TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 37.91710, -83.98560 |
Cause
| Cause | OTHER INCIDENT CAUSE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
INCIDENT DESCRIPTION: RELIEF VALVE ('RV') 800 BD5 LIFTED PREMATURELY AT STATION 106 COMPRESSOR STATION ON MAY 15, 2015. RV LIFTED AT 748 PSIG AND DID NOT RE-SEAT. EVENT DURATION WAS 7 MINUTES UNTIL KMI ON-SITE OPERATIONS CLOSED THE VALVE UNDER THE RV TO STOP THE VENTING. THE INCIDENT RESULTED IN A TOTAL OF 5,321 MCF OF GAS LOSS. MAOP OF THE STATION FACILITIES WAS NOT EXCEEDED DURING THE INCIDENT. IMMEDIATE ACTION TAKEN: THREE COMPRESSOR UNITS WERE TAKEN OFF LINE, THE RV WAS ISOLATED, TO STOP THE VENTING OF GAS AND UNIT WAS PROMPTLY REPAIRED. TGP FOUND DEBRIS FOULING THE RELIEF VALVE EXTERNAL CONTROL BOX WHICH ALLOWED THE RELIEF VALVE TO OPEN PRIOR TO THE ESTABLISHED SET POINT. TGP WILL INCREASE THE FREQUENCY OF MAINTENANCE ON THE PILOT CONTROL TO EVALUATE THE LEVEL OF DEBRIS ACCUMULATION ON THE STATION YARD RVS INITIALLY. TWO OUT-OF-CYCLE INSPECTIONS ON EACH STATION YARD RV PILOT CONTROLS WILL BE COMPLETED TO EVALUATE THE LEVEL OF DEBRIS ACCUMULATION BEING EXPERIENCED AND TO DETERMINE WHETHER INCREASED INSPECTIONS ARE WARRANTED.
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.