TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 31.77656, -93.14300 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
TENNESSEE GAS PIPELINE (TGP) EMPLOYEES WERE TAKING DISCHARGE PIPING OUT OF SERVICE AT THE TGP NATCHITOCHES COMPRESSOR STATION (STATION 40) MAY 17, 2013 IN ORDER TO PREPARE FOR IMP HYDROSTATIC TESTING. THE EMPLOYEES FAILED TO ISOLATE A RELIEF VALVE DURING THE DEPRESSURIZATION SUCH THAT WHEN THE RELIEF VALVE'S SENSING LINE LOST PRESSURE, THE RELIEF VALVE ACTIVATED AS IT WAS DESIGNED TO DO. THE RELIEF VALVE RELEASED NATURAL GAS TO THE ATMOSPHERE IN A VOLUME THAT EXCEEDED THE INCIDENT REPORTABILITY LEVEL OF 3,000 MCF. UPON HEARING THE NOISE OF THE RELEASE, THE RELIEF VALVE'S ISOATION VALVE WAS CLOSED TO STOP THE RELEASE. THE RELIEF WAS RESET FOR NORMAL OPERATION.
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.