

DOESTD301496
TABLE II. Fraction of radioactive material released and respirable.
Material Form
Fraction Released
and Respirable
Gases/Vapors
1.0
Liquids:
Aqueous
2E3
Combustible Organic
1E2
Subject to Explosive Stress
TNT Equivalent
Mass*
Solids:
Pyrophoric Metals
3E4
Uranium
1E3
Subject to Explosive Stress
TNT Equivalent
Mass*,**
Powders
2E3
Surface Contamination
Combustible Solids
1E2
Noncombustible Solids
1E3
Other
1E3
HEPA Filters
1E2
*
The amount of material released and respirable will be equivalent to the TNT
equivalent mass of the explosive, except where the TNT equivalent mass
exceeds the total mass of the material at risk, in which case the amount of
material released and respirable will be the total mass of the material at risk.
**
High explosive detonations involving nuclear weapons and associated
assemblies will use a value for the fraction of material released and respirable
equal to 2E1. Additional discussion of airborne release resulting from such
detonations can be found in DOEHDBK301094, Section 4.1 (Reference 5).
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