"OKLAHOMA NATURAL GAS COMPANY, A DIVISION OF ONE GAS, INC."
gas_transmission Incident — — January 31, 2019
Incident Information
| Incident Date | January 31, 2019 |
| Operator | "OKLAHOMA NATURAL GAS COMPANY, A DIVISION OF ONE GAS, INC." |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 36.13349, -95.88682 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | OTHER INCORRECT OPERATION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $265,000 |
| Emergency Response | $25,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
"A RECENT PIPELINE CONSTRUCTION PROJECT REPLACED PART OF AN ORIGINALLY ALL-WELDED 16-INCH PIPELINE INSTALLED IN 1955. ALTHOUGH OPERATOR RECORDS EXISTED, THE PROJECT DESIGNERS AND REVIEWERS FAILED TO IDENTIFY THAT TWO COUPLINGS HAD LATER BEEN INSTALLED IN 1959. THE CURRENT REPLACEMENT PROJECT CREATED A 90-DEGREE OFFSET IN THE ORIGINAL PIPELINE ROUTE NEAR THE MOST PROXIMATE BURIED COUPLING, AND THE NEW PIPE CONFIGURATION INCREASED THE COUPLING'S AXIAL STRESS. BECAUSE THE EXISTENCE OF THE COUPLINGS WAS NOT NOTED, THE OPERATOR'S PRACTICE TO IMPROVE THE COUPLING'S RESTRAINT SYSTEM, NEAR THE NEWLY INSTALLED 90-DEGREE ELBOW, WERE NOT FOLLOWED AND THE BURIED COUPLING SEPARATED AT NORMAL OPERATING PRESSURE INTO THE PROXIMATE CONSTRUCTION TIE-IN POINT EXCAVATION WHICH WAS STILL OPEN. CORRECTIVE ACTIONS INCLUDE COMPLETING ADDITIONAL ENGINEERING REVIEW OF ACTIVE PROJECTS AND ADDITIONAL TRAINING."
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.