Nuclear reactor

Details Nuclear reactor Nuclear reactor

1975-04-09

1979-03-06

Behrend, Harvey E.

176 30, 176 50, G21C 1900

Patent

active

041429354

ABSTRACT:
A nuclear reactor including two rotatable plugs and a positive top core holddown structure. The top core holddown structure is divided into two parts: a small core cover, and a large core cover. The small core cover, and the upper internals associated therewith, are attached to the small rotating plug, and the large core cover, with its associated upper internals, is attached to the large rotating plug. By so splitting the core holddown structures, under-the-plug refueling is accomplished without the necessity of enlarging the reactor pressure vessel to provide a storage space for the core holddown structure during refueling. Additionally, the small and large rotating plugs, and their associated core covers, are arranged such that the separation of the two core covers to permit rotation is accomplished without the installation of complex lifting mechanisms.

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patent: 3801448 (1974-04-01), Brandstetter et al.
patent: 3841964 (1974-10-01), Dumayne
patent: 3862001 (1975-01-01), Marmonier et al.

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