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Shell Chemical East (26336), Norco

LDEQ Accident Report

Accident #148877
PDF AvailablePDF
State Police #13-02276
Accident Date2013-05-23
Report Date 2013-05-30
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
Carbon Monoxide12mWest Operations Elevated Flare (EPN 5-84)NOYESNO62.6 pounds
Nitrogen Oxide12mWest Operations Elevated Flare (EPN 5-84)NOYESYES11.5 pounds
Particulate Matter12mWest Operations Elevated Flare (EPN 5-84)NOYESNO4.6 pounds
Volatile Organic Compounds (VOCs)12mWest Operations Elevated Flare (EPN 5-84)NONOYES39.2 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Process Upset

On May 23, an upset in the Shell Chemical's OP-1 process unit led to flaring at the West Operations Elevated Flare (EPN 5-84). The flaring was due to a high level in the Ethylene Refrigeration Compressor causing the compressor to shut down unexpectedly.

Discharge Preventable - Yes

Notes/Remedial Actions

OP-1 operations took the necessary steps to minimize flaring, restart the compressor and safely return the unit to normal operation conditions. Operation's support will provide additional guidance and operational measures to be more effective in controlling levels and restoring normal operations after a compressor shutdown. States that no reportable quantities were exceeded, but the maximum permit limits for carbon monoxide, nitrogen oxide, particulate matter, and VOCs were exceeded.