An axially multilayered low void worth liquid-metal fast breeder reactor core concept

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Nuclear Technology; (United States)

OSTI ID:5283452

Kamei, T; Yamaoka, M ^[1]

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1. Toshiba Corp., Nuclear Engineering Lab., 4-1 Ukishima-cho, Kawasaki-ku, Kawasaki-shi 210 (JP)

A new core concept with a negative sodium void reactivity coefficient has evolved. The core is composed of two core layers in the axial direction. The core layers are separated by an internal blanket, the central region of which comprises a neutron-absorbing material such as boron carbide or tantalum. Consequently, the two core layers are completely decoupled as regards neutronics, leading to an effective increase in neutron leakage from the core region when sodium is voided. This design is expected to be free from the disadvantages of a large core radius, as seen in a conventional spoiled core such as a pancake core. In this paper the design is described in detail, and its application to a 300-MW (electronic) metal fuel core and to a 450-MW (electric) minor actinide burned core is given as an example.

• OSTI ID: 5283452
• Journal Information: Nuclear Technology; (United States), Journal Name: Nuclear Technology; (United States) Vol. 97:3; ISSN NUTYB; ISSN 0029-5450
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
ALKALI METALS
BORON CARBIDES
BORON COMPOUNDS
BREEDER REACTORS
CARBIDES
CARBON COMPOUNDS
DESIGN
ELEMENTS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
LAYERS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
METALS
NEUTRON ABSORBERS
REACTIVITY WORTHS
REACTOR COMPONENTS
REACTOR CORES
REACTORS
SODIUM
TANTALUM
TRANSITION ELEMENTS
USES