COLUMBIA GAS TRANSMISSION, LLC
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | COLUMBIA GAS TRANSMISSION, LLC |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 38.84864, -79.37610 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
ON JANUARY 10, 2019, AT 12:59 PM WHILE SETTING UP THE VALVE INDICATION, AN ELECTRICAL SHORT OCCURRED THAT CAUSED A RAPID DEGRADATION OF AN ELECTRICAL FUSE THAT WAS LINKED TO THE ESD SYSTEM. THIS NEW VALVE (NUMBER C7-273) WAS INSTALLED AS PART OF 2018-2019 WBX PROJECT. THE BLOWN FUSE CAUSED THE STATION TO ACTIVATE THE EMERGENCY SHUTDOWN SYSTEM (ESD). AFTER A PROLONGED BLOW DOWN, IT WAS DISCOVERED THAT VALVE 3029(STATION FIRE VALVE) DID NOT OPERATE/CLOSE. A PRELIMINARY INVESTIGATION INDICATED THE VALVE DID NOT CLOSE DUE TO ICE BUILDUP IN THE ACTIVATION SWITCH. BECAUSE VALVE 3029 DID NOT CLOSE DURING THE ESD, AN EXCESSIVE AMOUNT OF GAS WAS EVACUATED. GAS LOSS WAS APPROXIMATELY 14,230 MCF. NO FIRE OR EXPLOSIONS, DEATHS, INJURIES OR EVACUATIONS OCCURRED AS A RESULT OF THE RELEASE. GAS WAS RELEASE THROUGH DESIGNED ESD BLOW-OFF STACKS/PIPES TO THE ATMOSPHERE.
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.