MPLX LP — Hazardous liquid gravity and reporting-regulated-only — incident on 2023-10-31

Hazardous liquid gravity and reporting-regulated-only incident in MENTONE, LOVING County, TX. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 195 CRUDE OIL released, $200,000 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: 20230103.

Operator ID: 40149.

Reported incident date: 10/31/2023 7:15.

Cause detail: INTERNAL CORROSION

Cause detail: ON OCTOBER 31 AT 7:15 MOUNTAIN TIME, LOCAL OPERATIONS DISCOVERED CRUDE ON THE GROUND AT THE CONAN STATION SUSPECTED TO BE ORIGINATING FROM A SECTION OF PIPE THAT WOULD ALLOW A TIGHT LINE MOVEMENT FROM CR1 STATION TO STATELINE. CR1 TO CONAN AND CONAN TO STATELINE PIPELINES WERE SHUT IN TO INSTALL BLINDS ON THE AFFECTED SECTION OF PIPING. CR1 TO CONAN AND CONAN TO STATELINE WERE ALLOWED TO RESUME NORMAL OPERATION AFTER THE SPEC BLIND HAD BEEN FLIPPED, ISOLATING THE AFFECTED SECTION OF PIPING. CORRECTIVE ACTIONS: EXCAVATION OF IMPACTED SOIL HAS BEEN ONGOING. HEAVILY IMPACTED SOIL IS BEING DISPOSED OF; HOWEVER, SOIL SHREDDING IS ALSO BEING CONDUCTED TO BRING TPH LEVELS BELOW THE ESTABLISHED STANDARDS. THE REMEDIATION PLAN FOR THE IMMEDIATE FUTURE IS TO REMOVE AND TREAT THE DELINEATED IMPACT ZONE. THE AFFECTED 8' BYPASS LINE HAS BEEN DISCONNECTED FROM THE STATION PIPING, DE-INVENTORIED, CLEANED, AND ABANDONED IN PLACE.