic Compounds - 386 pounds Nitrogen Oxide - 111 pounds Carbon Monoxide - 607 pounds Volatile Organic Compounds - 748 pounds Hydrogen Sulfide - 89 pounds Nitrogen Oxide - 1,032 pounds Sulfur Dioxide - 33,375 pounds Carbon Monoxide - 5,614 pounds | Cause of Problem: Seal or Gasket A valve misalignment on the iso-butane pump allowed iso-butane to be routed to the flare for approximately six hours before being discovered. While troubleshooting the flaring incident, operations found the relief valve on th DHT unit's recycle gas scrubber "chatter" to the flare. during the investigation it was discovered that the newly installed valve had malfunctioned | none, the releases went unnoticed until later. |
111745 2009-01-04 | Point Source(s): Unit 11 Pollutant(s):Naphtha - 15 pounds | Cause of Problem: Seal or Gasket A flash fire occurred when a valve above a bank of heat exchangers developed a leak in unit 11. | fire extinguished and heat exchanger blocked in. Also it was reported in the hazmat report that butane was a chemical identified during this accident occurrence. Unknown amount of butane release was not identified |
111750 2009-01-04 | Point Source(s): Tank 55-5 (Deasphalted Oil Storage Tank) Pollutant(s):Volatile Organic Compounds - 1,726 pounds | Cause of Problem: Start Up, Shut Down During a Rose Unit shutdown, the Rose Unit Deasphalted Oil (DAO) battery limits block valve was open and caused a chain reaction of butane leakage and water flashes. 1,726lbs of butane were released. | the event was "over before any corrective action could be taken." and the event is currently "under investigation". |
80067 2005-06-25 | Point Source(s): no information given Pollutant(s):Slurry Oil - 5 pounds | Cause of Problem: Equipment Failure Leaking clamp. No emission point source associated with it. | "The unit was shutdown to minimize the leak. Once shut sown the section of piping where the clamp was located was replaced prior to starting up the unit." |
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