COLUMBIA GAS TRANSMISSION, LLC
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | COLUMBIA GAS TRANSMISSION, LLC |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 38.12422, -78.25704 |
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
AN EMAT IN-LINE INSPECTION REPORT FOR PIPELINE VM-107 WAS REVIEWED ON NOVEMBER 29, 2023. THIS REPORT RESULTED IN IDENTIFYING AN ANOMALY LOCATED BETWEEN VALVES MLV-2A AND MLV-3A. THIS SECTION WAS ISOLATED, AND THE OPERATING PRESSURE WAS DROPPED BY 20% TO 611 PSIG. A LOW VOLUME LEAK WAS FOUND DURING THE ANOMALY INVESTIGATION. THE ISOLATED SECTION OF PIPELINE WAS THEN REDUCED TO 50 PSIG BY VENTING TO ATMOSPHERE AT GOOCHLAND COMPRESSOR STATION. TC ENERGY REPAIRED THE ANOMALY UTILIZING A TYPE B SLEEVE. UPON COMPLETION OF THE REPAIR PIPELINE VM-107 WAS RETURNED TO NORMAL OPERATING PRESSURE AND RETURNED TO SERVICE. THE SOURCE OF THE LOW VOLUME LEAK WAS DETERMINED TO BE THE TARGET ANOMALY WHICH WAS THROUGH WALL STRESS CORROSION CRACK THAT WAS REPAIRED WITH THE TYPE B SLEEVE AS MENTIONED ABOVE.
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.