General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB 15146.5-1994
Scope
This standard specifies the nuclear criticality control guidelines for operating, processing, and handling plutonium-natural uranium mixtures and certain subcritical limits for isolated units of plutonium-natural uranium mixtures with simple geometric shapes. This standard applies to operations outside the reactor, processing and disposal of plutonium - natural uranium mixture. This standard does not apply to the assembly of these materials under controlled conditions (e.g. critical experiments).
GB 15146.5-1994 history
1994GB 15146.5-1994 Nuclear criticality safety for fissile materials outside reactors-Nuclear criticality control criteria and subcritical limits for plutonium-natural uranium mixtures