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ENBRIDGE STORAGE (PATOKA) L.L.C.

hazardous_liquid Incident —

Incident Information

Report Date—
OperatorENBRIDGE STORAGE (PATOKA) L.L.C.
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates38.78778, -89.08389

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 JANUARY 20, WHILE MAKING ROUTINE INSPECTIONS AT THE PATOKA STORAGE FACILITY, THE LOCAL TECHNICIAN NOTICED OIL COMING FROM THE TANK 5354 ROOF DRAIN VALVE. THE 4"" ROOF DRAIN VALVE BODY WAS SPLIT HORIZONTALLY AND WEEPING OIL. THE ROOF DRAIN HOSE WAS LEAKING INTERNALLY, AND HAD PRODUCT INSIDE OF IT. CONTRACTORS ARRIVED ON SITE TO ASSIST WITH THE REPAIR AND CLEANUP A SHORT TIME AFTER INITIAL DISCOVERY OF OIL ON THE GROUND. KNOWING THAT THE ROOF DRAIN HOSE WAS LEAKING INTERNALLY, THE PLUG WAS REMOVED FROM THE ROOF DRAIN VALVE SO THE LEAKING HOSE COULD BE PROPERLY DRAINED WITH A TUB AND A VACUUM TRUCK. FURTHER INVESTIGATION REVEALED WATER INSIDE THE VALVE BODY HAD FROZE DUE TO OUTSIDE TEMPERATURES, CRACKED THE VALVE BODY, WHICH CAUSED THE OIL TO WEEP OUT THROUGH THE CRACKED VALVE BODY. THE VALVE WAS REPLACED AND ANTIFREEZE WAS PUT IN THE VALVE TO MAKE SURE THE VALVE BODY DOES NOT FREEZE. THIS TANK IS SCHEDULED FOR AN OUT OF SERVICE API 653 IN APRIL 2012, AT WHICH TIME THE ROOF DRAIN SYSTEM WILL BE REPLACED. APPROXIMATELY 3 YARDS OF CONTAMINATED SOIL WAS RECOVERED AND WILL BE DISPOSED OF AT AN APPROVED 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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