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Chalmette Refining (1376), Chalmette

LDEQ Accident Report

Accident #91457
State Police #06-06486
Accident Date2006-10-17
Report Date 2006-10-24
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
Sulfur Dioxide23 h 42 mAE-AOA-05-0109 EPN 29NOYESNO30.0 pounds
Nitrogen Oxide23 h 42 mAE-AOA-05-0109 EPN 29NOYESYES8,293.0 pounds

Accident Classified As:

Cause of Problem: Maintenance/Procedures

release occurs during major turn around of refinery. Planned system outages created higher than usual operating pressure on the WGS and AMU. Additionally, on 10/13, the stream was re-routed (misaligned) through a line with an unidentified check valve. Subsequent attempts to push liquid through the AMU line resulted in increased pressure on the WGS.

Discharge Preventable - Yes

Notes/Remedial Actions

Investigation ongoing. PSV set pressure was raised to allow for higher head pressure events at WGS without flaring. Detailed investigation ongoing.