TESORO HIGH PLAINS PIPELINE COMPANY LLC

hazardous_liquid Incident —

Incident Information

Report Date
OperatorTESORO HIGH PLAINS PIPELINE COMPANY LLC
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates48.39696, -102.91027

Cause

CauseNATURAL FORCE DAMAGE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

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

Location Map

Incident Narrative

WATER DRAIN VALVE OF BREAKOUT TANK WAS DISCOVERED LEAKING. ESTIMATED FIVE BARRELS WAS RELEASED IN TO SECONDARY CONTAINMENT. THE DRAIN LINE FROM THE ROOF OF THE TANK HAD WATER AND ICE CAUSING A CRACK IN THE WATER DRAIN VALVE ON THE OUTSIDE OF TANK 7206. A DAMAGED SEAL AT THE DRAIN PIPE NOZZLE ALLOWED OIL TO ENTER THE DRAIN LINE WHICH CAUSED OIL TO LEAK FROM THE CRACKED DRAIN VALVE. THE TANK HAS BEEN REPAIRED AND IT IS IN THE PROCESS OF BEING RE-COMMISSIONED.

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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