MARATHON PIPE LINE LLC
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | MARATHON PIPE LINE LLC |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 36.97082, -94.31477 |
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 DECEMBER 12, 2017, PERSONNEL WERE ON-SITE, COMPLETING PROJECT WORK TO DRAIN DOWN AN OUT-OF-SERVICE PUMP WHEN THE RELEASE OCCURRED. THE VENT VALVE ON TOP OF THE PUMP WAS CONNECTED VIA TUBING TO THE PUMP SEAL CAVITY, AS A MEANS OF PROVIDING THERMAL PROTECTION FOR UNIT 4 WHICH WAS OUT-OF-SERVICE AT THE TIME. WHEN THE UNIT SUCTION AND DISCHARGE VALVES WERE OPENED, PRODUCT FILLED THE UNIT AND FLOWED THROUGH THE VENT VALVE, OVERWHELMING THE PUMP SEAL CAVITY DRAIN. INVESTIGATION FINDINGS INDICATE THE CAUSE WAS DUE TO A PROJECT-SPECIFIC PROCEDURE THAT WAS INADEQUATE. PROCEDURE IMPROVEMENTS ARE BEING CONSIDERED FOR FUTURE PROJECT WORK. 2/27/18: PART C, QUESTION 3 - UPDATED ITEM INVOLVED TO ""OTHER - OVERFLOWED PUMP SEAL CAVITY"". PART C, QUESTION 4 - UPDATED THE YEAR INSTALLED TO 1949. PART D, QUESTION 7 - CORRECTED OUR RESPONSE TO ""NO"". PART H - UPDATED THE 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.