The IAEA's transport regulations SSR-6 (Rev.1) have established A1 and A2 values to contain package contents within acceptable radiological consequences after an accident, aligning with radiological protection principles.

This necessitated a review to incorporate the latest ICRP dose coefficients, international standards, and calculation techniques, while addressing issues surrounding Q value limits and progeny treatment. The objective is to provide a scientifically sound analysis of the impact of 'A' value changes.

Please see the full article here:
https://consult.arpansa.gov.au/hub/a1anda2revision/