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Shell Chemical East (26336), Norco

LDEQ Accident Report

Accident #156193
State Police #14-02264
Accident Date2014-05-23
Report Date 2014-05-30
Follow-up Date 2014-06-06
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Butane1d 21h 20mNONOYESBRQ
Propane1d 21h 20mNONOYESBRQ
Hydrogen Sulfide1d 21h 20mNONONOBRQ
Benzene1d 21h 20mNONOYESBRQ

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Process Upset

On May 23, 2014, Motiva's DU-5 unit unexpectedly had the relief valve on their Debutanizer Accumulator, part of the Debutanizer Overhead System, relieve to Shell Chemical's Utilities East Elevated Flare (FE-501). The relief valve lifted as a result of an accumulation of hydrocarbons in the Debutanizer Overhead System.

Discharge Preventable - No Information Given

Notes/Remedial Actions

Unit pressure and feed levels were safely diminished to conform to standards. 6/6/14 report states that no reportable quantities were exceeded.