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Shell Chemical East (26336), Norco

LDEQ Accident Report

Accident #154254
State Police #14-00970
Accident Date2014-03-04
Report Date 2014-03-06
Follow-up Date 2014-05-01
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Carbon Monoxide14hOP-1NOYESNO5,842.0 pounds
Nitrogen Oxide14hOP-1NOYESYES1,074.0 pounds
Particulate Matter14hOP-1NOYESNO202.0 pounds
Volatile Organic Compounds (VOCs)14hOP-1NONOYES673.0 pounds
Benzene14hOP-1NONOYES4.0 pounds
Carbon Dioxide14hOP-1YESNONOBRQ

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Equipment Failure

On 3/4/2014, Shell Chemical's OP-1 Unit flared process gas at the GO1 Elevated Flare due to low lube oil pressure on the process gas compressor (PGC). The main lube oil pump for the PGC had a mechanical failure and unexpectedly shutdown, resulting in the shutdown of the PCG.

Discharge Preventable - No

The mechanical failure of the PGC was sudden and unexpected.

Notes/Remedial Actions

Immediately, feed was safely removed from the OP-1 PGC and once the failure was identified, the feed was removed from the OP-1 furnace to repair the PGC. To prevent the recurrence of this incident, the failed mechanical components of the affected lube oil system of the PGC were repaired and the OP-1 Unit was safely restarted and returned to normal operation on 3/14/2014.