# CENTERPOINT ENERGY RESOURCES CORP., DBA CENTERPOINT ENERGY MINNESOTA GAS — Gas transmission and gathering — incident on 2014-03-02

- **operation:** document
- **citation:** PHMSA Report 20140041
- **title:** CENTERPOINT ENERGY RESOURCES CORP., DBA CENTERPOINT ENERGY MINNESOTA GAS — Gas transmission and gathering — incident on 2014-03-02
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2014-04-17
- **effective on:** 2014-03-02
- **summary:** Gas transmission and gathering incident in EDINA, HENNEPIN County, MN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 1 NATURAL GAS released, $300,000 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: significant incident, not serious.
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**body:**

Gas transmission and gathering incident in EDINA, HENNEPIN County, MN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 1 NATURAL GAS released, $300,000 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: 20140041.

Operator ID: 12350.

Reported incident date: 3/2/2014 20:50.

Location detail: STATION 16+44

Cause detail: NON-THREADED CONNECTION FAILURE

Cause detail: CENTERPOINT ENERGY RESPONDED TO AN ODOR COMPLAINT ON MARCH 2, 2014. INVESTIGATION REVEALED THE SOURCE TO BE A 24" DRESSER STYLE 38 COUPLING. DURING EXCAVATION THE COUPLING STOPPED LEAKING. A 24" COVER SLEEVE WAS INSTALLED OVER THE COUPLING. THERE WAS NO CORROSION EVIDENT ON THE PIPE AND CORROSION WAS RULED OUT BY X-RAYS AND ULTRASONIC TESTING. THE PIPE WAS IN GOOD CONDITION. GAS WAS MIGRATING. EXCAVATED TO SECOND COUPLING BUT FOUND NO LEAK. COVER SLEEVE WAS INSTALLED ON SECOND COUPLING PER AGREEMENT WITH MNOPS TO INSTALL COVER SLEEVES ON EXPOSED COUPLINGS.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — NON-THREADED CONNECTION FAILURE.

PHMSA indexed costs: $365,211 reported total cost, $185,353.574 in 1984 dollars, $456,288.566 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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