NORTHERN NATURAL GAS CO

gas_transmission Incident —

Incident Information

Report Date
OperatorNORTHERN NATURAL GAS CO
Commodity—
Pipeline Typegas_transmission

Location

State
Coordinates39.00716, -97.87349

Cause

CauseEQUIPMENT FAILURE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

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

Location Map

Incident Narrative

AT APPROXIMATELY 0650 HOURS, OPERATIONS RECEIVED A HIGH LEL ALARM ON UNIT 6 IN BUILDING NO. 3. WHILE INVESTIGATING THE ALARM, TECHNICIANS DISCOVERED THE FUEL LINE RELIEF VALVE FOR UNIT 6 WAS VENTING. AT 0700 HOURS, THE FAILED SECONDARY FUEL REGULATOR WAS ISOLATED, AND THE VENTING STOPPED. IT WAS DETERMINED THAT THE FUEL REGULATOR FAILED AT APPROXIMATELY 1500 HOURS, NOVEMBER 13, 2024, AND VENTED UNTIL DISCOVERED AT 0700 HOURS, NOVEMBER 14, 2024. THE FAILED REGULATOR HAS BEEN REPAIRED ON 11/15/2024.

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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