1993•Unpublished venueOpen access

Flux stability and power control in the Soviet RBMK-1000 reactors

Pacific Northwest Lab., Richland, WA (United States), G Meriwether, USDOE, Washington, DC (United States), J McNeece

Abstract

As a result of the Chernobyl accident, the Soviets have studied and implemented various design changes to improve the safety of the RBMK reactors. The safety measurements include modifications of the control rod configuration, fuel enrichment increase from 2.0 to 2.4 weight percent U-235, and installation of additional supplemental absorbers. The purpose of this study is to investigate the effects of increased fuel enrichment, different control rod positions, and supplemental absorber loadings on reactivity control, power distribution within the large RBMK core, and relative stability against power oscillations.

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Key concepts: RBMK, Control rod, Nuclear engineering, Flux (metallurgy), Stability (learning theory), Environmental science, Power (physics), Core (optical fiber)