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Shell Chemical East (26336), Norco

Releases of Hydrogen

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
137608

2012-02-29		OL-5 Elevated Flare (EPN 6-84)
Cause: Shell Chemical's OL-5 Unit's Converter and Product Hydrogen Methanators shutdown due to a high level in the crude hydrogen drum. This led to flaring of unmethanated hydrogen at the OL-5 Elevated Flare (EPN 6-84).

Followup: No

Notes: The crude hydrogen level was lowered. The methantators were safely returned to normal conditions and flaring was stopped. Initial report states there was offsite impact.
152570

2013-11-24		level control valve in the de-methanizer system
level control valve
Cause: On November 24, 2013, Shell Chemical's OL-5 operations discovered a packing leak on a level control valve in the de-methanizer system of the OL-5 Process Unit.

Followup: No

Notes: Operations took immediate action to mitigate the leak and have repairs made to the valve.