Analysis of information sources in references of the Wikipedia article "Browns Ferry Nuclear Plant" in English language version.
The fire burned for seven hours, damaging scores of cables that provide the control room staff their eyes and ears to the two 1.1 million kilowatt reactors. Core cooling systems, pumps, dials and switches were knocked out by the fire. But plant workers found a way to press the auxiliary pumps into service, which kept the reactor cooled and allowed for a safe shutdown of the reactors after about 15 hours.
The residual heat removal service water intake structure is a single structure serving all three units. The reinforced concrete chimney stands 600 feet high and varies in diameter from 62 feet at the base to 6 feet at the top
All three units of the Browns Ferry plant were actually shut down in 1985, but they retained their NRC operating licences. Unit 2 came back on line in 1991, and Unit 3 in 1995 at a cost of US $1.8bn, which was also the estimated cost of restarting Unit 1.
