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ANSI/ANS-8.12-1987 (R2021)
Nuclear Criticality Control and Safety of Plutonium-Uranium Fuel Mixtures Outside Reactors
This standard is applicable to operations with plutonium-uranium oxide fuel mixtures outside nuclear reactors, except the assembly of these materials under controlled conditions, such as in critical experiments. Basic criteria are presented for plutonium-uranium fuel mixtures in single units of simple shape containing no more than 30 wt% plutonium combined with uranium containing no more than 0.71 wt% 235U.
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American National Standards Institute [ansi]