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ExxonMobil Refinery (2638), Baton Rouge

Releases of Corrosive Waste

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release

Disengaging drum/ underground line on the Heavy Cat Naptha Unit
Cause: a leak was discovered in the water draw from the disengaging drum on the Heavy Cat Naptha Unit. The leak was from an underground line, and was due to external corrosion

Followup: No

Notes: This was not preventable because the inspection data for this line indicated that the line had an expected retirement date of April 2011. Inspection data also confirmed that the protective coating at the soil/air interface was in satisfactory condition.Remedial Measures - the leaking line was replaced. NOTE: the State Police RQ and the DEQ RQ for Corrosive Waste is 100. This leak produced 33,881lbs.of corrosive waste. The State Police RQ and DEDQ RQ for primary sludge is 1. This leak produced 81lbs. of primary waste
33,881.0 pounds

Alkylation Unit
Cause: the cause of the leak was isolated corrosion on a weld. A leak of spent sulfuric acid, D002, was discovered from an Alkylation line. The line was blocked out and purged with nitrogen to stop the leak. The spent acid was neutralized using soda ash and the contaminated soil is being remediated

Followup: No

Notes: The leak was not preventable because the inspection data indicated the line was satisfactory until 2007. Subsequent inspection data confirmed that the leak was due to localized corrosion and not predictable. Remedial Measures - the leaking section of the pipe will be replaced. The reportable quantity for D002, Corrosive Wastes was exceeded
150.0 pounds