Boiling water reactor core, boiling water reactor, and method of

Induced nuclear reactions: processes – systems – and elements – Reactor structures – Orifice or fluid control at inlet or outlet of coolant channels

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376377, 376444, G21C 104

Patent

active

061413976

ABSTRACT:
In each of a number of fuel assemblies loaded in a core of a boiling water reactor, a fuel holding portion of a lower tie plate holds lower end portions a plurality of fuel rods and at least one water rod. The water rod includes a rising pipe opened to a space in the lower tie plate below the fuel holding portion and introducing upward a coolant introduced to the rising pipe, and a falling pipe communicated with the rising pipe and introducing downward the coolant introduced through the rising pipe. The falling pipe has a coolant outlet opened to a second coolant passage defined between the fuel rods above the fuel holding portion. The rising passage is filled with the coolant during a period of rated power operation of the reactor, and a surface of the coolant is formed in the rising pipe during a period of non-rated power operation in which a flow rate of the coolant supplied to the fuel assemblies is lower than that during the period of rated power operation. As a result, influences of a transient event during the rated power operation can be suppressed, and the nuclear thermal-hydraulic stability of the core during the non-rated power operation can be improved.

REFERENCES:
patent: 3528885 (1970-09-01), Kumpf
patent: 4708846 (1987-11-01), Patterson et al.
patent: 4803044 (1989-02-01), Patterson
patent: 5023047 (1991-06-01), Nishida et al.
patent: 5251246 (1993-10-01), Matzner
patent: 5528641 (1996-06-01), Takeuchi et al.
patent: 5617456 (1997-04-01), Kurosaki et al.
patent: 5640435 (1997-06-01), Kurosaki et al.
Moriya et al., "Development of Future BWRs for 21 Century", The Hitachi Hyoron, vol. 74, No. 10 (1992), pp. 55-60.

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