# The Radioactive Material (Road Transport) (Great Britain) Regulations 1996, Paragraph 4: Type A packages


(a) A Type A package containing a single radionuclide shall not contain activities greater than the following:
(i) for special form radioactive material: A1; or
(ii) for all other radioactive material: A2.
(b) For a Type A package containing a mixture of radionuclides whose identities and respetive activities are known the following formulae shall apply:
(i) To calculate package limit for special form radioactive material:
∑iB(i)A1(i)shall be less than or equal to1
(ii) To calculate package limit for other forms of radioactive material:
∑iB(i)A2(i)shall be less than or equal to1 where
B(i) is the activity of radionuclide i and A1(i) and A2(i) are the A1 and A2 values for radionuclide i, respectively.

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Source: https://www.legislation.gov.uk/uksi/1996/1350/schedule/16/paragraph/4 (the official version)
Page: https://openlegislation.uk/radioactive-material-road-transport-great-britain-regulations-1996/schedule-16/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.