Contamination levels up to 2000 dpm/100 cm do not pose a significant health
threat in this application.
Contamination levels up to 2000 dpm/100 cm do not limit disposal of the outer,
which could become contaminated by contacting the inner, as low level waste.
Originally (in DOE-STD-3013-94), the packaging concept was that the package
would be acceptable for both storage and transportation. It considered the
plutonium-bearing materials to be placed into a "boundary container" and that
packaged into a "primary containment vessel." The boundary container was
required to withstand 150% of the "worst case" internal pressure. The primary
containment vessel was expected to pass the same pressure test, all the DOT
tests (various drop tests, a crush test, etc.) and to be reusable. The current
concept of the 3013 package, which is only for storage, uses the boundary
container as the outer and has added a pressure indicating inner container. The
outer is not expected to be reused. In short, although the packaging concept has
changed dramatically, the criteria regarding removable contamination did not
change to reflect the different role that the inner container now fulfills.
In summary, then, allowing a slightly contaminated inner container does not
sacrifice any benefits, does not pose any new problems, and does allow correction of
an anachronism in the current criteria.
Container Fill Gas
1. The stored material condition should not change significantly because of reactions
with the container atmosphere. If material stabilization has to be repeated, there
would be additional handling and unnecessary worker radiation exposure.
2. The container atmosphere must not act to mask leak testing and must support leak
Mass of Contained Materials
1. The mass limit for fissile materials is based on criticality safety limits for plutonium.
Pu that is fully water-reflected and
The fissile mass of an isolated sphere of pure