OKLAHOMA NATURAL GAS CO
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | OKLAHOMA NATURAL GAS CO |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.30324, -97.59951 |
Cause
| Cause | NATURAL 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
THE PIPELINE SYSTEM (LINE-F) CONSISTED OF A 20"" LINE (SOUTH OF THE BRIDGE) THAT SPLIT INTO TWO LINES (12"" AND 16"" TRAVERSING THE BRIDGE) AND COMBINED INTO A 24"" LINE (NORTH OF THE BRIDGE). THE EF5 TORNADO DAMAGED THE TRESTLE BRIDGE AND CAUSED BOTH LINES TO BE DISLODGED FROM THEIR SUSPENSION ON THE BRIDGE. A 1"" NIPPLE WAS BROKEN OFF OF THE 16"" LINE, WHEN BOTH LINES FELL ONTO RIVERBED, WHICH CAUSED AN INITIAL UNINTENTIONAL RELEASE. A CONTROLLED RELEASE OCCURRED AFTERWARDS WHEN VALVES ON EITHER END OF THE PIPELINE SECTION OVER THE RIVER WERE CLOSED. BOTH LINES WERE REMOVED FROM SERVICE AND WERE REPLACED BY A SINGLE 24"" LINE BORED UNDER THE RIVER. THE INITIAL REPORTING OF THE EVENT WAS DELAYED DUE TO CELLULAR AND VEHICULAR CONGESTION, AS WELL AS AN ADDITIONAL PIPELINE SUPPORTED AT THE BRIDGE BY ANOTHER OPERATOR, WHICH DELAYED COMMUNICATION AND CONFIRMATION OF THE EVENT. THIS SUPPLEMENTAL IS BEING SUBMITTED TO CORRECT THE REPORT TYPE DESIGNATION AS ""FINAL"". NO OTHER CHANGES WERE MADE OR ARE NECESSARY TO THE PREVIOUS SUBMITTAL.
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.