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- W2154262014 abstract "The Arms Control and Disarmament Agency of the U.S. Department of State instituted a study aimed at improving the light water reactor (LWR) fuel consumption efficiency as an alternative to fuel recycle in the late 1970s. Comparison of the neutron balance tables of an LWR (1982 design) and an 'advanced' Canada deuterium uranium (CANDU) reactor explained that the relatively low fuel efficiency of the LWR was not primarily a consequence of water moderator absorptions. Rather, the comparatively low LWR fuel efficiency resulted from its use of poison to hold down startup reactivity together with other neutron losses. The research showed that each neutron saved could reduce fuel consumption by about 5%. In a typical LWR some 5 neutrons (out of 100) were absorbed in control poisons over a cycle. There are even more parasitic and leakage neutron absorptions. The objective of the research was to find ways to minimize control, parasitic, and other neutron losses aimed at improved LWR fuel consumption. Further research developed the concept of 'putting neutrons in the bank' in {sup 238}U early in life and 'drawing them out of the bank' late in life by burning the {sup 239}Pu produced. Conceptual designs were explored that couldmore » both control the reactor and substantially improve fuel efficiency and minimize separative work requirements.The U.S. Department of Energy augmented its high burnup fuel program based on the research in the late 1970s. As a result of the success of this program, fuel burnup in U.S. LWRs has almost doubled in the intervening two decades.« less" @default.
- W2154262014 created "2016-06-24" @default.
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- W2154262014 date "2002-12-01" @default.
- W2154262014 modified "2023-09-25" @default.
- W2154262014 title "Summary of Research on Light Water Reactor Improvement Concepts" @default.
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- W2154262014 doi "https://doi.org/10.13182/nt02-a3344" @default.
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