COLUMBIA GULF TRANSMISSION, LLC — Gas transmission and gathering — incident on 2014-11-28

Gas transmission and gathering incident in LIBERTY, CASEY COUNTY County, KY. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 16431 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: 20140141.

Operator ID: 2620.

Reported incident date: 11/28/2014 3:22.

Location detail: SHAFER ACT

Cause detail: COMPRESSOR OR COMPRESSOR-RELATED EQUIPMENT

Cause detail: AN 8-IN BLOW-OFF VALVE FAILED TO CLOSE AFTER INADVERTENTLY RELEASING FOR THE SECOND TIME MATERIAL INTO ATMOSPHERE. THE EMERGENCY SHUTDOWN WAS NOT ACTIVATED. IT WAS IDENTIFIED THAT THIS VALVE FAILED TO CLOSE DUE TO A SOLENOID VALVE HAD A SPRING THAT WAS IMPROPERLY SEATED. A ROOT CAUSE ANALYSIS INVESTIGATION IDENTIFIED THAT THE VALVE FAILED TO CLOSE THUS ALLOWING THE MATERIAL TO FLOW THROUGH THE VALVE UNTIL IT WAS CONTROLLED BY COMPRESSOR STATION PERSONNEL. A CHANGE TO THE PROGRAMMABLE LOGIC CONTROL SETTINGS WAS COMPLETED, TESTED THE SYSTEM AND THEN RETURNED INTO SERVICE. THE FACILITY WAS MONITORED TO ENSURE THAT THE SAME ERROR WILL NOT BE REGENERATED. NO FURTHER ISSUES WERE NOTED.

PHMSA trend classification: not significant, not serious.

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

PHMSA indexed costs: $60,138 reported total cost, $41,601.594 in 1984 dollars, $51,080.438 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.