MARATHON PIPE LINE LLC — Hazardous liquid — incident on 2017-03-12

Hazardous liquid incident in LIMA, ALLEN COUNTY County, OH. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 1.8 REFINED AND/OR PETROLEUM PRODUCT (NON-HVL) WHICH IS A LIQUID AT AMBIENT CONDITIONS released, $738 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: 20170118.

Operator ID: 32147.

Reported incident date: 3/12/2017 13:15.

Location detail: FACILITY

Cause detail: NON-THREADED CONNECTION FAILURE

Cause detail: ON MARCH 12, MARATHON PIPE LINE (MPL) PERSONNEL DISCOVERED DIESEL SPRAYING FROM A VENT HOLE ON TOP OF A 1/2 INCH CONSOLIDATED THERMAL PRESSURE RELIEF VALVE AT MPL'S LIMA METERING PIPELINE STATION. THE SYSTEM WAS PROMPTLY SHUTDOWN AND THE RELEASE WAS CLEANED UP BY EXCAVATING THE CONTAMINATED SOIL. THE TOTAL RELEASE VOLUME WAS ESTIMATED AT 75 GALLONS AND ALL RELEASED PRODUCT WAS CONTAINED ON SITE. THE VALVE WAS REPLACED AND THE LINE RESTARTED. THE VALVE O-RING WAS FOUND TO BE SWELLED AND ROLLED UP OUT OF POSITION. FAILURE ANALYSIS DETERMINED THAT THE MANUFACTURER SUPPLIED INCOMPATIBLE O-RING MATERIAL THAT DID NOT MEET OPERATOR SPECIFICATIONS. 9/15/17 UPDATE: PART D, QUESTION 8: FINAL COSTS WERE UPDATED. PART H: NARRATIVE WAS UPDATED.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — NON-THREADED CONNECTION FAILURE.

PHMSA indexed costs: $20,866 reported total cost, $10,199.649 in 1984 dollars, $25,118.597 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.