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Home > Nuclear Reactors
> Plant Specific Items of Interest
> Vermont
Yankee
> Fire in the Main Transformer
Fire in the Main Transformer
At 6:50 a.m. on the morning of Friday, June 18, 2004, Vermont Yankee
Generating Station declared an "Unusual Event" as a result of
a fire in the main transformer (which lasted more than 10 minutes) and
a resultant reactor trip (generator load reject). The fire was extinguished
by 7:51 a.m., through the combined efforts of the automatic fire suppression
system, the site's fire brigade, and the local volunteer fire department.
The NRC's resident inspectors immediately responded to the event, and
the Region I Incident Response Center was staffed to support the residents
and follow the licensee's response to the fire. There were no complications
associated with the reactor shutdown, and no indication of malevolent
acts. The licensee, Entergy Nuclear Operations, Inc., determined that
an equipment failure in the duct between the main generator and the main
transformer initiated the fire. The fire caused no damage to safety systems
and the risk-significance of the event was very low, and Entergy restarted
the plant on July 6, 2004, after making necessary repairs. The NRC's inspection
of the root cause of the fire is continuing.
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