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TRANSCONTINENTAL GAS PIPE LINE COMPANY

gas_transmission Incident —

Incident Information

Report Date—
OperatorTRANSCONTINENTAL GAS PIPE LINE COMPANY
Commodity—
Pipeline Typegas_transmission

Location

State
Coordinates30.05861, -90.87167

Cause

CauseMATERIAL FAILURE OF PIPE OR WELD
Subcause—

Casualties

Fatalities0
Injuries0

Costs

Property Damage—
Lost Commodity—
Public/Private Damage—
Emergency Response—
Environmental Remediation—
Other Costs—

Location Map

Incident Narrative

ON MONDAY JULY 30, A LEAK WAS DISCOVERED AT THE 62-30 VALVE SITE, BY A CONTRACTOR WORKING FOR WILLIAMS AT 15:15. HE IMMEDIATELY NOTIFIED MANAGER OF OPERATIONS WHICH INTERN NOTIFIED OPERATIONS AT STATION 63 TO INVESTIGATE. AFTER INVESTIGATION, IT WAS DEEMED A NATURAL GAS LEAK ON THE 36 INCH HEADER SYSTEM UNDER GROUND. THE FLOW WAS REDIRECTED FROM A LINE TO B LINE AND HEADER SYSTEM WAS ISOLATED, LOTO AND BLOWN DOWN. AFTER HEADER WAS BLOWN DOWN, IT WAS CONFIRMED THAT LEAK NO LONGER PRESENT. INVESTIGATION IS ONGOING. THE REPAIR COSTS ARE UNKNOWN AT THIS TIME BUT EXPECT TO EXCEED $50K. OPERATIONS IS WORKING TO DETERMINE IF WE REPAIR IN THE NEAR FUTURE OR DELAY UNTIL PROJECTS SLATED IN 2019 AND 2021 TO BRING THIS SITE ABOVE GROUND. INITIAL NRC REPORT #1219961 ON 7/30/2018 AT 15:53. FOLLOWUP NRC REPORT #1220196 ON 8/1/2018 AT 14:22. A SUPPLEMENTAL/FINAL REPORT WILL BE SUBMITTED WHEN ADDITIONAL COST AND PIPE INFORMATION IS KNOWN AND/OR THE REPAIR IS COMPLETED. 1/17/2019: HEADER SYSTEM IS STILL ISOLATED UNDERGROUND. CAUSE STILL UNKNOWN UNTIL REPLACEMENT (TO BE COMPLETED IN 2019). ENTIRE HEADER SYSTEM REPLACEMENT WAS COMPLETED DECEMBER 2020. PINHOLE WAS FOUND ON ONE OF THE HEADER CAP WELDS. NO FORMAL INVESTIGATION.

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.

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