Basic radionuclide values

The following basic values for individual radionuclides are given in Table 1  

For individual radionuclides which are not listed in Table 1 the determination of the basic radionuclide values referred to in para. 401 shall require multilateral approval. It is permissible to use an A2 value calculated using a dose coefficient for the appropriate lung absorption type, as recommended by the International Commission on Radiological Protection, if the chemical forms of each radionuclide under both normal and accident conditions of transport are taken into consideration. Alternatively, the radionuclide values in Table 2 may be used without obtaining competent authority approval. 

Radionuclide (atomic number) A, (TBq) 2 (TBq) Activity concentration for exempt material (Bq/g) Activity limit for an exempt consignment (Bq) 

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For mixtures of radionuclides where the identity is known but the relative proportions are not known in detail, a simplified method to determine the basic radionuclide values is given. This is particularly useful in the case of mixed fission products, which wiU almost invariably contain a proportion of transuranic nuclides. 

For mixtures of radionuclides, the determination of the basic radionuclide values referred to in para. 401 may be determined as follows... 

TABLE 2. BASIC RADIONUCLIDE VALUES FOR UNKNOWN RADIONUCLIDES OR MIXTURES... 

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