TRANSCONTINENTAL GAS PIPE LINE COMPANY
gas_transmission Incident — — June 30, 2017
Incident Information
| Incident Date | June 30, 2017 |
| Operator | TRANSCONTINENTAL GAS PIPE LINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 29.21173, -92.60782 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | INTERNAL CORROSION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $300,000 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"B.S.E.E. REPORTED BUBBLES IN THE VACITNITY OF VERMILION AREA (VA) BLOCKS 101 AND 81 LATE AFTERNOON ON 6/30/17. OPERATIONS MADE THE INTIAL FLIGHT OVER THE AREA AND THEN CLOSED THE TOPSIDE BLOCK VALVE AT THE VA-66 PLATFORM AND THE TOPSIDE BLOCK VALVE A THE VA-78 PLATFORM. A SECOND FLIGHT WAS MADE THE NEXT MORNING ON 7/1/17 AND BUBBLES WERE STILL PRESENT ALONG WITH A PRESSURE DROP ON THE SHUT IN PIPELINE. A DIVE BOAT WAS SECURED WITH PERSONNEL, TOOLS, AND A TEMPORARY BOLT ON LEAK CLAMP. DIVE BOAT AND PERSONNEL ARRIVED ON LOCATION AT VA-82 BUBBLES AT 22:15 ON 7/2/17. PIPE LEAK LOCATED BY DIVER AT 01:35 ON 7/3/17; COATING WAS REMOVED AND LEAK WAS MARKED WITH A BOUY. SUBSEA TIE-IN ASSEMBLY BALL VALVE WAS LOCATED IN VA-81 DOWNSTREAM OF THE LEAK AND CLOSED AT 07:07 ON 7/4/17. BOLT ON LEAK CLAMP WAS INSTALLED IN VA-82 AND LEAK STOPPED AT 18:45 ON 7/4/17. VA-66 AND VA-78 PLATFORM VAVLES WERE OPENED AT 10:00 ON 7/5/17."
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.