TRANSCONTINENTAL GAS PIPE LINE COMPANY

gas_transmission Incident —

Incident Information

Report Date
OperatorTRANSCONTINENTAL GAS PIPE LINE COMPANY
Commodity—
Pipeline Typegas_transmission

Location

State
Coordinates36.34193, -79.81904

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

THE CAUSE OF THE INCIDENT WAS UNINTENDED VALVE MOVEMENT. THE FUEL GAS BLOWDOWN VALVE ON THE TURBINE OPENED WHILE THE SUPPLY WAS ALSO OPEN. BLOWDOWN VALVE IS A 2-INCH PLUG. NO ALARMS WERE ASSOCIATED WITH THE EVENT. THE INVESTIGATION PERFORMED DETERMINED ONE OF THE CONTRIBUTING FACTORS WAS THE LACK OF AN ALARM WHEN THE BLOWDOWN VALVE WAS OUT OF POSITION SUCH THAT THE OPERATOR WOULD NOT HAVE BEEN ABLE TO RECOGNIZE THE VALVE WAS OUT OF POSITION. ALARM INSTALLATION SCHEDULED ALREADY. FUEL GAS LOGIC AND ALARM INSTALLATION HAS BEEN COMPLETED.

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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