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DOE-STD-3014-96
Thresh
=
DOE-STD-1027-92 Category 2 threshold (g or
Ci)3;
=
a unique designator for each isotope found in
the facility.
If X exceeds unity, the threshold has been exceeded.
Hazardous Chemicals. This section summarizes the screening approach for
7.2.4
hazardous materials. More detailed information is provided in Reference 3.
Hazardous Chemical Material Source Term. The source term value will
7.2.4.1
be based on a bounding release consistent with the following
assumptions:
a. No credit will be taken for mitigation, either passive or active, including
ventilation, fire suppression, building confinement, and rubble effects.
b. All materials will be released to the environment as a result of the
impact.
c. The state and form of the release will be determined as follows:
1. For gases liquefied under pressure (e.g., chlorine, ammonia,
propane), the entire contents of the vessel will be assumed to
become airborne as a puff. The same will apply to wholly gaseous
releases.
2. For liquids with a boiling point above ambient and storage
temperatures at ambient, the material will be assumed to spill
3
Exposure determination will not use the criticality lists for 233U, 235U, and 239Pu, since these values are unrelated
to onsite receptor dose.
85


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