ENABLE GAS TRANSMISSION, LLC
gas_transmission Incident — — May 24, 2018
Incident Information
| Incident Date | May 24, 2018 |
| Operator | ENABLE GAS TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.69194, -100.22752 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $500 |
| Emergency Response | $500 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON MAY 24, 2018 AT 04:15 AN ENABLE O&M TECH WAS NOTIFIED BY PERSONNEL AT THE WOODALL PLANT THAT A RELIEF VALVE WAS GOING OFF ON LINE AD-23 IN HEMPHILL COUNTY, TEXAS. THE O&M TECHNICIAN ARRIVED AT THE METER STATION LOCATION AT 04:49 AND BACKED OFF THE RELIEF VALVE, LOCKED IT OUT, AND RESET IT. THE EVENT WAS COMPLETE AT 06:15. APPROXIMATELY 13.5 MMCF OF NATURAL GAS WAS RELEASED. NO INJURIES, NO DAMAGE TO COMPANY PROPERTY. NRC WAS NOTIFIED ON 5/24 (#1213124) AND A 48 HR. FOLLOW UP ON 5/25 (#1213192). UPON INVESTIGATION THE O&M TECHNICIAN DETERMINED THE SETPOINT (971 [PSIG) OF THE RELIEF VALVE HAD SHIFTED CAUSING THE RELEASE. THE RELIEF WAS RESET TO THE PROPER SETPOINT (999 PSIG) AND THE RELIEF WAS PLACED BACK INTO SERVICE. PRIOR TO THE INCIDENT, THE RELIEF VALVE WAS LAST INSPECTED IN JULY 2017.
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.