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|LDEQ Accident Number
|Point Source(s)||Notes||Amount of Release|
|NC204||Cause: There was a ruptured disc tattle tale on NC204.|
Notes: The relief valve was isolated. Amount released is unknown but believed to be less than one pound. LABB file only contains State Police report--no LDEQ report.
|Reactor shell on NR301C||Cause: Hole in the reactor shell on NR301C.|
Notes: Shut down shell NR301C and secured it. Amount of ethylene dichloride released is unknown.
|a vessel||Cause: Vinyl chloride release from venting of a vessel when DCM Control System was lost. Released 5815lb VCM from thermal overpressure of a PVC reactor. The power filter malfunction caused UPSto shut down and allowed monetary power interruption to DCS and triggered a manual shut down.|
Notes: Shut down the unit to secure the release. The reliability of power filters was tested extensively before putting them back into service. People will be trained to look for power failures of this nature.
|Vinyl Chloride: 5,815.0 pounds|
|Discharge pump||Cause: A pinhole leak developed on a discharge pump, but the cause of the leak was unknown.|
Notes: The release was stopped by valving out the equipment and ceasing use. Amount of Vinyl Chloride and Ethylene Dichloride released is unknown.
|reboiler||Cause: Steam was lost throughout the plant, which caused the reboiler to cool down quickly, which caused the release from a gasket leak on the reboiler.|
Notes: The release was secured when the steam came back up. Late notification because "they were just tied up." Amount of Vinyl Chloride and Ethylene Dichloride released is unknown. LDEQ report indicates that LDEQ received written report on 7/8/08, but that report is not included in LABB's file.
|NT506A tank||Cause: There was a leak on NT506A tank. Readings on the tank were 11 PPM.|
Notes: Operators pumped the tank down to secure the incident.
|Quench filter pump||Cause: There was a pinhole leak on a quench filter pump.|
Notes: The leak was isolated, and troubleshooting for repairs was initiated.
|column||Cause: Leak from the bottom of a column and EDC leak. The cause of high pressure is unknown. High pressure caused steam to trip and column temperature went down causing expansion which allowed EDC to leak from the seals to the bottom of the column.|
|Reactor NR301A||Cause: Reactor NR301A developed a pinhole leak on a "hard blind." The plant personnel could not pick up the ethylene dichloride with dredger tubes adjacent to the reactor.|
Notes: The facility expressed plans to cap and reinforce the "hard blind."
|Ethylene dichloride: 10.0 pounds|
|condenser to coolant tower||Cause: Release of ethyl dichloride and vinyl chloride due to a condenser leak to the coolant tower.|
Notes: Retesting coolant tower. Amount of ethyl dichloride and vinyl chloride released is unknown.
|Relief valve on heat recovery steam generator #3||Cause: The cause is believed to have been the failure of two pressure regulators in series on the natural gas pipeline, which then caused the pressure relief valve to open to protect the integrity of the line and equipment. The release was discovered on 6/21/10, but the LDEQ report states that the release duration may have occurred over a 10-day period beginning on 6/12/10. Relief valve on heat recovery steam generator #3 for natural gas.|
Notes: Upon discovery, the release was immediately isolated.
|Natural Gas: 340,599.0 pounds|
|Furnace A (point source 230A)||Cause: Permission emissions limit was exceeded at Furnace A. A tube in the furnace convection section had failed. 143 lbs of HCL was emitted. No reportable quantity was exceeded.|
Notes: No information given
|Hydrogen Chloride: 143.0 pounds|
|Cooling Tower Heat Exchanger||Cause: The refinery reported a possible release when cooling tower samples showed high readings from a possible heat exchanger leak.|
Notes: Email communication indicates that there was an initial miscommunication concerning the sample results. According to the email, there was no exceedance of reportable quantities.