DOMINION ENERGY OHIO

Incident Narrative

AT APPROXIMATELY 6:00 AM ON MAY 30, 2019, STORAGE WELL #1944 WAS STRUCK WITH A TRACTOR AND MANURE SPREADER. THE CONTRACTED MANURE SPREADER WAS NOT THE NORMAL FARMER DOING THE WORK, AND NOT FAMILIAR WITH THE PROPERTY. THE WORK WAS PERFORMED DURING EARLY HOURS WITH LESS DAY LIGHT FOR VISIBILITY. DOMINION ENERGY OHIO FIELD PERSONNEL WERE NOTIFIED BY THE FARMER AND ARRIVED ON LOCATION AT 06:45 AM. THE GAS LEAK WAS FOUND TO BE COMING FROM BELOW THE MASTERVALVE (GATE VALVE), ON THE FLANGE BETWEEN THE MASTERVALVE AND THE WELLHEAD ADAPTER FLANGE (INTERNAL WELLHEAD SEALS). WELLHEAD CASING PRESSURE (3.50"" OD CASING) WAS MEASURED AT 315 PSIG. ANNULAR PRESSURE WAS MEASURED AT 0.5 PSIG. AT 06:48 HRS, THE WELL WAS BLOWN TO THE STOCK TANK AND BLEW DOWN COMPLETELY IN 5 MINUTES. THE WELL IS STILL BLOWN DOWN AND REPAIR COSTS ARE ESTIMATED. ADDITIONAL PROTECTION AROUND THE WELL IS BEING CONSIDERED TO MINIMIZE THE POSSIBILITY OF A RECURRENCE. ALSO, ADDITIONAL ENHANCEMENTS TO PUBLIC AWARENESS IS BEING CONSIDERED TO INCLUDE MANURE SPREADER CONTRACTORS. THE WELL IS STILL SHUT IN AND IS ANTICIPATED TO BE REPAIRED/REPLACED SOMETIME IN NOVEMBER 2019. UPDATES WILL CONTINUE TO BE PROVIDED VIA EMAIL TO THE LEAD PHMSA STORAGE INSPECTOR. THE OCTOBER 2019 UPDATE REQUEST AND GUIDANCE PROVIDED BY PHMSA FOR UPDATES ALSO SUGGESTED THAT NO FURTHER SUPPLEMENTAL REPORTING WAS REQUIRED FOR THIS INCIDENT.