COLORADO INTERSTATE GAS CO
gas_transmission Incident —
Incident Information
| Report Date | — |
| Operator | COLORADO INTERSTATE GAS CO |
| Commodity | — |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 41.46804, -111.49279 |
Cause
| Cause | NATURAL FORCE DAMAGE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
COLORADO INTERSTATE GAS (CIG) COMPANY GAS CONTROL EMPLOYEES NOTICED A PRESSURE DIFFERENTIAL ON THE 42"" RUBY PIPELINE DURING THE EARLY EVENING OF DECEMBER 10, 2011. FIELD OPERATIONS EMPLOYEES WERE DISPATCHED TO MLV 6 AND FOUND A FIRE IN PROGRESS AT THE VALVE SITE. THE AFFECTED SEGMENT WAS ISOLATED AND BLOWN DOWN IN ORDER TO EXTINGUISH THE FIRE. THE ENSUING INVESTIGATION DETERMINED THAT THE LIKELY CAUSE OF THE INCIDENT WAS EARTH SETTLEMENT STRESSING A 1-INCH POWER GAS LINE WHICH BROKE, RELEASED GAS, AND IGNITED. THE SOURCE OF THE IGNITION IS BELIEVED TO BE THE ONSITE THERMOELECTRIC GENERATOR (TEG). PREVAILING WIND IS BELIEVED TO HAVE CARRIED THE RELEASED GAS TOWARD THE TEG, WHERE IT IGNITED, WITH SECONDARY FIRES SPREADING TO OTHER EQUIPMENT AT THE SITE. THE PIPELINE HAS BEEN REPAIRED AND PLACED BACK INTO SERVICE. PLEASE NOTE THAT FORM WOULD NOT ACCEPT THE DIGITS REQUIRED FOR THE ACTUAL VOLUME OF GAS IN PART A, QUESTION 11. THE ACTUAL VOLUME IS 181,055 MCF OR 181.055 MMCF.
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.