COLUMBIA GULF TRANSMISSION, LLC
gas_transmission Incident — — November 19, 2014
Incident Information
| Incident Date | November 19, 2014 |
| Operator | COLUMBIA GULF TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 37.31000, -85.06114 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | COMPRESSOR OR COMPRESSOR-RELATED EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $500 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON NOVEMBER 19TH, 2014, A COLUMBIA GULF TRANSMISSION, LLC (COLUMBIA) COMPRESSOR STATION (CS) WAS SUBJECT TO AN UNINTENDED LOSS OF NATURAL GAS (MATERIAL) THROUGH AN 8-IN BLOW-OFF VALVE. THIS EVENT OCCURRED AT THE COLUMBIA CLEMENTSVILLE CS LOCATED IN CASEY COUNTY, NEAR THE TOWN OF LIBERTY, KY. THE EVENT THAT LED TO AN UNINTENDED RELEASE OF MATERIAL EXCEEDING 3,000 MCF WAS REPORTED TO THE NATIONAL RESPONSE CENTER ACCORDINGLY. ONCE THE ROOT CAUSE ANALYSIS INVESTIGATION HAD BEEN PERFORMED, IT WAS DETERMINED THAT THE BLOW-OFF VALVE FAILED TO CLOSE WHEN COMMANDED DUE TO AN UNDETECTED OPEN CIRCUIT IN THE SOLENOID COIL. ELEVATED RESISTIVITY WAS MEASURED ON THE SOLENOID COIL WIRING AND MOISTURE WAS DETECTED IN ITS ENCLOSURE. MOISTURE WAS REMOVED, RETESTED WHERE IT DISPLAYED NORMAL RESISTIVITY LEVELS. COVER PLATE WAS INSTALLED WITH PROPER SEALANT TO AVOID MOISTURE FROM ACCUMULATING INSIDE THE SOLENOID COIL WIRING ENCLOSURE. THEREAFTER, A FULL SYSTEM CHECK WAS PERFORMED BEFORE RETURNING THE CS BACK INTO SERVICE.
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.