TENNESSEE GAS PIPELINE COMPANY — Gas transmission and gathering — incident on 2016-12-19

Gas transmission and gathering incident in Not Within a Municipality, WAYNE County, TN. Reported cause: NATURAL FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 24861 NATURAL GAS released, $0 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: 20170002.

Operator ID: 19160.

Reported incident date: 12/19/2016 3:20.

Location detail: MP 10, 1480'

Cause detail: TEMPERATURE

Cause detail: 12/19/2016; TGP STATION 555 IS OFF LINE; 3:20 AM, A FAULT OCCURRED IN "B" BUILDING RESULTING WITH AN ESD OF STATION 555 YARD PIPING; NOTIFIED BY GAS CONTROL, COMPANY EMPLOYEES ARRIVED AT STATION 555 AT 3:50 AM AND BEGAN CLOSING VALVES; VALVE AD-1 FOUND NOT CLOSED FOLLOWING ESD FUNCTION; WITH THE COLD WEATHER, FREEZING WATER IN VALVE OPERATOR GEAR BOX OF VALVE AD-1 ALLOWED REPORTABLE VOLUME OF NATURAL GAS RELEASED TO ATMOSPHERE. VALVE AD-1 WAS CLOSED AT 4:05 AM. GREASE WAS PLACED IN THIS GEAR BOX AS WELL AS THOSE OF OTHER APPLICABLE VALVES TO PREVENT SIMILAR EVENTS IN THE FUTURE. (PIR CALCULATED ON 36-INCH PIPE)

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: NATURAL FORCE DAMAGE — TEMPERATURE.

PHMSA indexed costs: $66,795 reported total cost, $70,974.184 in 1984 dollars, $87,299.114 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.