TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — June 28, 2019
Incident Information
| Incident Date | June 28, 2019 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 30.32021, -95.15906 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,000 |
| Emergency Response | $2,800 |
| Other Costs | $5,050 |
Location Map
Incident Narrative
AT 00:22-HOUR AN EMERGENCY SHUTDOWN (ESD) OCCURRED AT STATION 25. PROPER NOTIFICATIONS WERE MADE AND ON-CALL EMPLOYEES ARRIVED ON SITE AT 00:49-HOUR AND FOUND GAS VENTING THEREBY CONFIRMING THE EVENT. EMPLOYEES CLOSED THE NECESSARY VALVES TERMINATING THE RELEASE OF NATURAL GAS. AN INVESTIGATION OF THE EVENT PROMPTLY BEGAN. A FAULTY MODULE IN THE PLC WAS DISCOVERED WHICH INITIATED THE ESD. THE MODULE WAS REPLACED POST-INCIDENT. ALSO IT WAS ALSO DETERMINED THE POWER GAS REGULATOR TO THE OPERATOR OF VALVE BS-2 HAD MALFUNCTIONED CAUSING THE VALVE TO REMAIN OPEN INSTEAD OF CLOSING PROPERLY FOR THE ESD. TRASH WAS FOUND IN THE POWER GAS REGULATOR CAUSING IT TO MALFUNCTION. THE POWER GAS REGULATOR WAS REPLACED POST-INCIDENT. ALL REGULATORS INVOLVING POWER GAS TO VALVE OPERATORS IN THE ESD SYSTEM AND THE ESD VALVES WERE INSPECTED POST-INCIDENT.
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.