MIDWESTERN GAS TRANSMISSION CO
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | MIDWESTERN GAS TRANSMISSION CO |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 39.51990, -87.56728 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
ON 01/18/24, MIDWESTERN GAS TRANSMISSION PARIS COMPRESSOR STATION PERSONNEL WERE PERFORMING A ROUTINE INSPECTION OF THE STATION YARD PIPING WHEN THEY OBSERVED DAMAGE TO THE VALVE ACTUATOR ON MAINLINE VALVE 2113. AS THEY APPROACHED THE AREA, THEY NOTICED THE MAINLINE VALVE ACTUATOR HAD DISLODGED STRIKING THE MAINLINE VALVE 2113 BYPASS LINE. THE PARIS STATION WAS NOT RUNNING AT THE TIME OF THE INCIDENT. OPERATIONS CONFIRMED THAT THE DAMAGE DID NOT CAUSE A RELEASE. AN INVESTIGATION FOUND THAT WATER ENTERED THE INSIDE OF THE STEM EXTENSION HOUSING. BELOW ZERO TEMPERATURES CAUSED THIS WATER TO FREEZE AND BLOCK THE STEM EXTENSION VENT. DURING THE RESPONSE OPERATIONS FOUND A SMALL STEM LEAK ON MAINLINE VALVE 2113. THE STEM WAS LEAKING INTO THE VALVE EXTENSION HOUSING. THE FROZEN VENT DID NOT ALLOW THE PRESSURE TO EVACUATE THE STEM EXTENSION HOUSING WHICH CAUSED PRESSURE TO BUILD AND DISLODGE THE VALVE STEM EXTENSION. WHEN THE VALVE STEM DISLODGED, IT DAMAGED THE VALVE ACTUATOR AND BYPASS LINE. PROPERTY DAMAGE COSTS TO THE VALVE ACTUATOR AND BYPASS LINE EXCEEDED THE REPORTING THRESHOLD.
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.