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For U.S. shipments, a package is considered radioactive if it exceeds EITHER
limit. See the "IATA Dangerous Goods Regulations - 2003 Edition,"
State Variation USG-10.
The opinions expressed re strictly mine.
Bill Lipton
Jose Julio Rozental wrote: The previous exemption limit of 70Bq/g exempted very little and with many carriers, including the Post Office, not accepting anything that was 'radioactive', and with others making high charges and additional paperwork for dealing with excepted packages. The new exemption limits taken from the BSS are based upon the toxicity of the isotope and are therefore much more realistic for the low toxicity isotopes used in university research. For example the exemption limits for C-14 are 10kBq/g (concentration limit) and 10MBq overall limit. It is only when both these limits are exceeded that a package will be considered radioactive and come within the scope of the regulations |