ENTERPRISE PRODUCTS OPERATING LLC — Gas transmission and gathering — incident on 2017-11-11

Gas transmission and gathering incident in LEAKEY, REAL County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 3790 NATURAL GAS released, $0 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: 20170117.

Operator ID: 31618.

Reported incident date: 11/11/2017 20:30.

Location detail: 8687+62

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: ON 11/11/17 AT 7:20 PM, GAS CONTROL RECOGNIZED THAT THE SUCTION PRESSURE WAS INCREASING ON UNIT 200 COMPRESSOR AND DISPATCHED OPERATIONS. THE TECHNICIAN ARRIVED AT 9:00 PM AND DETERMINED THAT THE CAT ENGINE PROGRAMMING ON UNIT 200 FAILED CAUSING THE UNIT TO SHUTDOWN AND LEAVING THE SUCTION VALVE ON UNIT 200 OPEN AND RELEASING GAS TO ATMOSPHERE THRU THE 2 INCH ENGINE BLOWDOWN STACK. OPERATIONS REPROGRAMED THE CPU AND AT 10:30 PM ON 11/11/17 RETURNED UNIT 200 BACK INTO SERVICE. AT APPROXIMATELY 10:15 PM IT WAS CALCULATED THAT THE AMOUNT OF NATURAL GAS VENTING THRU THE 2 INCH VALVE WAS APPROXIMATELY 3.79 MMSCF. THE NRC AND RRC (#16666) WERE IMMEDIATELY NOTIFIED. ON 11/13/2017 AT 4:54 PM, ENTERPRISE PROVIDED A 48 HOUR UPDATE TO THE NRC (#1197219).

PHMSA trend classification: not significant, not serious.

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

PHMSA indexed costs: $12,070 reported total cost, $11,368.557 in 1984 dollars, $14,079.583 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.