ENBRIDGE ENERGY, LIMITED PARTNERSHIP

hazardous_liquid Incident —

Incident Information

Report Date
OperatorENBRIDGE ENERGY, LIMITED PARTNERSHIP
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates46.68889, -92.05972

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

ON AUGUST 17 ENBRIDGE LABORERS, CUTTING GRASS WITHIN THE SUPERIOR TERMINAL, DISCOVERED A SMALL AMOUNT OF OIL ON THE GROUND NEAR THE SW CORNER OF TANK 12. LOCAL PLM AND TECHNICIANS WERE CALLED TO THE SCENE TO INVESTIGATE. ON AUGUST 18, ENBRIDGE CHOSE TO CALL THE NRC TO VERBALLY REPORT SINCE THE COST THRESHOLD WAS STILL UNDETERMINED. APPROXIMATELY 40 GALLONS OF OIL WAS CONFIRMED TO BE WITHIN THE SOIL NEAR THE AFFECTED VALVE. AFTER EXCAVATION AND FURTHER INVESTIGATION, IT WAS DISCOVERED THAT A PIPE NIPPLE ON A TERMINAL GATE VALVE HAD CRACKED DUE TO FROST HEAVE. ALL OF THE SMALL PIPING ON THE VALVE HAS BEEN REPLACED. THE ENBRIDGE ENVIRONMENT DEPARTMENT IS DIRECTING THE REMOVAL OF THE APPROXIMATELY 200 YARDS OF CONTAMINATED SOIL.

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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