material excluded from the hazardous material inventory, as discussed in
Section 7.2.2 of this document. Facility segmentation (as discussed in
DOE-STD-1027-92) or other means of demonstrating the lack of facility-
wide release potential may be used, as appropriate, to reduce the
inventory for direct comparison with guidelines. In all cases, however,
such reductions should be justified in terms of the unavailability of
common-cause release mechanisms stemming from aircraft impact.
Radioactive Material Offsite Exposure Determination. The exposure to
the maximally exposed individual at or beyond the site boundary will be
estimated in terms consistent with the screening guidelines presented in
Source term values will be based upon a bounding release consistent
with the following assumptions:
a. All material in close proximity to high explosives present at the facility
will be assumed to be subjected to the energetics associated with
high explosive detonation.
b. No credit will be taken for mitigation, either passive or active,
including ventilation, fire suppression, building confinement, and
c. The fraction of radioactive material assumed to be driven airborne
and respirable will be based on Table II, which is derived from DOE-
HDBK-3010-94 and explained in Reference 8.