ENBRIDGE ENERGY, LIMITED PARTNERSHIP

hazardous_liquid Incident —

Incident Information

Report Date
OperatorENBRIDGE ENERGY, LIMITED PARTNERSHIP
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates42.51168, -84.23790

Cause

CauseEQUIPMENT FAILURE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

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

Location Map

Incident Narrative

ON OCTOBER 11, 2018 AT APPROXIMATELY 1500 EST, A RELEASE WAS DISCOVERED ON THE DRAIN PIPE FLANGE CONNECTION TO THE LINE 78 SUMP TANK AT STOCKBRIDGE TERMINAL. DUE TO WATER GETTING INTO THE SUMP OVER THE SUMMER, A PROJECT WAS INITIATED TO INVESTIGATE THE CAUSE RESULTING IN THIS DISCOVERY DURING EXCAVATION. THE MARSHALL PLM WAS ON SITE WITH A CONTRACT EXCAVATOR TO REMOVE THE CONTAMINATED SOIL. A NOTIFICATION TO THE NRC (#1227232) WAS MADE AT 1545 EST. THE CAUSE OF THE RELEASE WAS DETERMINED TO BE DUE TO AN INCORRECT GASKET AND TORQUE THAT WAS APPLIED TO THE EQUIPMENT DURING INSTALLATION IN THE CONSTRUCTION PHASE. A NEW GRAPHITE GASKET WAS INSTALLED AND THE FLANGE WAS RE-TORQUED. APPROXIMATELY 30 CUBIC YARDS OF CONTAMINATED SOIL WAS REMOVED FROM THE RELEASE SITE.

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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