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Shell Facility (3462), St. Rose
Releases of Sulfur Dioxide
| LDEQ Accident Number Accident Date |
Point Source(s) | Notes | Amount of Release |
| 81720, 81957, 83713 2005-08-28 | 7-84 (OL-5 Ground Falre, FG-101); 6-84 (OL-5 Elevated Flare, FE-101); 1-90 (GO-1 Elevated Flare, FE602); 3-84 (Utilities East Flare, FE 501) | Cause: Due to shutdown and damages associated with Hurricane Katrina Followup: Notes: The most significnt point source emissions were from the Elevated flare. The report does not include emissions from tanks, HCU Flare, Emergency Bypass Outfall and other equipment that was previously reported. | 90,046.0 pounds |
| No LDEQ Reported 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 | 1.5 pounds |
| No LDEQ Reported 2006-02-12 | GO-1 Elevated Flare | Cause: In order to control the differential pressure, untreated dry gas was sent to the fuel gas system and the remaining amount was flared. Followup: No Notes: Incident involving the DEA treatment system is the subject of an ongoing investigation. Corrective actions will be implemented. | 1,587.0 pounds |
| No LDEQ Reported 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 | 502.0 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. | 8.0 pounds |
| 98478 2007-06-03 | Tank TK-8552 5-77 St. Rose Flare Tank TK-8553 | Cause: During a crude tank switch there was a unit upset when water and emulsion from a feed tank was introduced into the process, leading to the over pressuring of a de-salter vessel to the flare, a spill of water and emulsion to the water treatment facility and the shutdown of the compressor with additional flaring. During this unit upset tanks TK-8552 and TK-8553 roof legs inadvertently landed on the floor Followup: No Notes: Initial written report issued 6/20/07 but investigation revealed additional vent streams were routed to the flare so the numbers were updated on 8/14/07. To prevent this the water in the crude oil tank should have been drained prior to being placed in service. The crude tank was switched back to prevent further water and emulsion from being fed into the unit. Necessary steps were taken to clean up the wastewater treatment facility & return unit to normal. Tanks TK-8552 and TK-8553 were refilled to their normal levels. In the future, the water in the crude tank will be drained before the tank is placed into service | 513.0 pounds |
| No LDEQ Reported 2008-09-20 | 5-77 (St. Rose Flare) | Cause: Loss of steam pressure when a tube failed in the boiler resulting in flaring Followup: No Notes: The boiler tube failure could not be predicted. Shut the process unit down until boiler repairs could be completed. The incident will be investigated and appropriate corrective actions will be implemented to prevent reoccurrence | 75.0 pounds |
| No LDEQ Reported 2008-08-25 | 5-77 (St. Rose Flare) | Cause: Lost power to controls for crude column overhead fans and Uninterruptable Power Supply backup ran out of batteries. Fans shut down leading to necessity of shutdown of the unit and flaring Followup: No Notes: The process unit was stablized until an electrician could resote control power to the fans. Once power was restored the equipment was restarted and the unit safely returned to normal conditions. The incident will be investigated and any appropriate corrective actions will be implemented to prevent reoccurrence. Report said it was preventable but did not say why or how. The cover letter/narrative (referencing the verbal notification) mentioned that naphtha and smoke were released, but these were not mentioned elsewhere in the report | 11.9 pounds |
| No LDEQ Reported 2008-07-17 | 5-77 (St. Rose Flare) | Cause: A bearing failed on the vent gas compressor for the vacuum unit. Followup: No Notes: The bearing failure was not predictiable. The compressor was shut down and a valve to the St. Rose flare was opened to lower and control the seal drum pressure. The compressor was replaced with a spare and the unit was returned to normal operating conditions. The spare will be replaced with the repaired compressor during the next unit outage | 4.2 pounds |
| No LDEQ Reported 2008-04-13 | 5-77 (St. Rose Flare) | Cause: Power interruption caused by fire at Entergy substation feeding the plant. Lead to shutdown of plant and flaring. Followup: No Notes: The power interruption from Entergy was not foreseeable and the equipment was restarted once power was returned. The incident will be reviewed with Entergy and any appropriate corrective actions will be implemented to prevent reoccurrence | 1.0 pounds |
| No LDEQ Reported 2008-04-08 | 5-77 (St. Rose Flare) | Cause: Maintenance activities on the uninterruptible power supply (UPS) led to an interuption in power due to a loose connection in the UPS. Several pieces of equipment shut down and there was flaring Followup: No Notes: The incident occurred during routine maintenance activity on the UPS and the loose connection in the UPS was not expected. The equipment was restarted once power was returned. The incident will be investigated and corrective actions will be implemented appropriately to prevent reoccurence | 3.3 pounds |
| No LDEQ Reported 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. | 3.0 pounds |
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