NORTHERN NATURAL GAS CO

gas_transmission Incident —

Incident Information

Report Date
OperatorNORTHERN NATURAL GAS CO
Commodity—
Pipeline Typegas_transmission

Location

State
Coordinates37.68209, -98.46822

Cause

CauseCORROSION FAILURE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

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

Location Map

Incident Narrative

ON SEPTEMBER 27, 2017 WHILE CUNNINGHAM PERSONNEL WERE PERFORMING THE ROUTINE ANNUAL GAS LEAK SURVEY THEY FOUND ELEVATED GAS LEVELS IN THE AREA OF THE MAINLINE DRIP IDENTIFIED AS V-1030. FURTHER INVESTIGATION FOUND THAT THE 2-INCH DRAIN LINE FOR V-1030 HAD BEEN LEAKING. THE LINE WAS REMOVED FROM SERVICE AND ABANDONED. A NEW LINE WAS INSTALLED ON SEPTEMBER 30, 2017. THE ABANDONED 2-INCH PIPE WAS NEVER EXCAVATED OR EXAMINED FOR THE EXACT CAUSE OF THIS GRADE 3 LEAK. WE SUSPECT INTERNAL CORROSION.

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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