# QUESTAR PIPELINE COMPANY — Gas transmission and gathering — incident on 2013-04-17

- **operation:** document
- **citation:** PHMSA Report 20130039
- **title:** QUESTAR PIPELINE COMPANY — Gas transmission and gathering — incident on 2013-04-17
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2013-05-11
- **effective on:** 2013-04-17
- **summary:** Gas transmission and gathering incident in MOFFAT County, CO. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4500 NATURAL GAS released, $200 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings. PHMSA trend classification: not significant, not serious.
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**body:**

Gas transmission and gathering incident in MOFFAT County, CO. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4500 NATURAL GAS released, $200 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20130039.

Operator ID: 12874.

Reported incident date: 4/17/2013 6:00.

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: ON APRIL 17, 2013 STATELINE COMPRESSOR STATION WENT INTO AN ESD AT 04:05. GAS CONTROL NOTED THE ALARM AND DISPATCHED AN OPERATIONS EMPLOYEE TO THE STATION. WHEN OPERATIONS ARRIVED THEY NOTED THAT THE SUCTION ESD VALVE DID NOT CLOSE. OPERATIONS CLEARED THE ESD AND RESET THE SYSTEM, ENABLING THE ESD VENT VALVE TO CLOSE, WHICH STOPPED THE VENTING GAS. OPERATIONS THEN WORKED ON THE SUCTION ESD VALVE ACTUATOR AND REPAIRED IT, WHICH ENABLED IT TO CLOSE. THE EVENT WAS REPORTED TO THE NRC AT 15:06 ON APRIL 17, 2013. THE WESTERN REGION OF PHMSA AND COLORADO STATE PSC WERE ALSO NOTIFIED.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.

PHMSA indexed costs: $21,487 reported total cost, $17,275.265 in 1984 dollars, $21,466.883 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.
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