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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 87870 |
| State Police # | 06-03032 |
| Accident Date | 2006-05-16 |
| Report Date | 2006-05-22 |
| 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 |
| Propane | 144h | D-104 Hydrocracker | NO | NO | YES | 509.0 pounds |
| Butane | 144h | D-104 Hydrocracker | NO | NO | YES | 132.0 pounds |
| Butane | 144h | D-104 Hydrocracker | NO | NO | YES | 204.0 pounds |
| Pentane | 144h | D-104 Hydrocracker | NO | NO | YES | 19.0 pounds |
| Isopentane | 144h | D-104 Hydrocracker | NO | NO | YES | 105.0 pounds |
| Hydrogen | 144h | D-104 Hydrocracker | NO | NO | NO | 549.0 pounds |
| Water | 144h | D-104 Hydrocracker | NO | NO | NO | 21.0 pounds |
| Hydrogen Sulfide | 144h | D-104 Hydrocracker | NO | NO | NO | 482.0 pounds |
| Ammonia | 144h | D-104 Hydrocracker | NO | NO | NO | 50.0 pounds |
| Benzene | 144h | D-104 Hydrocracker | NO | NO | YES | 2.0 pounds |
| Methane | 144h | D-104 Hydrocracker | YES | NO | YES | 1,344.0 pounds |
| Ethane | 144h | D-104 Hydrocracker | NO | NO | YES | 674.0 pounds |
| Flammable Vapor | 144h | D-104 Hydrocracker | NO | NO | YES | 4,131.0 pounds |
| Volatile Organic Compounds (VOCs) | 144h | D-104 Hydrocracker | NO | NO | YES | 40.0 pounds |
Accident Classified As:
Cause of Problem: Other
the clamp on the Hydrocracker D-104 overhead line was leaking. The pressure of the overhead gas was reduced and several attempts were made to reseal the clamp, including trying several different kinds of sealant. The leak would stop for a short durationand then return
Discharge Preventable - No
Notes/Remedial Actions
As of 7:30am on 5/22/2006 - the date of this letter - the leak was ongoing. In this letter, Exxon claims states that the reportable quantities for hydrogen sulfide and flammable vapor were exceeded only during the first 24 hours of the incident. This incident was not preventable because the clamp was considered to be a permanent repair (installed in Dec. 2005) until the scheduled unit downtime in 2008. Remedial Measures- a larger engineered clamp will be installed over the existing clamp. "
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