Spectral shift nuclear reactor with improved efficiency

Details Spectral shift nuclear reactor with improved efficiency Spectral shift nuclear reactor with improved efficiency

1986-12-30

1995-01-31

Harvey, Behrend E.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

Spectral shift

376173, 376171, 376181, 376901, 376339, C21C 724, C21C 322

Patent

active

053864395

ABSTRACT:
During operation of a light water moderated and cooled nuclear reactor, rods varying the neutron energy spectrum are introduced into the core of the reactor in the course of a first phase of the cycle in order to reduce the ratio of the volume of moderator to the volume of fissile material in the core. In a second phase of the cycle the spectrum displacement rods are extracted. The rods are of a mixture of thorium energy neutrons. The rods may be of fertile material and--depleted uranium. The invention is of particular interest in PWRs.

REFERENCES:
patent: 2900263 (1959-08-01), Handwerk et al.
patent: 3147191 (1964-09-01), Crowther
patent: 3263004 (1966-07-01), Bean
patent: 3267001 (1966-08-01), Greebler
patent: 4086132 (1978-04-01), Meuschke et al.
patent: 4261935 (1981-04-01), Gutierrez et al.
patent: 4481164 (1984-11-01), Bollinger
patent: 4493809 (1985-01-01), Simnad
patent: 4683102 (1987-07-01), Martin et al.
ANS Trans. vol. 27, Nov. 27 -Dec. 2, 1977, pp. 959-970.

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