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the A1 or A2 value to be applied, shall be those corresponding to the parent radionuclide of that chain. In the case of radioactive decay chains in which any daughter radionuclide has a half-life either longer than 10 days, or greater than that of the parent radionuclide, the parent and those daughter radionuclides shall be considered as mixtures of different radionuclides.

E.For mixtures of radionuclides whose identities and respective activities are known, the following conditions apply.

1.For special form radioactive material, the maximum quantity that may be transported in a Type A package is as follows.

where:

B(i) = the activity of radionuclide I

A1(i) = the A1 value for radionuclide I

2.For normal form radioactive material, the maximum quantity that may be transported in a Type A package is as follows.

where:

B(i) = the activity of radionuclide i

A2(i) = the A2 value for radionuclide i

3.Alternatively, the A1 value for mixtures of special form material may be determined as follows.

where:

f(i) = the fraction of activity for radionuclide I in the mixture

A1(i) = the appropriate A1 value for radionuclide I

4.Alternatively, the A2 value for mixtures of normal form material may be determined as follows.

where:

f(i) = the fraction of activity for radionuclide I in the mixture

A2(i) = the appropriate A2 value for radionuclide I

5.The exempt activity concentration for mixtures of nuclides may be determined as follows.

where:

f(i) = the fraction of activity concentration of radionuclide I in the mixture

[A] = the activity concentration for exempt material containing radionuclide I

Louisiana Register   Vol. 34, No. 10   October 20, 2008

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