Home Search Emissions Pollutants About the Database

Chalmette Refining (1376), Chalmette

Causal Factor: Other - See text

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
No LDEQ Reported

motor oil storage container
Cause: A one gallon plastic container of motor oil was being stored in a wooden storage box. A steel flange had been placed on the container of motor oil, damaging the container and resulting in a release of motor oil to the box, which then dripped into the River causing a localized sheen.

Followup: Yes

Notes: This is a follow-up report BELOW REPORTABLE QUANTITIES. The storage box was emptied and absorbent material was spread on the dock. Hard boom was deployed in order to capture the sheen. Absorbent materials were used in order to clean up the sheen and residual oil. This is a letter rescinding the 8/24/05 notification. Upon further review, the event that prompted the call was not a reportable incident. the total amount of motor oil released is estimated to be less than the reportable quantity (RQ=1 barrel). Chalmette Refining estimates that approximately 0.01 barrels (0.5 gallons) of motor oil was released to the surface of the Mississippi River. No chronic or acute health risks are anticipated as a result of this release. The release did not cause an emergency condition. While the incident did not meet reporting requirements, they would like to note that thy take this situation seriously and have taken the proper measures to prevent a reoccurrence. Motor oil released from a one-gallon motor oil container, dripped to the Mississippi River causing a localized sheen.
Motor Oil: 0.5 gallons

No information given
Cause: NOx was flared so that maintenance could be done on a vessel.

Followup: No

Notes: Initial report states that there was no release of NO to the atmosphere, and thus it was not reportable.


#1 Flare
Cause: The flare gas management compressors tripped due to high molecular weight and staged the #1 Flare intermittently for 5.02 hours. Sulfur Dioxide was released to the air. Incident was caused by the Number 2 Coker Unit Naptha Splitter overhead safety relief valve relieving to the FGM compressors causing the shutdown.

Followup: Yes

Notes: Started the third FGM compressor and added hydrogen to the flare to decrease the molecular weight to expedite the FGM compressors recovery. FGM compressors water seals were also re-inventoried with fresh water. PSV was sent out for maintenance, retested and calibrated.
Sulfur Dioxide: 3,696.0 pounds

underground line near sour water stripper area
Cause: An abandoned gas oil line that runs from Tank 33 to the old FCC unit was leaking from an underground line near the sour water stripper area and discharged approximately 10 gallons to the ground surface prior to identifying the leak.

Followup: Yes

Notes: A vacuum truck was deployed to pick up the material discharging from the pipe to minimize the environmental impact until the line could be isolated. The leaking valve was immediately isolated when it was determined to be the source of the leak and the line was depressured and emptied. The line will be flushed and decommissioned.
Gas Oil: 42.0 gallons
No LDEQ Reported

Sulfur Recovery Unit Thermal Oxidizer
Cause: Tail Gas incident due to Sulfur Recovery Unit Train 1 being shut down due to low refinery acid gas production following unscheduled outages of the No.2 Coker and the Cat Feed Hydrotreater. the Sulfur Recovery Unit on Train 2 was forced to switch to combustion air-mode to avoid the possibility of acid flaring.The temperature of the Sulfur Recovery Unit Train 2 No.1 Converter dropped ue to uncombusted pit vapors, resulting in an increase in Sulfur Dioxide from the Thermal Oxidezer

Followup: No

Notes: - Refresher training has been conducted with increased emphasis on the importance of monitoring the No. 1 Converter temperature during train transitions to combustion air with pit vapor to prevent recurrence. - Procedure to switch from O2-mode to air-mode was modified to ensure temperature is adequate to handle pit vapors on air-mode. - MDEA lean loading field testing will now include upgraded analysis procedures and will be moved from the field to the lab. - Evaluate project to operate Sulfur Recovery Units in partial O2-enrichment mode to reduce environmental vulnerability.
Sulfur Dioxide: 1,150.8 pounds