DTE GAS COMPANY — Gas transmission and gathering — incident on 2018-10-22

Gas transmission and gathering incident in Not Within a Municipality, KALKASKA County, MI. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 8650 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: 20180120.

Operator ID: 12408.

Reported incident date: 10/22/2018 8:21.

Location detail: GOOSE CREEK

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: FAILURE OF ELECTRICAL FUSE CAUSED SIGNAL FROM CONTROL PANEL TO INITIATE STATION ESD. AT THE TIME OF THE EVENT A FUEL SOURCE FROM OUTSIDE THE COMPRESSOR BLOCK VALVES WAS SUPPLYING AN AUXILIARY HEATING BOILER, AND THE FUEL SYSTEM FED BACK INTO THE STATION BLOW-DOWN SYSTEM.

PHMSA trend classification: not significant, not serious.

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

PHMSA indexed costs: $25,240 reported total cost, $23,341.209 in 1984 dollars, $28,954.394 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.