ENABLE GAS TRANSMISSION, LLC
gas_transmission Incident — — December 24, 2021
Incident Information
| Incident Date | December 24, 2021 |
| Operator | ENABLE GAS TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 34.70942, -96.29772 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $500 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON 12/24/2021 A UNIT 1 VENT VALVE WAS DISCOVERED OPEN BY AN OPERATIONS EMPLOYEE AT THE CHILES DOME STORAGE FACILITY. THE VALVE WAS IMMEDIATELY CLOSED AND UPON INVESTIGATION IT WAS DETERMINED THAT A REPORTABLE RELEASE OF NATURAL GAS HAD OCCURRED. THE NRC WAS NOTIFIED (NRC# 1325220, 1325255) AND AN INVESTIGATION WAS INITIATED TO DETERMINE CAUSE. THE RELEASE OCCURRED WHILE THE STATION WAS INJECTING INTO THE STORAGE FIELD. AFTER FURTHER INVESTIGATION, THE VENT VALVE DID NOT CLOSE WHEN THE UNIT RESET, DUE TO THE CLOSE COMMAND BEING TURNED OFF IN THE PROGRAMMING. THE LIMIT SWITCH DID NOT CATCH THIS BECAUSE IT WAS OFF SEATED ON THE SUCTION VALVE SHOWING THE VALVE TO BE CLOSED WHEN IT WAS CRACKED OPEN. BOTH ISSUES WERE IMMEDIATELY CORRECTED AND WE HAVE PERFORMED SEVERAL STARTS ON THE UNIT AND EVERYTHING IS WORKING CORRECTLY.
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.