TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — December 23, 2022
Incident Information
| Incident Date | December 23, 2022 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 38.56176, -82.95504 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $30 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON 12/23/2022 AT 9:39 AM EST, STATION 200 EXPERIENCED AN ABNORMAL OPERATION WITH THE STATION DISCHARGE RELIEF VALVE (RV) 200-1A. TENNESSEE GAS PIPELINE (TGP) OPERATOR THAT WAS AT THE STATION HEARD THE AUDIBLE SOUND OF GAS RELEASE AND ASSESSED THE EVENT. THE RELIEF VALVE RE-SEATED AND SEALED AFTER 8 MINUTES. AT 10:30AM EST TENNESSEE GAS PIPELINE (TGP) INITIATED THE ERL CALL AND THE EVENT WAS DEEMED REPORTABLE. THE ROOT CAUSE ANALYSIS/INTERNAL INVESTIGATION WAS COMPLETED 01/31/2023. IN ORDER TO PREVENT REOCCURRENCE, THE RELIEF VALVE MANUFACTURER TECHNICIAN'S RECOMMENDED TO TGP TO HAVE A 5% SEPARATION MARGIN SETPOINT. IN ADDITION, TGP INCREASED THE RELIEF VALVE SET POINTS FOR ALL THREE RELIEF VALVES AT THE STATION PER THE MANUFACTURER'S RECOMMENDATION. THE RELIEF VALVE IN QUESTION WAS DISASSEMBLED, CLEANED, AND RECTIFIED BY A VENDOR'S TECHNICIAN AND NEW VALVE SOFT PARTS AND CONTROLS WERE INSTALLED."
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.