PUBLIC SERVICE CO OF COLORADO
gas_transmission Incident — — November 11, 2012
Incident Information
| Incident Date | November 11, 2012 |
| Operator | PUBLIC SERVICE CO OF COLORADO |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 39.85065, -106.07956 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | EXTERNAL CORROSION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $51,786 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON 11/11/12 AT APPROXIMATELY 15:00 THERE WAS AN UNINTENTIONAL RELEASE OF 3,989 MCF (SEE PART A, #10) OF NATURAL GAS FROM AN 8 INCH STEEL TRANSMISSION LINE, OPERATING AT 752 PSIG. SERVICE WAS SHUT DOWN AT APPROXIMATELY 17:00 ON 11/11/12 AND RESTORED ON 11/12/12 AT APPROXIMATELY 09:00. THE RUPTURE WAS CAUSED BY EXTERNAL GALVANIC CORROSION ATTRIBUTED TO A COATING FLAW (A HOLIDAY OR DISBONDED REGION) THAT ERODED WALL THICKNESS BELOW THRESHOLD TO CONTAIN OPERATION PRESSURE.
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.