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Accident # | 83924 |
State Police # | 05-08257 |
Accident Date | 2005-11-17 |
Report Date | 2005-11-23 |
Follow-up Date | 0000-00-00 |
Follow-up: | Yes |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Hydrogen Sulfide | 43m | Hydrodesulphurization (HDS) Unit Fans | NO | NO | NO | 274.0 pounds |
Oil | 43m | Hydrodesulphurization (HDS) Unit Fans | NO | NO | NO | 2,765.0 pounds |
Sulfur Dioxide | 43m | Hydrodesulphurization (HDS) Unit Fans | NO | YES | NO | 783.0 pounds |
Volatile Organic Compounds (VOCs) | 43m | Hydrodesulphurization (HDS) Unit Fans | NO | NO | YES | 3,681.0 pounds |
Volatile Organic Compounds (VOCs) | 43m | Hydrodesulphurization (HDS) Unit Fans | NO | NO | YES | 9.3 pounds |
Accident Classified As: Below Reportable Quantity (BRQ)
Leak on the HDS Unit fans caused spill to the ground. Emissions resulted from the spill to the ground, the release to the atmosphere and from the unit de-pressure to the No. 2 flare.
This release is not considered to be preventable at this time.
At approximately 04:07 hours on 11/17/05, refinery personnel discovered a leak on the Hydrodesulphurization (HDS) Unit fin-fans. Approximately 9.3 barrels of Distillate range material spilled to the ground. Emissions resulted from the spill to the ground, the release to the atmosphere, and from the unit de-pressure to the no. 2 flare. Chalmette Refinery rescinded the 11/17/05 notifications for NO, NO2, VOC, SO2 and H2S since the estimated amounts were less than the reportable quantity of 10lbs. They estimate that approximately 1.93 and 0.21 pounds of Nitric Oxide (NO) and Nitrogen Dioxide (nO2), respectively, were released to the atmosphere during the 11/17/05 event. Therefore, notification for Nitrous Oxides (NOx) was not required. Calculations performed after the incident indicated that a greater than reportable quantity of oil was spilled to the ground during this incident, and as such, emissions calculations for the oil spill are included in the follow-up report. Hydrogen Sulfide and Compressed Flammable Gas/Non-speciated VOCs released to atmosphere through the leak; Sulfur Dioxide and compressed flammable gas/non-speciated VOCs released to atmosphere through the NO. 2 flare; oil spill to ground with VOC volatilization to atmosphere. The HDS Unit was shutdown and de-pressured to the no. 2 flare to minimize the impact of the leak. A pipe clamp was installed, stopping the leak. Liquid released from the leak was contained and recovered. Soils that appeared to have come in contact with spilled slop oil were removed for off site disposal.
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