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Chalmette Refining (1376), Chalmette
LDEQ Accident Report
| Accident # | 76795 |
| State Police # | 05-00877 |
| Accident Date | 2005-02-07 |
| Report Date | 2005-02-10 |
| 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 |
| Carbon Monoxide | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | YES | NO | 545.0 pounds |
| Hydrocarbon | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | NO | YES | 345.0 pounds |
| Hydrogen Sulfide | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | NO | NO | 1.0 pounds |
| Nitric Oxide | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | YES | NO | 90.0 pounds |
| Nitrogen Dioxide | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | YES | YES | 10.0 pounds |
| Sulfur Dioxide | 2h 12m | Unintended over pressurization of the Hydrocracker Light Ends Plant (HCU LEP) Depropanizer surge drum | NO | YES | NO | 401.0 pounds |
Accident Classified As: Reportable Quantity
Cause of Problem: Human Factors
Due to the isolation of the sight glass of the hydrocracker light ends plant depropanizer, the automatic level indication equipment was disabled and false reading was transmitted; this condition caused an unintended over pressurization of the HCU LEP Depropanizer surge drum, which was venter to the refinery flare system (No. 2 flare)
Discharge Preventable - Yes
Notes/Remedial Actions
Refinery personnel evaluated the process operation, identified the source of the problem and made appropriate corrections, ending the incident.
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