TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 30.54375, -94.86795 |
Cause
| Cause | MATERIAL FAILURE OF PIPE OR WELD |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
AT 1:52PM ON JANUARY 31, 2019, A LOCAL PUMPER NOTIFIED TENNESSEE GAS PIPELINE (TGP) OPERATIONS ABOUT A POTENTIAL LEAK SOUTH OF THE TRINITY RIVER IN SAN JACINTO COUNTY, TEXAS. TGP DISPATCHED OPERATIONS TO THE SITE TO INVESTIGATE. THEY ARRIVED AT 2:10PM AND AT 2:45PM CONFIRMED THAT THE 100-1 LINE WAS LEAKING. THE LINE WAS ISOLATED BY CLOSING MAINLINE VALVES MLV 27-1A AND MLV 27-1 AT 3:00PM. THE LINE WAS THEN BLOWN DOWN TO 0PSIG BY 8:00PM ON JANUARY 31, 2019. DUE TO WET GROUND CONDITIONS AND LOGISTICS, EXCAVATION OF THE LINE BEGAN ON FEBRUARY 2, 2019. THE LEAK WAS DETERMINED TO BE COMING FROM A CRACK IN THE PIPE GIRTH WELD. TO REPAIR THE CRACKED SECTION, THE LINE WAS CUT OUT AND REPLACED. REPAIRS WERE COMPLETED AND THE LINE WAS RETURNED TO SERVICE ON 1:23PM ON FEBRUARY 11, 2019. METALLURGICAL ANALYSIS DETERMINED THAT THE CAUSE OF THE CRACK WAS LACK OF FUSION IN THE PIPE GIRTH WELD DUE TO PIPE MISALIGNMENT DURING WELDING. A 48-HOUR PHONE UPDATE WAS PROVIDED TO THE NRC. THE 48-HOUR NRC REPORT NUMBER IS 1236609.
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.