Spectral shift reactor

Details Spectral shift reactor Spectral shift reactor

1987-04-06

1989-05-02

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

Spectral shift

376236, 376218, 376241, 376339, G21C 700

Patent

active

048266477

ABSTRACT:
A mechanical spectral shift reactor comprises apparatus for inserting and withdrawing water displacer elements having differing neutron absorbing capabilities for selectively changing the water-moderator volume in the core thereby changing the reactivity of the core. The displacer elements may comprise substantially hollow cylindrical low neutron absorbing rods and substantially hollow cylindrical thick walled stainless rods. Since the stainless steel displacer rod have greater neutron absorbing capability, they can effect greater reactivity change per rod. However, by arranging fewer stainless steel displacer rods in a cluster, the reactivity worth of the stainless steel displacer rod cluster can be less than a low neutron absorbing displacer rod cluster.

REFERENCES:
patent: 2999059 (1958-04-01), Treshow
patent: 3036964 (1962-05-01), Horning
patent: 3088898 (1963-05-01), Busby et al.
patent: 3194743 (1965-07-01), Deddens et al.
patent: 3510398 (1970-05-01), Wood
patent: 3985514 (1976-10-01), Miller
patent: 4155808 (1979-05-01), Jabsen
Nuclear Engineering International, Aug. 1973, pp. 646-649.

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