MPLX LP — Hazardous liquid gravity and reporting-regulated-only — incident on 2023-05-17

Hazardous liquid gravity and reporting-regulated-only incident in KINGFISHER, KINGFISHER County, OK. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 700 CRUDE OIL released, $224,965 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20230056.

Operator ID: 40149.

Reported incident date: 5/17/2023 15:15.

Cause detail: INTERNAL CORROSION

Cause detail: ON 05/17/2023 AT 14:40 CENTRAL TIME, MPLX RECEIVED A CALL FROM A LANDOWNER SAYING THEY BELIEVED A PIPELINE WAS LEAKING ON THEIR PROPERTY. AT 15:15 CT, MPLX OPERATIONS, SAFETY, AND ENVIRONMENTAL PERSONNEL ARRIVED AT THE SITE. THE PIPELINE WAS SHUT IN UPSTREAM AND DOWNSTREAM OF THE LEAK TO VERIFY THAT THE LEAK WAS OUR PIPELINE. AN INTERNAL CONFERENCE CALL WAS INITIATED BETWEEN DEPARTMENTS TO IMPLEMENT EMERGENCY RESPONSE AND STAND-UP ICS. AT 16:17, NRC WAS NOTIFIED OF THE INCIDENT, CASE NO. 136753OVARRTI. AFTER NRC NOTIFICATION, PLANNING, AND LOGISTICS OPERATIONS BEGAN IN ORDER TO REPAIR THE LINE, CONTAIN THE SPILL, AND PLAN THE REMEDIATION. ON 05/18/2023 AT 07:30, PERSONNEL AND CONTACTORS ARRIVED AT THE ESTABLISHED EMERGENCY OPERATIONS CENTER TO ESTABLISH A PLAN TO EXCAVATE AND REPAIR THE PIPE WHILE THE CONTAINMENT OF THE SPILL WAS TAKING PLACE. THE LANDOWNER AND INTERESTED AGENCIES WERE CONTACTED TO EITHER PROVIDE UPDATES OR ENSURE NOTIFICATION HAD OCCURRED. CONTAINMENT WAS COMPLETED, AND THE CONTRACTOR BEGAN 24-HR SKIMMING OPERATIONS. ON 5/19/2023, CONTAINMENT AND SKIMMING OPERATIONS CONTINUED WHILE EXCAVATION OF THE AFFECTED LINE WAS CONDUCTED. REMOVAL OF THE PIPE SECTION BEGAN AT 17:30, AND REPAIR OPERATIONS WERE HALTED AT 24:00 AFTER THE TIE-IN HAD BEEN COMPLETED. AT THIS POINT, THE PIPE SECTION HAD BEEN REMOVED, THE TIE-IN OF THE NEW SECTION WAS COMPLETE, AND REMEDIATION ACTIVITIES CONTINUED. ON 5/20/2023, FINALIZATION OF THE NEW PIPE SECTION TIE-IN WAS COMPLETED TO INCLUDE X-RAY VERIFICATION OF WELDS. AFTER CONFIRMATION OF CONNECTION, OPERATIONS COMMENCED LINE FILLING AND PLACED THE LINE BACK IN SERVICE AT 15:00. SKIMMING AND REMEDIATION OF THE IMPACTED AREA CONTINUED. AT THE END OF REPAIR OPERATIONS AND BRINGING THE LINE BACK INTO SERVICE, THE ICS RESPONSE WAS STOOD-DOWN.