SUMMIT MIDSTREAM PARTNERS, LLC

hazardous_liquid Incident — — April 12, 2018

Incident Information

Incident DateApril 12, 2018
OperatorSUMMIT MIDSTREAM PARTNERS, LLC
CommodityCRUDE OIL
Pipeline Typehazardous_liquid

Location

State
Coordinates48.27234, -103.35937

Cause

CauseEQUIPMENT FAILURE
SubcauseNON-THREADED CONNECTION FAILURE

Casualties

Fatalities0
Injuries0

Costs

Property Damage$11,000
Emergency Response$150
Other Costs$0

Location Map

Incident Narrative

ON 04/12/2018 AT 9:00 AM, SUMMIT'S OPERATION PERSONNEL WERE PERFORMING ROUTINE CHECKS AT EPPING STATION. A SUMMIT OPERATOR DISCOVERED DISCOLORATION OF THE VALVE STEM FOR THE LITTLE MUDDY PIPELINE 10"" VALVE. AFTER FURTHER INVESTIGATION, THE OPERATOR DETERMINED THE VALVE HAD DEVELOPED A SLOW LEAK FROM THE VALVE STEM. THE OPERATOR REPORTED THE LEAK TO LOCAL OPERATIONS MANAGEMENT AND SUMMIT'S CONTROL CENTER. THE VALVE WAS GREASED AS A TEMPORARY MEASURE TO ELIMINATE THE LEAK. SNOW WAS COVERING THE GROUND AT THE TIME OF THE LEAK. A VACUUM TRUCK WAS DISPATCHED TO ASSIST IN SNOW REMOVAL AND CLEANUP. REMEDIATION OF THE LEAK DETERMINED APPROXIMATELY 32 GALLONS OF CRUDE OIL WERE RELEASED. THE INCIDENT INVESTIGATION REVEALED THE PACKING ON THE 10"" VALVE HAD FAILED. A NEW 10"" VALVE WAS INSTALLED AS PERMANENT CORRECTIVE ACTION.

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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