Abstract
A scheme for circulating coolant and cooling the core that has advantages over the designs of similar nuclear power systems is proposed for light-water reactors with supercritical coolant parameters and a fast-resonance neutron spectrum.
A negative void coefficient of reactivity is obtained for the entire run of a fuel assembly without building a blanket. A more uniform distribution of the energy release over the core volume is achieved without using complicated fuel-enrichment schemes. The nonuniformity of the coolant temperature distribution at the core exit is decreased. The fuel assemblies operate with a much lower temperature drop over the core height. The core has a small reactivity excess on burnup and a BR of about 1, for which the most difficult operating regimes (flooding with cold water) can be handled with standard means (placement of absorbing organs of the safety and control system in ∼2/3 of the fuel assemblies).
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Translated from Atomnaya Énergiya, Vol. 100, No. 5, pp. 349–356, May, 2006.
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Glebov, A.P., Klushin, A.V. Reactor with a fast-resonance neutron spectrum, cooled by supercritical-pressure water with a bidirectional coolant flow scheme. At Energy 100, 325–331 (2006). https://doi.org/10.1007/s10512-006-0089-1
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DOI: https://doi.org/10.1007/s10512-006-0089-1