PHMSA Report 20180048 - ENTERPRISE PRODUCTS OPERATING LLC — Gas transmission and gathering — incident on 2018-03-30 | Regulus

Gas transmission and gathering incident in GARDEN CITY, GLASSCOCK County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 13200 NATURAL GAS released, $3,500 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: 20180048.

Operator ID: 31618.

Reported incident date: 3/30/2018 21:45.

Location detail: 742+42

Cause detail: COMPRESSOR OR COMPRESSOR-RELATED EQUIPMENT

Cause detail: AT 2124 ON 3/30/2018, CONTROLLER TRIED TO REMOTE START A COMPRESSOR UNIT WITH NO RESPONSE. CONTROLLER TRIED TO START THE UNIT A SECOND TIME WITH NO RESPONSE AND DISPATCHED A TECHNICIAN. WHEN THE TECHNICIAN ARRIVED AT 2307, THE TECHNICIAN DISCOVERED THAT THE SUCTION VALVE TO THE UNIT WAS NOT FULLY CLOSED AND THAT NATURAL GAS WAS RELEASING FROM THE VENT VALVE ON THE UNIT. THE TECHNICIAN CLOSED THE VALVE AND THE RELEASE STOPPED. AT 0030 ON 03/31/2018, IT WAS ESTIMATED THAT 52.7 MMCF OF GAS WAS RELEASED AND THE NRC/TRRC WAS NOTIFIED. THE RELEASE ESTIMATE WAS REVISED TO 13.2 MMCF AFTER THE VALVE WAS FOUND TO BE PARTIALLY OPEN. TIME OF THE INCIDENT (PART A, #4) IS ESTIMATED BASED ON TOTAL RELEASE VOLUME. INSPECTION OF THE VALVE IDENTIFIED THE HARD STOPS WERE OUT OF ADJUSTMENT CAUSING THE VALVE TO NOT FULLY CLOSE. THE VALVE WAS REPAIRED AND TESTED PRIOR TO BEING RETURNED TO SERVICE. THE TRRC WAS NOTIFIED ON 3/31/2018 AT 0057 AND A 48 HOUR COURTESY UPDATE ON 04/01/2018 AT 1913. 48-HOUR NRC# 1208229 SUPPLEMENTAL NOTIFICATION WAS MADE 04/01/2018 AT 1905. 12/04/2018 UPDATE - ADDED MORE SIGNIFICANT FIGURES TO LAT/LONG TO PROVIDE MORE ACCURATE LOCATION OF INCIDENT.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — PUMP/COMPRESSOR OR PUMP/COMPRESSOR-RELATED EQUIPMENT.

PHMSA indexed costs: $40,200 reported total cost, $35,851.374 in 1984 dollars, $46,202.566 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.