ENABLE GAS TRANSMISSION, LLC
gas_transmission Incident — — October 26, 2018
Incident Information
| Incident Date | October 26, 2018 |
| Operator | ENABLE GAS TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.53260, -99.37370 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,000 |
| Emergency Response | $1,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON 10/26/18 ENABLE GAS TRANSMISSION SYSTEM CONTROL RECEIVED A CALL FROM THE GENERAL PUBLIC OF A BLOWING RELIEF VALVE IN ROGER MILLS COUNTY, OKLAHOMA. AN EMPLOYEE WAS DISPATCHED AND WHEN THEY ARRIVED TO THE SITE COULD SEE A RELIEF VALVE BLOWING. THE TECHNICIAN INSTALLED A PRESSURE GAUGE AND VERIFIED PRESSURE TO BE BELOW MAOP. THE VALVE WAS SHUT IN STOPPING THE VENTING GAS. PRESSURE WAS RECHECKED TO ASSURE THERE WERE NO PRESSURE PROBLEMS. THE VALVE WAS ISOLATED UNTIL REPAIRS COULD BE COMPLETED. DURING REPAIR, THE VALVE WAS ACTIVATING AROUND 700 PSIG AND THE CONTRACTOR REBUILT THE PILOT ON THE VALVE. THE VALVE WAS RE-TESTED AND PLACED INTO SERVICE. ORIGINALLY, THE GAS LOSS WAS CALCULATED TO BE NEAR 800 MCF. ON 10/29/18 IT WAS DETERMINED THE ORIGINAL CALCULATION USED INCORRECT RELIEF VALVE SIZING AND WAS RECALCULATED FOR A GAS LOSS OF 4512 MCF. THE NRC WAS NOTIFIED ON 10/29/18 09:10 (NRC#1228821). THE 48 HOUR FOLLOW UP WAS PROVIDED ON 10/31/18 07:20 (NRC# 1229004).
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.