ANR PIPELINE CO
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | ANR PIPELINE CO |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.49622, -99.31138 |
Cause
| Cause | OTHER OUTSIDE FORCE DAMAGE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
AFTER RUNNING OVER A PIPE GUARD AND A HIGH-HEAD VALVE EXTENSION WITH CULTIVATING EQUIPMENT, THE PROPERTY OWNER CALLED TRANSCANADA GAS CONTROL TO REPORT LEAKING GAS AT 12:50 CT ON SEPTEMBER 7, 2016. FIELD PERSONNEL WERE DISPATCHED TO INVESTIGATE. IT WAS CONFIRMED THAT THE AFFECTED FACILITIES WERE ON ANR'S 496-0601 TAP TO THE 496-1601 LINE. THE 6"" SIDE VALVE ASSEMBLY WAS WHAT REMAINED OF THE 496-0601 LATERAL THAT WAS ABANDONED IN 1998. VALVES ON THE 496-1601 LINE ON EACH OF THE TAP WERE USED TO ISOLATE AND BLOW DOWN THE LEAKING FACILITY. IT WAS DETERMINED AFTER BLOWING DOWN THIS SEGMENT THAT THE EQUIPMENT STRIKE CAUSED A 1/2-INCH BODY BLEED ON THE6"" SIDE VALVE TO BREAK AND LEAK. NECESSARY REPAIRS WERE MADE AND THE FACILITY WAS RETURNED TO SERVICE ON SEPTEMBER 19, 2016. THERE WAS NOT IGNITION OF THE LEAKING GAS. THERE WAS NO EVIDENCE OF LIQUID HYDROCARBONS FROM THE LEAK. THERE WERE NO INJURIES. AS A PRECAUTION THE CLOSEST RESIDENTS WERE ASKED TO NOT RETURN TO THEIR HOMES UNTIL THE BLOWDOWN WAS COMPLETED AND THE FACILITY WAS MADE SAFE. THE CLOSEST OF THE TWO RESIDENCES WAS 300 FEET FROM THE LOCATION OF THE LEAK, SIGNIFICANTLY OUTSIDE THE PIR OF 135 FEET.
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.