Reactor core in a nuclear reactor and initial core in a nuclear

Details Reactor core in a nuclear reactor and initial core in a nuclear Reactor core in a nuclear reactor and initial core in a nuclear

1988-08-09

1990-04-03

Wasil, Daniel

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

Fuel component

376435, G21C 100

Patent

active

049146785

ABSTRACT:
The reactor core is divided into a central region and a surrounding outer region in the radial direction. First fresh fuel unirradiated assemblies newly loaded onto the outer region contain a fissible material in amounts less than that of the fissible material of second fresh unirradiated fuel assemblies newly loaded onto the central region. If the amount of the fissible material in the upper region of the first fuel assembly is denoted by a, the amount of the fissible material in the lower region of the first fuel assembly by b, the amount of the fissible material in the upper region of the second fuel assembly by c, and the amount of the fissible material in the lower region of the second fuel assembly by d, then a relationship a/b<c/d is satisfied. The reactor core provides sufficient thermal margin and improved cold shutdown margin.

REFERENCES:
patent: 3660227 (1972-05-01), Ackroyd et al.
patent: 4229258 (1980-10-01), Takeda et al.
patent: 4244784 (1981-01-01), Takeda et al.

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