A study of high-burnup and long-operating cycle core concepts for large liquid-metal fast breeder reactors

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Nuclear Science and Engineering; (USA)

OSTI ID:6929818

Watari, Y ^[1]

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1. Hitachi Ltd., Katsuta, Ibaraki (Japan). Naka Works

The reactor physics problems in core designs for high-burnup and long-operating-cycle length are clarified. Two core concepts are proposed to deal with these problems: the advanced homogeneous core (A-HOC) in which the power distribution is flattened by dividing the core into two regions with different fuel volume fractions and the advanced axial heterogeneous core (A-AHC) in which a thin internal blanket is introduced at the core midplane in the inner core region of the A-HOC. Core performance parameters such as fissile inventory, breeding ratio, and power and flux distributions are evaluated in detail by discrete burnup analyses. The results show that the A-AHC has more uniform power and flux distributions and a more stable power shape than the A-HOC, and the A-AHC seems to be a good candidate for achieving high-burnup and long-operating-cycle length.

• OSTI ID: 6929818
• Journal Information: Nuclear Science and Engineering; (USA), Journal Name: Nuclear Science and Engineering; (USA) Vol. 103:2; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

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