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Motiva Enterprises (1406), Norco

LDEQ Accident Report

Accident #83649
PDF AvailablePDF
State Police #05-07995
Accident Date2005-10-29
Report Date 2005-12-02
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
Nitrous Oxide19 h 29 mUnit Main Air Blower, RCCU Flare (EPN 8-84)YESYESYES371.0 pounds
Sulfur Dioxide19 h 29 mUnit Main Air Blower, RCCU Flare (EPN 8-84)NOYESNO3,991.0 pounds
Carbon Monoxide19 h 29 mUnit Main Air Blower, RCCU Flare (EPN 8-84)NOYESNO2,125.0 pounds
Particulate Matter19 h 29 mUnit Main Air Blower, RCCU Flare (EPN 8-84)NOYESNO43.0 pounds
Volatile Organic Compounds (VOCs)19 h 29 mUnit Main Air Blower, RCCU Flare (EPN 8-84)NONOYES1,040.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Equipment Failure

RCCU experienced instrument protective function shutdown activation of the unit's MAB just prior to the release. There was low oil pressure detected, therefore the MAB shut down automatically. The RCCU is dependent on the MAB for functioning.

Discharge Preventable - No

Notes/Remedial Actions

Following the release, all units were secured and steps were taken to minimize emissions to flare resulting from the release. To prevent recurrence, analysis of the dynamics of the MAB lube oil system will take place in addition to implementing mechanical improvements such as: Relocation of pressure transmitters on MAB turbine, reduction of trim on P-7035 governor valve, installation of a time delay in the ICS trip logic for MAB machine, replacement of bearing oil regulation during the next RCCU turnaround, and installation of a new control oil regulator during the next RCCU turnaround.