TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — March 31, 2021
Incident Information
| Incident Date | March 31, 2021 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 30.98278, -94.14083 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $5,986 |
| Emergency Response | $106 |
| Other Costs | $0 |
Location Map
Incident Narrative
"KINDER MORGAN TENNESSEE GAS PIPELINE (TGP) GAS CONTROL IN HOUSTON, TX NOTICED A PRESSURE DROP VIA SCADA ON MARCH 31, 2021 AT 2:11 AM CDT AT THE TGP JASPER COMPRESSOR STATION 32. LOCAL PERSONNEL WERE CALLED TO THE SITE AND GAS CONTROL ADVISED THAT LOGS SHOWED PRESSURE DROP BEGAN AT 1:50 AM CDT ON 3/31/21. LOCAL PERSONNEL FOUND THAT A GARRETT ANSI 600 3"" X 4"" RELIEF VALVE HAD FAILED, PREMATURELY RELEASING GAS BELOW ITS SETPOINT OF 800 PSIG. THE RELIEF VALVE WAS ISOLATED AND THE GAS RELEASE CEASED AFTER 36 MINUTES, RELEASING A TOTAL OF 3,770 MCF OF NATURAL GAS. THE RELIEF VALVE WAS SHIPPED TO THE ORIGINAL EQUIPMENT MANUFACTURER (OEM) WHO DECIDED TO REBUILD THE RELIEF VALVE AND SHIP IT BACK TO TGP. RELIEF VALVE WAS REINSTALLED AND PLACE BACK INTO SERVICE APRIL 9, 2021. A 48-HOUR UPDATE WAS MADE TO THE NRC ON APRIL 1, 2021, ASSIGNED NRC REPORT #1301783."
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.