TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — February 3, 2024
Incident Information
| Incident Date | February 3, 2024 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 34.45304, -89.83759 |
Cause
| Cause | MATERIAL FAILURE OF PIPE OR WELD |
| Subcause | "DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED" |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $150,000 |
| Emergency Response | $2,600 |
| Other Costs | $2,241,951 |
Location Map
Incident Narrative
"OPERATOR RECEIVED A CALL AT 1:06AM ON 2/3/2024 FROM A RESIDENT NEAR SARDIS MS. RESIDENT STATED THAT THEY HEARD NOISE COMING FROM THE DIRECTION OF THE PIPELINE. PERSONNEL WAS DISPATCHED TO THE SITE. DISCOVERY OF THE INCIDENT OCCURRED AT 2:11AM. SEGMENT WAS ISOLATED AND BLOWN DOWN. UPON EXCAVATION, THREE WRINKLE BENDS WERE FOUND AT THE INCIDENT SITE. INVESTIGATION IS ONGOING; THE FAILED PIPE WAS SENT FOR METALLURGICAL ANALYSIS. PHMSA HAS ISSUED CPF2-2024-009-CAO. 7/3/2024: THE METALLURGICAL ANALYSIS WAS COMPLETED IN APRIL 2024, WITH THE FINAL REPORT BEING ISSUED MAY 29, 2024. THE METALLURGICAL ANALYSIS CONCLUDED THAT THE LEAK EVENT WAS CAUSED BY THE FORMATION OF A CIRCUMFERENTIAL CRACK RUNNING ALONG THE HIGHEST POINT OF A WRINKLE BEND. METALLURGICAL ANALYSIS CONSISTED OF VISUAL EXAMINATION, TESTING OF MECHANICAL PROPERTIES, CHEMISTRY, AND CHARPY IMPACT TOUGHNESS. BASED ON THE TESTS, ALL MECHANICAL PROPERTIES WERE FOUND TO BE CONSISTENT WITH API STANDARDS AT THE TIME OF PIPELINE CONSTRUCTION. THE TWO KEY MECHANISMS THAT CAUSED THE INITIATION AND GROWTH OF THESE CRACKS ARE HIGHER DENSITY OF HYDROGEN TRAPS WITHIN THE ID MICROSTRUCTURE, AS SUBSTANTIATED BY THE PRESENCE OF ID SECONDARY CRACKING, IN ADDITION TO POSSIBLY LOW TEMPERATURES. 6/2/2025: THE ROOT CAUSE FAILURE ANALYSIS (RCFA) AND REMEDIAL WORK PLAN WAS COMPLETED AND SUBMITTED TO PHMSA ON 7/10/2024. ON 3/10/2025, THE CAO DOCUMENTATION REPORT (CDR) WAS COMPLETED AND SUBMITTED TO PHMSA. ON 3/28/2025 TENNESSEE GAS PIPELINE COMPANY (TGP) RECEIVED A CLOSURE LETTER FROM PHMSA OF THE CPF 2-2024-009-CAO."
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.