ENOGEX LLC
gas_transmission Incident — — November 4, 2011
Incident Information
| Incident Date | November 4, 2011 |
| Operator | ENOGEX LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 34.79531, -97.79971 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | OTHER INCORRECT OPERATION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON NOVEMBER 4, 2011 AT 11:55 AM THE COMANCHE TIE COMPRESSOR STATION WAS AUTOMATICALLY SHUTDOWN PER A ESD. THE ESD SYSTEM AUTOMATICALLY BLOCKED IN THE STATION AND VENTED ALL GAS TO A SAFE LOCATION; HOWEVER, A 2 INCH BYPASS VALVE AROUND THE COMPRESSOR SUCTION VALVE WAS INADVERTENTLY LEFT OPEN FOLLOWING ROUTINE STARTUP BY A COMPRESSOR TECHNICIAN. THIS ALLOWED GAS TO FLOW AROUND THE CLOSED SUCTION AND ESCAPE TO ATMOSPHERE THROUGH THE ESD VENT VALVE UNTIL ENOGEX PERSONNEL RESPONDING TO THE STATION DOWN ALARM BY GAS CONTROL IDENTIFIED THE SOURCE OF GAS AND PROPERLY ISOLATED. UPDATE MARCH 5, 2013: COMPLETED SECTION E.5.F.
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.