MARATHON PIPE LINE LLC
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | MARATHON PIPE LINE LLC |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 38.99704, -87.71476 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
ON JULY 18, 2018, MARATHON PIPE LINE'S (MPL) OPERATIONS CENTER RECEIVED A HAZARDOUS ATMOSPHERE ALARM AT 16:42, WHILE SWITCHING FROM ROBINSON UNIT 5 TO UNIT 3. MPL FIELD PERSONNEL CONFIRMED AN ACTIVE LEAK AT THE FLANGED CONNECTION FOR THE HEAT EXCHANGER. APPROXIMATELY SEVEN GALLONS OF DIESEL WAS RELEASED. ALL PRODUCT WAS CONTAINED ON-SITE AND CLEANED UP PROMPTLY. THE CAUSE OF THE GASKET FAILURE WAS DUE TO AN OVERPRESSURE OF THE HEAT EXCHANGER WHILE SWITCHING UNITS. PIPING DESIGN AND INADEQUATE PROCEDURES CONTRIBUTED TO THE OVERPRESSURE OF THE HEAT EXCHANGER. PROCEDURE UPDATES HAVE BEEN IMPLEMENTED TO PREVENT STARTING UNIT 3 BEFORE UNIT 5 IS SHUTDOWN AND AN ENGINEERED SOLUTION IS BEING DEVELOPED TO IMPROVE PIPING DESIGN. 10/19/18 UPDATE: UPDATED NARRATIVE WITH INVESTIGATION RESULTS.
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.