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Shell Facility (3462), St. Rose
Releases of n-Hexane
| LDEQ Accident Number Accident Date |
Point Source(s) | Notes | Amount of Release |
| 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 | 0.7 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 | 4.6 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 | 1.1 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 | 0.7 pounds |
| 151683 2013-10-17 | tank 8553 | Cause: On October 16, 2013 at 1600 hours, the St. Rose operators discovered that a naphtha tank, Tank 8553, transferring naphtha landed on the roof legs. The radar gauge that was being used to monitor the level was believed to have been reading incorrectly; approximately 3 feet higher than the level should have been reading. Followup: Yes Notes: Once the operators discovered that the tank landed on the roof legs, the transfer from Tank 8533 was immediately stopped, and product was allowed to gravitate back into the tank until the roof was floated off the legs. Currently, an investigation is occurring. The results from this investigation will be incorporated, where applicable, to prevent recurrence. | 12.3 pounds |
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