ONEOK WESTEX TRANSMISSION, LLC
gas_transmission Incident — — May 23, 2019
Incident Information
| Incident Date | May 23, 2019 |
| Operator | ONEOK WESTEX TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 31.98900, -102.48400 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
AT APPROXIMATELY 20:30 ON 5/23/2019, THE HIGH TURBO TEMPERATURE ALARM INITIATED AN ENGINE SHUTDOWN FOR THE NUMBER 3 COMPRESSOR AT THE ONEOK WESTEX TRANSMISSION, ECTOR COUNTY COMPRESSOR STATION. AS THE COMPRESSOR SHUT DOWN THE STATION ALARM CONTROL LOGIC FAILED TO AUTOMATICALLY CLOSE THE SUCTION VALVE TO THE COMPRESSOR. FAILURE TO CLOSE THE SUCTION VALVE CAUSED 5232 MCF OF NATURAL GAS TO BE RELEASED THROUGH THE VENT VALVE.THE RELEASE WAS IDENTIFIED BY ONEOK OPERATIONS TEAM MEMBERS WHEN THEY ARRIVED ON SITE AT 07:00 ON 5/24 AND REVIEWED THE STATION CONTROL LOG. ONEOK TECHNICIANS REVIEWED THE PROGRAMMING LOGIC FOR THE CONTROLS OF THE COMPRESSOR. CORRECTIONS WERE MADE TO THE UNITS PROGRAMMING TO INSURE THE SUCTION VALVE CLOSES WHENEVER SHUT DOWN BY AN ALARM; TO PROHIBIT THIS EVENT FROM REOCCURRING.
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.