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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #89401
State Police #No Information Given
Accident Date2007-07-05
Report Date 2006-07-14
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 Monoxide1hMotor Feed Pump on the No. 3 Fluid Catalytic Cracking UnitNOYESNO1,210.0 pounds

Accident Classified As:

Cause of Problem: Equipment Failure

pump failure. The main motor operated feed pump tripped off at the No. # Fluid Catalytic Cracking Unit. The turbine kicked in however failed to pump the rate required to keep the unit steady. As a result, the preheat furnace tripped due to low flow and the reactor temp. began to fall due to a lack of heat inpu

Discharge Preventable - No

Notes/Remedial Actions

This incident was not preventable because there were no indications that the motor pump would fail. Remedial Measures - mechanical personnel will evaluate the turbine system to determine if the feed surge caused by the turbine can be prevented. During the Upset, the MACT II hourly limit for carbon monoxide and the maximum hourly permit limit and the maximum hourly concentration limit for carbon monoxide from 63 CFR Subpart UUU were exceeded at the WGS.The failure of the feed pump is covered undhe unit's Startup, Shutdown, Malfunction Plan and is considered a malfunction. Likewise, the exceedance of the permit limit is considered an Upset pursuant to LAC 33:III.507.J. and thus ExxonMobil claims the Upset Provision affirmative defense pu