EQT MIDSTREAM
gas_transmission Incident — — July 15, 2012
Incident Information
| Incident Date | July 15, 2012 |
| Operator | EQT MIDSTREAM |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 40.25563, -79.96106 |
Cause
| Cause | OTHER INCIDENT CAUSE |
| Subcause | MISCELLANEOUS |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"AT 9:00 A.M. ON JULY 15, 2012 AN EQT OPERATIONS EMPLOYEE DISCOVERED A RELIEF VALVE VENTING AT THE HARTSON COMPRESSOR STATION. UPON INVESTIGATION THE EMPLOYEE DETERMINED THE RELIEF VALVE HAD BEEN VENTING APPROXIMATELY TWO HOURS. THE OPERATIONS EMPLOYEE NOTIFIED GAS CONTROL. GAS CONTROL OPERATED A CONTROL VALVE TO REROUTE GAS FLOW AND REDUCE THE PIPELINE PRESSURE. THE RELIEF VALVE CEASED VENTING AT APPROXIMATELY 9:20 A.M. THE MAOP OF THE PIPELINE ON WHICH THE RELIEF VALVE IS LOCATED IS 328 PSIG. THE RELIEF VALVE ACTIVATED AT 286 PSIG AND LEVELED OFF AT 260 PSIG. A CALCULATION WAS PERFORMED THAT DETERMINED THE GAS LOSS EXCEEDED THE 3 MILLION CUBIC FOOT THRESHOLD FOR REPORTING AS PER CFR49 PART 191.3. EQT HAS REVISED THE NORMAL OPERATION OF THIS PIPELINE SYSTEM AS A CORRECTIVE ACTION TO PREVENT A REOCCURENCE."
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.