MIDWESTERN GAS TRANSMISSION CO
gas_transmission Incident — — November 19, 2024
Incident Information
| Incident Date | November 19, 2024 |
| Operator | MIDWESTERN GAS TRANSMISSION CO |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 39.78075, -87.65147 |
Cause
| Cause | MATERIAL FAILURE OF PIPE OR WELD |
| Subcause | "DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED" |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $182,000 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"11/18/2024 AT 13:30 HOURS, A PIPELINE OPERATOR WAS CONDUCTING A ROUTINE INSPECTION AND DISCOVERED A LEAK ON PIPELINE M2115-1. THE PIPELINE WAS ISOLATED AND LESS THAN 3 MMCF WAS RELEASED. THE PIPELINE WAS EXCAVATED, AND A CRACK WAS LOCATED NEAR IN THE HEAT AFFECTED ZONE OF A FILLET WELD AT THE 6 O'CLOCK POSITION. THE CRACK WAS ON THE 30"" MAINLINE PIPING ADJACENT TO A SPHERICAL TEE THAT WAS INSTALLED FOR A PIPELINE HOT TAP. DETERMINATION WAS MADE THAT THE REPAIR WOULD EXCEED THE REPORTING THRESHOLD OF $145,400 AND NOTIFICATION WAS MADE TO THE NRC AT 11:20 AM ON 11/19/24. THE SPHERICAL TEE WAS REMOVED, AND A BARRED TEE WAS INSTALLED ON SUNDAY,11/24/24. THE PIPELINE WAS PLACED BACK INTO SERVICE ON MONDAY, 11/25/24. A THIRD-PARTY FAILURE ANALYSIS WAS PERFORMED ON THE COMPONENT. THE ROOT CAUSE WAS IDENTIFIED AS AN ISSUE IN THE WELDING PROCESS. CONTRIBUTING FACTORS INCLUDED INSUFFICIENT PRE-HEAT AND LACK OF CLEANLINESS IN THE FILLET WELD."
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.