MARATHON PIPE LINE LLC

hazardous_liquid Incident —

Incident Information

Report Date
OperatorMARATHON PIPE LINE LLC
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates37.77662, -87.07366

Cause

CauseINCORRECT OPERATION
Subcause—

Casualties

Fatalities0
Injuries0

Costs

Property Damage
Lost Commodity
Public/Private Damage
Emergency Response
Environmental Remediation
Other Costs

Location Map

Incident Narrative

A FLASH FIRE OCCURRED WHILE WELDING IN A TEE. TWO POSSIBLE CAUSES WERE IDENTIFIED THROUGH INVESTIGATION, BUT NEITHER CAN BE RULED OUT. #1: POSSIBLE MUD PLUG FAILURE, PROVIDING A VAPOR FUSE, WITH POSSIBLE IGNITION FROM THE WELDING ARC. CONTINUOUS MONITORING WAS TAKING PLACE ADJACENT TO THE WELD ZONE. #2: POSSIBLE VAPOR LEAK FROM UPSTREAM VENT COULD HAVE BEEN PRESENT, PROVIDING A VAPOR FUSE, WITH POSSIBLE IGNITION FROM THE WELDING GROUND ARC.

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.

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