ENBRIDGE PIPELINES (NORTH DAKOTA) LLC
hazardous_liquid Incident — — December 21, 2012
Incident Information
| Incident Date | December 21, 2012 |
| Operator | ENBRIDGE PIPELINES (NORTH DAKOTA) LLC |
| Commodity | CRUDE OIL |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 48.28449, -102.92627 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | OTHER INCORRECT OPERATION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $37,186 |
| Other Costs | $19,888 |
Location Map
Incident Narrative
CONTRACTOR SHOWED UP ON SITE AT 6:20 A.M. AND COMPLETED A WALK-AROUND. NO OIL WAS DISCOVERED ON THE GROUND AT THAT TIME. AT APPROXIMATELY 6:50 A.M., ANOTHER CONTRACTOR HEARD SOME HISSING SOUNDS SO COMPLETED A WALK AROUND OF THE MANIFOLD AREA WHERE A LEAK WAS DISCOVERED COMING FROM A VALVE MISSING A 1/2 INCH PLUG. THE AREA OF THE MANIFOLD, WHERE THE LEAK TOOK PLACE, WAS NOT SCHEDULED FOR LINE-FILL AT THIS TIME. IT WAS CAUSED BY BACK-FILLING (GRAVITY FED FROM TANK 9503) FROM A VALVE WITH ICE BUILDUP, ALLOWING A SLOW SEEP BY. VALVE FAILED DUE TO ICE BUILDUP (UNDER GATE VALVE SLAB) FROM HYDROTESTING NEW SYSTEM. NRC WAS NOTIFIED AT 8:40 A.M. CLEAN UP OF SURFACE OIL AND CONTAMINATED SOILK VIA HYDRO EXCAVATING WAS STARTED AND COMPLETED. THE EMERGENCY RESPONSE PROCESS OPERATED UNDER ICS AND WAS DOCUMENTED WITH AN ICS 201 PACKET. RELEASE WAS ESTIMATED AT 10 GALLONS. AN ESTIMATED 5 CUBIC YARDS OF CONTAMINATED SOIL WAS BE HAULED TO CLEAN HARBORS DISPOSAL 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.