TENNESSEE GAS PIPELINE CO (EL PASO)
gas_transmission Incident — — September 19, 2011
Incident Information
| Incident Date | September 19, 2011 |
| Operator | TENNESSEE GAS PIPELINE CO (EL PASO) |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 29.09711, -93.34997 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | THREADED CONNECTION/COUPLING FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $122,500 |
| Emergency Response | $3,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
WHILE ABANDONING ITS 509A-2900 OFFSHORE PIPELINE, TENNESSEE GAS PIPELINE (TGP) COMPANY'S CONTRACTED DIVERS WERE UNCOVERING A MATTED (""BURIED"" WITH SANDBAGS) VALVE ASSEMBLY TO CLOSE A SIDE VALVE AND DISCOVERED A MINOR LEAK COMING FROM THE THREADS ON A 1-INCH NIPPLE AT THE BODY OF A DIFFERENT SIDE VALVE IN THE UNDERWATER ASSEMBLY. THIS FABRICATED ASSEMBLY WAS ABOUT 40 FEET IN LENGTH AND COULD BE ISOLATED SUCH THAT GAS LOSS WAS VERY MINIMAL. REPAIRS WERE MADE BY REPLACING THE COMPONENT WITH A NEW 1-INCH NIPPLE AND VALVE (INTENDED FOR BODY BLEED).
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.