SUNOCO PIPELINE L.P.

Incident Narrative

MAIN LINE VALVE SITE FOR MLV-0412 WAS STRUCK BY AN AUTOMOBILE IN THE EARLY HOURS OF THE MORNING ON 8/18/2021. THE CONTROL CENTER WAS NOTIFIED OF THE RELEASE AT 3:15 AM BY A THIRD PARTY. THE PIPELINE WAS DOWN ON NORMAL SCHEDULE BUT SCADA INDICATIONS AROUND THIS SAME TIME WERE INDICATIVE OF AN ISSUE WITH THE LINE. A 2-VEHICLE ACCIDENT OCCURRED AT THE INTERSECTION OF TELEGRAPH AND ERIE RD. AND AS A RESULT ONE VEHICLE TRAVELLED OUT OF CONTROL THROUGH THE MLV-0412 FENCING AND CAME TO REST ON PIPING AT MOV-0412. DAMAGE SUSTAINED TO THE MLV SITE INCLUDE FENCING DAMAGE, BROKEN HAND WHEEL ON MLV-0412 AND DAMAGE TO A 2 INCH TOR FITTING WHICH WAS IDENTIFIED THE SOURCE OF THE BUTANE LEAK. LOCAL EMERGENCY RESPONDERS, FIRE DEPARTMENT (FD) AND POLICE DEPARTMENT (PD) ISOLATED THE SURROUNDING ROADS TO TRAFFIC AND STOPPED RAILROAD TRAFFIC ON THE TRACKS RUNNING PARALLEL TO THE PIPELINE ROW. CONTROL CENTER OPERATOR USED REMOTE OPERATED VALVES TO ISOLATE THE PIPELINE AND MADE INTERNAL NOTIFICATIONS TO COMPANY FIELD PERSONNEL WHO FURTHER ISOLATED THE PIPELINE BY CLOSING MANUAL VALVES. COMPANY PERSONNEL ESTABLISHED INCIDENT COMMAND SYSTEM WITH LOCAL FD AND PD RESPONDERS AND DISPATCHED OSRO CONTRACTORS AND ADDITIONAL ENVIRONMENTAL CONTRACTORS TO MONITOR GAS / LEL LEVELS. THE INCIDENT COMMANDER COORDINATED WITH FD & PD TO REQUEST EVACUATION WITHIN A 0.5 MILE RADIUS OF THE VALVE SITE. FD & PD PERSONNEL WENT DOOR TO DOOR TO NOTIFY RESIDENTS OF THE EVACUATION. 8 INDIVIDUALS EVACUATED AND WERE OFFERED HOTEL ROOMS BY THE COMPANY. OTHER RESIDENTS ELECTED TO SHELTER IN PLACE. A PORTABLE FLARE WAS SET UP AT THE NEXT VALVE SITE LOCATION DOWNSTREAM TO THE NORTH TO FURTHER TAKE PRESSURE OFF THE PIPELINE. A WATER INJECTION WAS INITIATED DOWNSTREAM OF MLV-0412 TO FLOOD / FLUSH AND PUSH BUTANE REMAINING IN THE PIPELINE DOWNSTREAM TOWARDS THE FLARE. ONCE THE WATER FLOW / FLUSH WAS PAST THE MLV SITE, AND THERE WAS WATER COMING OUT OF THE DAMAGED FITTING, AND THE GAS MONITOR READINGS WERE SAFE TO WORK, A CRANE REMOVED THE VEHICLE FROM WHERE IT RESTED UP ON THE MLV-0412 AND TEMPORARY REPAIRS WERE MADE TO THE DAMAGED EQUIPMENT. THE MLV-0412 SITE WAS FURTHER EVALUATED BY EXCAVATION ON THE UPSTREAM AND DOWNSTREAM SIDES OF THE VALVE. NDE EVALUATION OF THE PIPING AND WELDS WAS CONDUCTED. NO DAMAGE TO THE UNDERGROUND PIPING OR WELDS WAS IDENTIFIED. THE EXCAVATION WAS BACKFILLED, AND THE LINE RETURNED TO NORMAL SERVICE.