TEXAS GAS TRANSMISSION, LLC
gas_transmission Incident — — April 18, 2020
Incident Information
| Incident Date | April 18, 2020 |
| Operator | TEXAS GAS TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 30.08924, -92.02912 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $215 |
| Emergency Response | $189 |
| Other Costs | $0 |
Location Map
Incident Narrative
TEXAS GAS' GAS CONTROL RECEIVED A CALL ABOUT NOISE AT ITS YOUNGSVILLE COMPRESSOR STATION ON 4/18/20 AT 20:45. GAS CONTROL DISPATCHED OPERATIONS PERSONNEL WHO ARRIVED AT THE SITE AT 21:08. UPON ARRIVAL, THEY FOUND THAT ENGINE #5 HAD SHUT DOWN DUE TO FIN FAN FAILURE WHICH CLOSED THE UNIT VALVES; THUS, RELIEF VALVE VENTED AND PRESSURE WENT TO 0 PSIG. ALTHOUGH NO EVIDENCE OF DAMAGE WAS FOUND, THE HIGH SIDE PILOT WAS REPLACED TO ENSURE ITS INTEGRITY. EVERYTHING OPERATED AS IT SHOULD. NEAR THE TIME THIS INCIDENT OCCURRED, ELECTRICAL STORMS WERE IN THE AREA. WHILE IT IS UNCLEAR WHETHER TEXAS GAS EXPERIENCED A LIGHTNING STRIKE, THE LIGHTNING STORM CAUSED THE COOLING FANS TO SHUT DOWN ON THIS ENGINE AND ANOTHER. AT THIS TIME PRESSURE DROP WAS SEEN ON THE ENGINE DISCHARGE TRANSMITTER WHICH CONTINUED UNTIL UNIT #5 HIGH TURBO OIL TEMPERATURE SHUT THE UNIT DOWN AT 21:08 INDICATING FAILURE ON HIGH SIDE PILOT FOR RELIEF. UNIT VALVES THEN CLOSED AND THE RELIEF VALVE VENTED TO 0 PSIG. PRESSURE INDICATION WAS NEVER OVER THE SET POINT.
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.