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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #141659
State Police #12-04963
Accident Date2012-07-30
Report Date 2012-08-06
Follow-up Date 0000-00-00
Follow-up: No

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
PropyleneOngoingClamp of the discharge piping from MKC-02 propylene refrigeration compressor at the EPLA-W unitNONOYES2,073.4 pounds
Flammable VaporOngoingClamp of the discharge piping from MKC-02 propylene refrigeration compressor at the EPLA-W unitNONOYES2,973.4 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Piping or Tubing

Due to vibration of the piping, there was a leak on the clamp of the discharge piping from MKC-02 propylene refrigeration compressor at the EPLA-W unit. As of 08/06/12, the event is ONGOING, and releasing approximately 6.24 pounds per day of propylene.

Discharge Preventable - Yes

Notes/Remedial Actions

Upon discovery, the clamp was pumped with sealant to reduce the leak rate. The clamp continues to be pumped with sealant to reduce the leak rate. ExxonMobil and the clamp vendor are continuing efforts to improve clamp efficiency. Periodic leak monitoring will be conducted during normal operational rounds. A 60-day follow-up letter will be submitted, summarizing the permanent repairs.