TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 27.74840, -97.85690 |
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 3/1/18 AT APPROXIMATELY 7:31 PM A COMPRESSOR ON UNIT 2 IN THE COMPRESSOR BUILDING HAD AN ISSUE WHEREBY THE COMPRESSOR ROD PACKING BEGAN LEAKING CAUSING THE GAS DETECTOR TO SENSE 40% LEL WHICH INITIATED A STATION HAZARD ATMOSPHERE ALARM AND CAUSED EMERGENCY SHUT DOWN (ESD). AT 8:00PM AN ERL CALL WAS SENT OUT. AT 8:03 LOCAL OPERATING PERSONNEL IDENTIFIED THAT THE STATION ESD VALVE WAS STILL VENTING GAS BEYOND THE TYPICAL STATION BLOW DOWN TIME. UPON FURTHER INVESTIGATION PERSONNEL FOUND THAT STATION DISCHARGE VALVE (A2-D1) DID NOT FULLY CLOSED AS REQUIRED WITH AN ESD EVENT. PERSONNEL IDENTIFIED THAT THE SUPPLY GAS TUBING TO THE STATION DISCHARGE VALVE'S ACTUATOR CAME DISLODGED DURING THE INITIATION OF THE ESD PROCESS WHICH PREVENT THE FULL CLOSURE OF THIS VALVE. PERSONNEL ISOLATED THE SUPPLY GAS AND THEN RECONNECTED IT TO THE ACTUATOR. ONCE RECONNECTED THE GAS SUPPLY WAS OPENED AGAIN AND THE STATION DISCHARGE VALVE CLOSED AS REQUIRED. THIS STOPPED THE VENTING OF NATURAL GAS FROM THE STATION'S ESD VALVE.
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.