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Shell Chemical East (26336), Norco

LDEQ Accident Report

Accident #144282
PDF AvailablePDF
State Police #12-07101
Accident Date2012-10-30
Report Date 2012-11-06
Follow-up Date 2012-11-13
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Ethylene1d 10H 45mGO-1 and OL-5 Elevated FlareNONOYESBRQ
Nitrogen Oxide1d 10H 45mGO-1 and OL-5 Elevated FlareNOYESYESBRQ
Particulate Matter1d 10H 45mGO-1 and OL-5 Elevated FlareNOYESNOBRQ

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Process Upset

Shell Chemical's GO-1 Process Unit flared at the GO-1 Elevated Flare (EPN 1-90). The flaring was a result of an unexpected unit upset in GO-1 caused by the receiving of off specification feed from a supplier. Additionally, flaring occurred at the OL-5 Elevated Flare (EPN 6-84), caused by the same issue.

Discharge Preventable - No Information Given

Notes/Remedial Actions

Once the upsets occurred, GO-1 and OL-5 operations took the necessary steps to minimize flaring and safely return the units to normal operating conditions and the flaring stopped. Investigation and data gathering confirm that no RQ values or maximum permitted limits were exceeded.