ENTERPRISE PRODUCTS OPERATING LLC — Gas transmission and gathering — incident on 2015-03-28

Gas transmission and gathering incident in GRANDBURY, HOOD County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 7450 NATURAL GAS released, $45,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20150053.

Operator ID: 31618.

Reported incident date: 3/28/2015 11:20.

Location detail: DECORDOVA

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: ON 3/28/2015 AT 07:20 AM, GAS CONTROL RECEIVED A CALL FROM A THIRD PARTY REPORTING A POSSIBLE LEAK AT THE DECORDOVA COMPRESSOR STATION AND AN ENTERPRISE TECHNICIAN WAS DISPATCHED TO THE DECORDOVA COMPRESSOR STATION. UPON THE TECHNICIANS ARRIVAL AT APPROXIMATELY 08:10 AM, THE TECHNICIAN DISCOVERED THAT THE UNIT SUCTION VALVE ON UNIT 810 DID NOT COMPLETELY CLOSE (90% CLOSURE) AT TIME GAS CONTROL REMOTELY SHUT DOWN COMPRESSOR (SCHEDULED SHUTDOWN). THE TECHNICIAN MANUALLY SHUT THE VALVE, THUS ENDING THE UNINTENTIONAL GAS THROUGH THE BLOW DOWN STACK. THE VALVE WAS TESTED SEVERAL TIMES AND FOUND TO BE FAULTY WITH WORN VALVE SEATS AND A BAD ACTUATOR. UNIT 810 HAS BEEN TAKEN OUT OF SERVICE UNTIL FURTHER NOTICE (LOCKED OUT-TAGGED OUT). A NEW VALVE AND ACTUATOR HAVE BEEN ORDERED FOR REPLACEMENT/REPAIR. ON 4/23/2015, NEW VALVE AND ACTUATOR INSTALLATION HAS BEEN COMPLETED.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.

PHMSA indexed costs: $64,125 reported total cost, $40,095.5 in 1984 dollars, $77,417.539 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.