TRANSCONTINENTAL GAS PIPE LINE COMPANY
gas_transmission Incident — — January 8, 2013
Incident Information
| Incident Date | January 8, 2013 |
| Operator | TRANSCONTINENTAL GAS PIPE LINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 30.99534, -90.04753 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | NON-THREADED CONNECTION FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $174,620 |
| Emergency Response | $0 |
| Other Costs | $42,510 |
Location Map
Incident Narrative
"PRIMARY CAUSE OF LEAK WAS LOSS OF SUPPORT ON FLANGE RESULTING IN A CRACKED GASKET.TWO CONCRETE SUPPORTS IMMEDIATELY UPSTREAM AND DOWNSTREAM (DISTANCE FROM CENTER OF SUPPORT TO CENTER OF FLANGE APPROXIMATELY 4'-6"") OF THE FLANGE WAS INSPECTED AFTER THE LEAK WAS IDENTIFIED AND BOTH WERE FOUND IN GOOD CONDITION WITH NO SOIL SETTLEMENT. HOWEVER, SOIL SETTLEMENT DID OCCUR IN AN AREA 50' TO 60' DOWNSTREAM OF THE FLANGE SET WHICH CONTRIBUTED TO THE FLANGE GASKET CRACK. THE FLANGE GASKET WAS REPLACED AND ONE ADDITIONAL CONCRETE PIPE SUPPORT WAS INSTALLED 50' DOWNSTREAM OF FLANGE TO PROVIDE ADDITIONAL SUPPORT. PLEASE SEE ATTACHED DOCUMENT FOR SEQUENCE OF LEAK INVESTIGATION EVENTS."
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.