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Shell Facility (3462), St. Rose
Causal Factor: Power Failure
| LDEQ Accident Number Accident Date |
Point Source(s) | Notes | Amount of Release |
| 89447 2006-07-24 | St. Rose Flare | Cause: Unexpected failure of Entergy power supply resulting in flaring material from the crude column overhead system Followup: No Notes: Improvements to power supply are current project | Benzene: 0.1 pounds Carbon Monoxide: 14.3 pounds Nitrogen Oxide: 2.6 pounds Particulate Matter: 0.5 pounds Sulfur Dioxide: 1.5 pounds Toluene: 0.0 pounds Volatile Organic Compounds: 11.2 pounds Xylene: 0.0 pounds n-Hexane: 0.7 pounds |
| No Information Given 2006-07-02 | St. Rose Flare | Cause: Electrical power dip which led to a pump shutdown and causing the de-salter to overpressure resulting in a pressure relief valve opening up and material vented to the flare Followup: No Notes: Pump restarted. Improvements to power supply are current project | 1,3-Butadiene: 0.0 pounds Benzene: 0.0 pounds Carbon Monoxide: 48.0 pounds Ethylbenzene: 0.0 pounds Hexane: 0.4 pounds Nitrogen Oxide: 9.0 pounds Particulate Matter: 1.7 pounds Toluene: 0.1 pounds Volatile Organic Compounds: 6.5 pounds Xylene: 0.1 pounds |
| 88859 2006-06-24 | St. Rose Flare | Cause: Unexpected failure of the Entergy power supply which resulted in the shutdown of the K-8508 compressor. When the compressor shut down, material was automaticallydiverted to flare Followup: No Notes: Unit was depressured until the power was restored. Improvement in the St. Rose electrical supply are subject of a current project. | Carbon Monoxide: 0.7 pounds Nitrogen Oxide: 0.1 pounds Particulate Matter: 0.0 pounds Volatile Organic Compounds: 0.1 pounds |
| 99717 2007-09-24 | 5-77 (St. Rose Flare) | Cause: Power failure allowed two pressure relief valves to open to the flare to prevent over-pressuring of the unit Followup: No Notes: The power failure was unexpected. They secured the process unit until the power was restored. Electrical support will work with the energy supplier to understand what caused the failure and take appropriate corrective action to prevent reoccurence. Word for word what happened the prior month | Benzene: 10.4 pounds Carbon Monoxide: 5,128.0 pounds Ethylbenzene: 1,000.2 pounds Hexane: 5,001.2 pounds Nitrogen Oxide: 34.0 pounds Particulate Matter: 5,004.0 pounds Sulfur Dioxide: 502.0 pounds Toluene: 100.9 pounds Volatile Organic Compounds: 5,077.0 pounds Xylene: 101.2 pounds |
| 98868 2007-08-23 | EPN 5-77 St. Rose Flare | Cause: Power failure allowed two pressure relief valves to open to the flare to prevent over-pressuring of the unit Followup: No Notes: The power failure was unexpected. They secured the process unit until the power was restored. Electrical support will work with the energy supplier to understand what caused the failure and take appropriate corrective action to prevent it from reoccurring. | Xylene: 101.0 Toluene: 1.2 pounds Hexane: 1.5 pounds Xylene: 1.7 pounds Ethylbenzene: 0.3 pounds Benzene: 0.6 pounds Volatile Organic Compounds (VOCs): 78.0 pounds Particulate Matter: 4.0 pounds Sulfur Dioxide: 8.0 pounds Nitrogen Oxide: 21.0 pounds Carbon Monoxide: 12.0 pounds |
| 102066 2008-01-03 | 5-77 (St. Rose Flare) | Cause: Power failure lead to unit shutdown, resulting in a unit upset and flaring Followup: No Notes: Power failure was caused by Entergy and was unplanned. All heavy product lines were flushed with a diesel driven flush pump. Incident will be reviewed with Entergy to discuss what happened and what can be done to prevent recurrence. | Benzene: 0.3 pounds Carbon Monoxide: 73.0 pounds Ethylbenzene: 0.2 pounds Hexane: 0.8 pounds Nitrogen Oxide: 13.0 pounds Particulate Matter: 2.5 pounds Sulfur Dioxide: 3.0 pounds Toluene: 0.7 pounds Volatile Organic Compounds: 40.0 pounds Xylene: 0.9 pounds |
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