MIDWESTERN GAS TRANSMISSION CO
gas_transmission Incident — — November 13, 2023
Incident Information
| Incident Date | November 13, 2023 |
| Operator | MIDWESTERN GAS TRANSMISSION CO |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 41.06523, -88.08649 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | "VALVE LEFT OR PLACED IN WRONG POSITION, BUT NOT RESULTING IN AN OVERPRESSURE" |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON NOVEMBER 13, 2023, ONEOK TECHNICIANS WERE TROUBLESHOOTING A COMPRESSOR AT THE HERSCHER COMPRESSOR STATION. DURING TROUBLESHOOTING AN INCORRECT FUSE WAS REMOVED, CAUSING THE STATION TO EMERGENCY SHUTDOWN (ESD). DURING THE ESD SEQUENCE, THE OPERATORS NOTICED THE SHUTDOWN WAS TAKING LONGER THAN TYPICAL, THEREFORE THEY PROCEEDED TO MANUALLY ISOLATE THE STATION BLOW DOWN VALVE TO STOP THE BLOW DOWN. UPON FURTHER STATION WALKDOWN INSPECTIONS, THE OPERATORS DISCOVERED THAT THE STATION LOADING VALVE WAS LEFT IN THE INCORRECT OPEN POSITION. THE STATION WAS RETURNED TO SERVICE AFTER THE OPERATORS CLOSED THE VALVE AND LEFT IT IN THE CORRECT POSITION."
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.