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Phillips 66 (2418), Belle Chasse

LDEQ Accident Report

Accident #136882
State Police #12-00634
Accident Date2012-02-01
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
Hydrogen4m1391-FF (1391-PSV-009)NONONO485.7 pounds
Methane4m1391-FF (1391-PSV-009)YESNOYES1,366.7 pounds
Ethane4m1391-FF (1391-PSV-009)NONOYES4,630.4 pounds
Propane4m1391-FF (1391-PSV-009)NONOYES6,470.4 pounds
Butane4m1391-FF (1391-PSV-009)NONOYES2,395.8 pounds
1-Butene4m1391-FF (1391-PSV-009)NONOYES2,135.6 pounds
Butene4m1391-FF (1391-PSV-009)NONOYES9.7 pounds
2,2-Dimethylpropane4m1391-FF (1391-PSV-009)NONOYES7.2 pounds
Pentane4m1391-FF (1391-PSV-009)NONOYES1,983.2 pounds
3-Methyl-1-Butene4m1391-FF (1391-PSV-009)NONOYES1.3 pounds
trans-2-Pentene4m1391-FF (1391-PSV-009)NONONO0.5 pounds
2-Methyl-2-Butene4m1391-FF (1391-PSV-009)NONOYES0.5 pounds
Nitrogen4m1391-FF (1391-PSV-009)NONONO71.5 pounds
1-Pentene4m1391-FF (1391-PSV-009)NONOYES0.8 pounds
2-Methyl-1-Butene4m1391-FF (1391-PSV-009)NONOYES2.4 pounds
Benzene4m1391-FF (1391-PSV-009)NONOYES5.4 pounds
n-Butane4m1391-FF (1391-PSV-009)NONONO3.3

Accident Classified As: Reportable Quantity

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