TENNESSEE GAS PIPELINE CO (EL PASO)
gas_transmission Incident — — March 14, 2011
Incident Information
| Incident Date | March 14, 2011 |
| Operator | TENNESSEE GAS PIPELINE CO (EL PASO) |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 31.99190, -88.93150 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | INTERNAL CORROSION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $100,000 |
| Emergency Response | $17,000 |
| Other Costs | $50,000 |
Location Map
Incident Narrative
A LOCAL LANDOWNER NOTIFIED TENNESSEE GAS PIPELINE (TGP) COMPANY GAS CONTROL PERSONNEL OF A SUSPECTED LEAK THAT TURNED OUT TO BE AT THE DRIP ASSEMBLY OFF OF TGP'S 500-2 PIPELINE IN THE BARNETT COMMUNITY NEAR PACHUTA, MISSISSIPPI. TGP FIELD PERSONNEL RESPONDED TO ISOLATE AND BLOW DOWN THE VALVE SECTION AS LOCAL RESIDENTS WERE EVACUATED AS A PRECAUTION BY LOCAL EMERGENCY RESPONDERS. THE LEAKING DRIP ASSEMBLY HAS SINCE BEEN REMOVED AND REPLACED WITH STRAIGHT LINE PIPE (36"" OD) AND THE SEGMENT WAS RETURNED TO SERVICE. INVESTIGATION AND METALLURGICAL ANALYSIS CONCLUDED THAT THE CAUSE WAS ELECTROCHEMICAL CORROSION AS A RESULT OF POOR INTERNAL COATING APPLICATION, INADEQUATE COATING ADHESION, AND INTERNAL CONDITIONS CONDUCIVE TO ELECTROCHEMICAL CORROSION. SALT AND WATER WERE ALSO FOUND IN THE SLUDGE COLLECTED FROM THE DRIP.
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.