LA Bucket Brigade : Refinery Accident Database

ConocoPhillips, Belle Chasse

LDEQ Incident Report

Incident #	136882
PDF Available	PDF
State Police #	12-00634
Incident Date	2012-02-01
Report Date	2012-03-28
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
Hydrogen	4m	1391-FF (1391-PSV-009)	NO	NO	NO	486.7 pounds
Methane	4m	1391-FF (1391-PSV-009)	YES	NO	YES	1,366.7 pounds
Ethane	4m	1391-FF (1391-PSV-009)	NO	NO	YES	4,630.4 pounds
Propane	4m	1391-FF (1391-PSV-009)	NO	NO	YES	6,470.4 pounds
Butane	4m	1391-FF (1391-PSV-009)	NO	NO	YES	4,531.4
1-Butene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	3.3 pounds
Butene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	9.7 pounds
2,2-Dimethylpropane	4m	1391-FF (1391-PSV-009)	NO	NO	YES	7.2 pounds
Pentane	4m	1391-FF (1391-PSV-009)	NO	NO	YES	1,983.2 pounds
3-Methyl-1-Butene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	1.3 pounds
trans-2-Pentene	4m	1391-FF (1391-PSV-009)	NO	NO	NO	0.5 pounds
2-Methyl-2-Butene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	0.5 pounds
Nitrogen	4m	1391-FF (1391-PSV-009)	NO	NO	NO	71.5 pounds
1-Pentene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	0.8 pounds
2-Methyl-1-Butene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	2.4 pounds
Benzene	4m	1391-FF (1391-PSV-009)	NO	NO	YES	5.4 pounds

Cause of Problem: Process Upset

There was an unexpected increase in the Depantanizer tower's overhead pressure causing PSV-009 to relieve. This was the result of the shutdown of the reboiler due to high burner pressure.

Discharge Preventable - Yes

The release was preventable. No other information given.

Notes/Remedial Actions

The reboiler (1391-H-4) temperature was lowered which lowered the pressure in the Depantanizer Tower allowing 1391-PSV-009 to reseat. There is no LDEQ report and no SPOC report attached to this file. 19,570 pounds released