M6 MIDSTREAM LLC
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | M6 MIDSTREAM LLC |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 31.72432, -95.71546 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
THE ANDERSON COUNTY 12"" OR TC-12 PIPELINE SYSTEM IS A NATURAL GAS TRANSMISSION PIPELINE LOCATED IN ANDERSON, HENDERSON AND HOUSTON COUNTIES IN TEXAS. ON FEBRUARY 10, 2024, M6 MIDSTREAM LLC FIELD PERSONNEL WERE NOTIFIED BY OUR CONTROL CENTER THAT THERE WERE SOME PRESSURE DISCREPANCIES ON THE TC-12 PIPELINE SYSTEM LOCATED IN ANDERSON COUNTY, TEXAS. UPON INVESTIGATION, M6 FIELD PERSONNEL ASSUMED THAT THERE COULD BE A PIPELINE LEAK ON THE TC-12 PIPELINE SYSTEM AND BEGIN ISOLATING THE PIPELINE SYSTEM. THE TC-12 PIPELINE SYSTEM WAS ISOLATED AND FIELD PERSONNEL COMMENCED BLOW DOWN OPERATIONS. DUE TO SEVERE WEATHER CONDITIONS (HIGH WINDS, THUNDERSTORM, LIGHTNING AND LOCALIZED FLOODING), AND NO AMBIENT LIGHTING, THE LEAK LOCATION WAS NOT CONFIRMED UNTIL FEBRUARY 11, 2024.ON FEBRUARY 11, 2024, UPON VISUAL INSPECTION OF FAILURE SITE IT WAS DETERMINED THAT THE LEAK WOULD BE ABOVE THE REPORTABLE THRESHOLD AMOUNT OF GAS LOSS (> 3MMCFD) PER 191.3, SO NOTIFICATIONS WERE MADE AT THIS POINT. THE PIPELINE SEGMENT INVOLVED AT THE SITE OF THE FAILURE WAS SENT TO A THIRD-PARTY TESTING FACILITY TO DETERMINE THE CAUSE OF FAILURE. THE LAB RESULTS CONCLUDED THE LOCALIZED FAILURE WAS DUE TO ENVIRONMENTALLY ASSISTED CRACKING CAUSED BY EXTERNAL HYDROGEN EMBRITTLEMENT.
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.