ENBRIDGE ENERGY MARKETING LLC
hazardous_liquid Incident — — December 22, 2012
Incident Information
| Incident Date | December 22, 2012 |
| Operator | ENBRIDGE ENERGY MARKETING LLC |
| Commodity | CRUDE OIL |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 32.83300, -90.84500 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | DEFECTIVE OR LOOSE TUBING OR FITTING |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
A PIPE REPLACEMENT PROJECT HAD JUST BEEN COMPLETED ON THE TINSLEY TO MAYERSVILLE 8"" PIPELINE. AFTER THE HYDROTEST, THE VALVES AT VALVE SITE #6 WERE PLACED BACK ONTO THE PIPELINE. THE VALVES CONSISTED OF THE 8"" MAINLINE VALVE AND THREE 2"" VALVES (ONE UPSTREAM AND TWO DOWNSTREAM OF THE 8"" VALVE FOR FUTURE SCADA INSTALLATION). THE VALVES WERE REMOVED TO INSTALL BLINDS FOR THE HYDROTEST. THE PIPELINE WAS HANDED OVER FROM CONSTRUCTION TO OPERATIONS AS COMPLETE AND READY FOR SERVICE. OPERATIONS BEGAN START-UP OF THE PIPELINE WHEN A LEAKING FLANGE AT VALVE SITE #6 ON ONE OF THE 2"" VALVES DOWNSTREAM OF THE 8"" VALVE WAS REPORTED. OPERATIONS SHUT THE PIPELINE DOWN THEN CONFIRMED THE LEAK. THE INITIAL CAUSE OF THE LEAK APPEARS TO BE LOOSE FLANGE BOLTS ON THE 2"" VALVE ASSEMBLY. THE FLANGE BOLTS WERE TIGHTENED TO ELIMINATE THE LEAK AND CLEAN-UP WAS INITIATED. THIS REPORT REFLECTS THE CORRECTED GPS FOR THE RELEASE LOCATION FROM THE ORIGINAL REPORTED COORDINATES ON THE NRC REPORT. SUPPLEMENTAL REPORT SUBMITTED 4/11/14 PER PHMSA SOUTHERN REGION'S REQUEST TO INDICATE FINAL REPORT.
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.