Induced nuclear reactions: processes – systems – and elements – Reactor structures – Orifice or fluid control at inlet or outlet of coolant channels
Patent
1989-02-10
1990-10-02
Behrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
Reactor structures
Orifice or fluid control at inlet or outlet of coolant channels
376245, 376254, 376399, 376463, G21C 1720, G21C 1900
Patent
active
049605615
ABSTRACT:
Lower internals for a reactor--typically a PWR--having a pressure vessel containing a core cooled by an upward flow of coolant and a core support include a shell defining a coolant volume between the support plate and the lower part of the vessel. The shell has a wall and ducts opening into passages of the support plate. Guide tubes passing through the volume receive glove fingers for in-core instrumentation probes. The internals further include a separation plate fixed to the wall means, situated below the core support plate. The separation plate is formed with holes connected to the coolant conveying ducts and is fixed to the lower support plate of the core by mechanical connection means spaced apart at the periphery of the separation plate and defining passages for radial access of the coolant to the distribution chamber.
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Babin Michel
Gerard Chevereau
Behrend Harvey E.
Framatome
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