Reactivity control in nuclear reactors

Details Reactivity control in nuclear reactors Reactivity control in nuclear reactors

1988-02-29

1990-07-24

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By altering quantity of characteristic of fuel within...

376244, 376303, 376352, 376445, 376448, G21C 700, G21C 900

Patent

active

049434098

ABSTRACT:
To provide intrinsic reactor safety, the fuel sub-assemblies of a nuclear reactor core are provided with reactivity control mechanisms operable, in response to temperature rises above desired limits, to interact with adjacent fuel sub-assemblies and effect radial dilation of the core in order to reduce reactivity. Various embodiments are disclosed in which differential thermal expansion of an operating device or devices (34; 40; 42, 44, 46; 50) is translated into radially outward displacement of a lever or levers (28) for contact with neighbouring sub-assemblies.

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