CENTERPOINT ENERGY GAS TRANSMISSION
gas_transmission Incident — — February 16, 2010
Incident Information
| Incident Date | February 16, 2010 |
| Operator | CENTERPOINT ENERGY GAS TRANSMISSION |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 35.70840, -99.90703 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | THREADED CONNECTION/COUPLING FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $3,838 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
AT APPROXIMATELY 08:18 HRS ON FEBRUARY 22, A FIELD EMPLOYEE WAS PERFORMING ANNUAL VALVE MAINTENANCE ON AUXILIARY VALVE ON CEGT LINE AD-WEST. HE CONNECTED A CRESCENT WRENCH TO A 1'X 1/2 ' SWEDGE CONNECTION FOR THE 1/2 ' BALL VALVE AND IMMEDIATELY STARTED HEARING GAS LEAKING. HE NOTIFIED SYSTEM CONTROL AT 08:25 HRS. IT WAS FIRST THOUGHT THAT THE EVENT WOULD BE CORRECTED WITH MINOR COMPLICATIONS. HOWEVER, AFTER EVALUATING THE SITUATION ALONG WITH FIELD EMPLOYEES, MANAGEMENT AND SYSTEM CONTROL IT WAS DECIDED THAT LINE AD-WEST WOULD HAVE TO BE BLOWN DOWN TO COMPLETE THE REPAIRS (APPROXIMATELY 10:18 HRS). SYSTEM CONTROL CALCULATED THE LINE FILL AND IT WAS DETERMINED THAT THE BLOW DOWN WOULD BE @ 12,427 MCF VALUED AT $65,863. SYSTEM CONTROL THEN NOTIFIED THE NRC AT 11:42. THE LINE WAS BLOWN DOWN REPAIRS MADE AND THE LINE WAS BACK IN SERVICE BY 23:20 HRS.
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.