# EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2019-04-04

- **operation:** document
- **citation:** PHMSA Report 20190054
- **title:** EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2019-04-04
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2019-05-03
- **effective on:** 2019-04-04
- **summary:** Gas transmission and gathering incident in OAK RIDGE, ANDERSON County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 3138 NATURAL GAS released, $1,000 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: not significant, not serious.
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**body:**

Gas transmission and gathering incident in OAK RIDGE, ANDERSON County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 3138 NATURAL GAS released, $1,000 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: 20190054.

Operator ID: 4070.

Reported incident date: 4/4/2019 21:17.

Location detail: 9.377

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: ORIGINAL REPORT: 48 HR NRC REPORT 1242022 AT APPROXIMATELY 9:17 PM EST ON APRIL 4, 2019, EAST TENNESSEE NATURAL GAS (ETNG) WAS NOTIFIED BY A UTILITY COMPANY EMPLOYEE ABOUT A NATURAL GAS RELEASE AT ETNG'S METER AND REGULATOR STATION (M&R 59021) IN ANDERSON COUNTY, TN. ETNG PERSONNEL ARRIVED AT M&R 59021 AT APPROXIMATELY 9:58 PM EST AND DISCOVERED NATURAL GAS RELEASE FROM A RELIEF VALVE. ETNG PERSONNEL SUBSEQUENTLY ISOLATED THE RELIEF VALVE. THE APPARENT CAUSE WAS A COLLAPSED SUPPLY GAS FILTER ON THE UPSTREAM REGULATOR THAT STOPPED THE SUPPLY GAS TO THE BOOT AND RESULTING IN THE REGULATOR TO FAIL OPEN.

PHMSA trend classification: not significant, not serious.

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

PHMSA indexed costs: $8,720 reported total cost, $8,472.227 in 1984 dollars, $10,981.197 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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