"ONEOK GAS TRANSPORTATION, LLC"
gas_transmission Incident — — January 2, 2021
Incident Information
| Incident Date | January 2, 2021 |
| Operator | "ONEOK GAS TRANSPORTATION, LLC" |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.72806, -98.80139 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | OTHER INCORRECT OPERATION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"10/20/22 UPDATE: ADDED COUNTY 5/21/21 UPDATE: JAN. 2ND, 2021 ONEOK EMPLOYEE IDENTIFIED THE OGT THOMAS COMPRESSOR WAS VENTING GAS TO ATMOSPHERE AT APPROXIMATELY 9:20AM. EMPLOYEE INITIATED ESD OF THE STATION AT 9:34AM. THE STATION LOGS IDENTIFIED VENTING BEGAN APPROXIMATELY AT 12:39AM. IT WAS DETERMINED THAT LOSS OF INSTRUMENT AIR ALLOWED THE STATION ESD SUCTION & DISCHARGE VENT VALVES TO OPEN RELEASING GAS. THE ONEOK INVESTIGATION DISCOVERED THE LOSS OF INSTRUMENT AIR WAS NOT IDENTIFIED BECAUSE THE INSTRUMENT AIR PRESSURE TRANSMITTER MANIFOLD VALVE WAS FOUND IN CLOSED POSITION. AN ONEOK EMPLOYEE HAD INSPECTED THE VALVE IN APRIL AND THE VALVE WAS IN THE CORRECT POSITION. SINCE APRIL THERE WAS NUMEROUS MAINTENANCE AND CONSTRUCTION ACTIVITIES AT THOMAS COMPRESSOR FACILITY. KNOWING THE VALVE WAS IN THE PROPER POSITION IN APRIL, THEN CLOSED AT THE TIME OF THE RELEASE, WITH THE OTHER ACTIVITIES THAT TOOK PLACE AT THE FACILITY, ONEOK IS UNABLE TO DETERMINE WHO CLOSED THE VALVE OR WHEN THE VALVE WAS CLOSED. AFTER COMPLETION OF THE INVESTIGATION, THE THOMAS COMPRESSOR WAS RETURNED TO SERVICE."
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.