# EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2016-04-28

- **operation:** document
- **citation:** PHMSA Report 20160041
- **title:** EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2016-04-28
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2016-05-27
- **effective on:** 2016-04-28
- **summary:** Gas transmission and gathering incident in Not Within a Municipality, MAURY County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4639 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 Not Within a Municipality, MAURY County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4639 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: 20160041.

Operator ID: 4070.

Reported incident date: 4/28/2016 21:50.

Location detail: 6.38

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: AT 9:50 PM ON APRIL 28, 2016 A REGULATOR DIAPHRAGM AT THE EAST TENNESSEE NATURAL GAS MT. PLEASANT REDUCING STATION IN MAURY COUNTY, TENNESSEE DEVELOPED A TEAR WHICH CAUSED THE DOWNSTREAM PRESSURE TO INCREASE ABOVE THE RELIEF VALVE SET POINT PRESSURE RESULTING IN A RELEASE OF NATURAL GAS. APPROXIMATELY 100 PEOPLE WERE EVACUATED FROM THE VICINITY BY EMERGENCY RESPONSE OFFICIALS AS A PRECAUTION. SPECTRA ENERGY PERSONNEL SUBSEQUENTLY ISOLATED THE FACILITIES HALTING THE NATURAL GAS DISCHARGE.

PHMSA trend classification: not significant, not serious.

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

PHMSA indexed costs: $10,278 reported total cost, $10,375.738 in 1984 dollars, $13,354.219 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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