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Phillips 66 (2418), Belle Chasse

LDEQ Accident Report

Accident #94025
State Police #07-00572
Accident Date2007-02-07
Report Date 2007-02-14
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
Sulfur Dioxide26mFLARE - 308F-D-1 Low Pressure FlareNOYESNO646.9 pounds
Hydrogen Sulfide26mFLARE - 308F-D-1 Low Pressure FlareNONONO6.5 pounds
Nitrogen Dioxide26mFLARE - 308F-D-1 Low Pressure FlareNOYESYES8.3 pounds
Hydrocarbon26mFLARE - 308F-D-1 Low Pressure FlareNONOYES79.9 pounds

Accident Classified As:

Cause of Problem: Equipment Failure

A 34.5KV lightning arrestor failed near breaker W5305 (Carlisle #1 Line Bus, and an insulator failed on the disconnect switch on the other side of breaker W5305 (ConocoPhillips # 2 Line Bus). ConocoPhillips Alliance breakers W5305, W5301, W5304 tripped along with Carlisle W6922 breaker. All of these de-energized ConocoPhillips #2 Line to the plant leading to the Coker Compressor to trip off the line. The compressors suction stream was automatically diverted to the Low Pressure Flare (308F-D-1) during the emergency shutdown of the compressor.

Discharge Preventable - No

It was considered an unexpected mechanical function.

Notes/Remedial Actions

Three arrestors on breaker W3505 were replaced, as well as a failed insulator. Preventive measures are in place, but incidents of this type could not be anticipated by the prevention measures. A further investigation to discover the root cause of the malfunctions is ongoing.