sea - oak ridge national laboratory |...
TRANSCRIPT
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Sea
Fukushima Dai-Ichi: Status before the Earthquake
Units 1, 2, and 3 operate at full power. Steam produced by water boiling in
the reactor vessel flows through the turbine generating electricity and gets
turned back into water within the condenser. The water is returned to the
reactor vessel. Warmed sea water returns to the Pacific Ocean.
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Unit 1, 2, and 3 Operating Reactors
Heat from the reactor core boils water in the reactor vessel. Steam flows
through the turbine to the condenser. Sea water cools the steam back into
water. The condensate pumps, condensate booster pumps, and feedwater
pumps return filtered and pre-warmed water to the reactor vessel.
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Unit 1-6 Spent Fuel Pools
Each unit has an individual spent fuel pool. With fuel pool gates installed,
the spent fuel pool is physically isolated from the reactor well and reactor
vessel. The spent fuel pool is cooled by water overflowing into a skimmer
surge tank. Pumps route this water through a heat exchanger to cool it and
a filter/demineralizer unit to purify it before returning it to the pool.
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