TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — January 7, 2017
Incident Information
| Incident Date | January 7, 2017 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.84798, -87.44986 |
Cause
| Cause | NATURAL FORCE DAMAGE |
| Subcause | TEMPERATURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $300 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON JANUARY 7, 2017 AT 3:43 PM TGP CENTERVILLE STATION 860 EXPERIENCED AN ESD DUE TO ACTIVATION OF A UVIR DETECTOR IN ""A"" COMPRESSOR BUILDING WHEN A SMALL AMOUNT OF GLYCOL LEAKING ON THE SPARK PLUG PORTS IGNITED BRIEFLY. ON-SITE PERSONNEL DETERMINED THAT A BLOCK-VALVE FAILED TO CLOSE UPON ACTIVATION OF THE ESD. THEY SHUT-IN THE BLOWDOWN VALVES TO STOP THE RELEASE AND BEGAN INVESTIGATING TO DETERMINE WHY THE BLOCK-VALVE DID NOT CLOSE. THE INVESTIGATION FOUND THAT DISTILLATE HAD FROZEN IN THE OPERATOR CONTROL-LINE FOR VALVE ABS5002R. THIS PREVENTED THE VALVE OPERATOR FROM PROPERLY ACTUATING TO SHUT THE VALVE RESULTING IN A TOTAL UNINTENTIONAL GAS LOSS OF 7,456 MCF TO ATMOSPHERE. FOLLOWING THE EVENT, PERSONNEL VERIFIED THAT ALL ESD SYSTEM-VALVES OPERATED PROPERLY AND THE CONTROL LINES ARE CLEAR OF LIQUIDS. GOING FORWARD THE STATION WINTERIZATION PLAN WILL INCLUDE A PROCESS TO ENSURE LIQUIDS ARE REMOVED FROM CONTROL LINES."
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.