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In September 2000, The General Conference of the IAEA requested the Secretariat to develop radiological criteria for long-lived radionuclides in commodities, particularly foodstuffs and wood. This Safety Guide partially fulfils the request, providing guidance on all commodities other than foodstuffs and drinking water (foodstuffs are to be reviewed). The Guide provides specific values of activity concentration for both radionuclides of natural origin and those of artificial origin that may be used for bulk amounts of material for the purpose of applying exclusion or exemption. It also elaborates on the possible application of these values to clearance. |