Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor
Reexamination Certificate
2011-03-15
2011-03-15
Palabrica, Rick (Department: 3663)
Induced nuclear reactions: processes, systems, and elements
Reactor structures
Circulating fluid within reactor
C376S399000
Reexamination Certificate
active
07907695
ABSTRACT:
A natural circulation boiling water reactor provides to a chimney with a plurality of tubes. That is to say, each of the plurality of tubes partitions the coolant flow path above a core. Thus, unlike the conventional natural circulation boiling water reactor providing the flow path partition wall grid in which the plate members are made integral by welding and coolant flow paths are partitioned, the chimney of the natural circulation boiling water reactor can reduce the number of welded portions because the edges of the four corners of each flow path do not need to be welded. The natural circulation boiling water reactor can avoid removal as a single unit, as in the case of the flow path partition wall grid in the conventional natural circulation boiling water reactor, by detaching each tube. The chimney can be easily detached from the reactor pressure vessel.
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Hirokawa Fumihito
Hosokawa Hideyuki
Ishida Kazushige
Nagase Makoto
Takahashi Shiro
Antonelli, Terry Stout & Kraus, LLP.
Boyd Erin M
Hitachi-GE Nuclear Energy, Ltd.
Palabrica Rick
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