One correction from my earlier posting: IATA requirements apply
whenever the air carrier imposes them, in addition to international shipments.
Thus, we use IATA regs when we ship by Fedex, even if the shipment does
not leave the U.S.
Bill,
You wrote: "See
the "IATA Dangerous Goods Regulations - 2003 Edition," State Variation
USG-10." - Could you please inform the page where you found your information?
I can inform my IAEA reference:
Radioactive material
1 - Material
designated in national law or by a regulatory body as being subject to
regulatory control because of its
radioactivity;
2 - Any material containing
radionuclides where both the activity concentration and the total activity
in the consignment exceed the values specified in paras 401–406.
(ST1)
Because 2, countries who
follow the IAEA ST1 should to consider that
radioactive material requires
that the material has both an activity concentration and total activity
in the consignment which exceed the values listed in the A tables. This
means you can have a material with an activity concentration greater than
that listed, but less total activity in the consignment and are now considered
non-radioactive.
Because 1. If you have
a shipment of Tc99, which under the ST1 has an activity concentration for
exempt material of 10,000 Bq/g, you will still be regulated at 70 Bq/g
(or 100 Bq/g) if your country has such figure to define radioactive material.
Finally the reason for
2, were
developed of transport-specific scenarios which reflected
various exposure situations (exposure times, distances, source geometries,
etc.). Based on these scenarios, both activity concentration and total
activity values were calculated which would result in meeting the 10 microsievert
per year value. These transport derived values were comparable to the exemption
values in the BSS and resulted in recommended activity concentrations ranging
from 1 to 106 Bq/g.
Now as merely curiosity why the 70 Bq/g was selected?Jose Julio Rozentaljoseroze@netvision.net.il-----
Original Message -----
Sent: Monday, June 23, 2003 2:25 PM
Subject: Re: Iternat.transport regs
- WHAT's 'low toxicity'?
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.
It's not about dose, it's about trust.
Curies forever.
Bill Lipton
liptonw@dteenergy.com
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
----- Original Message -----
Sent: Sunday, June 22, 2003 6:27 AM
Subject: Re: Iternat.transport regs
- WHAT's 'low toxicity'?
"Low toxicity"
appears to mean very low specific activity.
Ruth
Ruth Weiner,
Ph. D.
ruthweiner@aol.com