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Valero (1238), Meraux

LDEQ Accident Report

Accident #99713
State Police #07-05752
Accident Date2007-09-24
Report Date 2007-10-02
Follow-up Date 0000-00-00
Follow-up: No Information Provided

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Sulfur DioxideNo Information GivenFLARE - Malfunction of Air Products Gas Oxygen Compressor / North FlareNOYESNO25.0 pounds

Accident Classified As:

Cause of Problem: Process Upset

a release to the North Flare in which process safety valve intermittently relieved pressure from the Area 6 Rich Amine Flash Drum. The unit was upset due to low hydrogen purity from Air Products due to a malfunction of their Gas/Oxygen Compressor.

Discharge Preventable -

Notes/Remedial Actions

In Murphy's report, they acknowledges that the Area 6 Rich Amine Flash Drum has been involved in two recent events - 8/23 and 9/10 but that improved monitoring systems have enabled MOUSA to more accurately estimated emissions. NOTE - the LDEQ report, which was made my Murphy, states that a hydrogen supply problem to the refinery and an faulty flow meter (which was replaced) were the causes of the release