Aerodynamic Entrainment and Resuspension

DOE-HDBK-3010-94

4.0 Solids; Summary

A erod yn am ic E n train m en t an d R esus pen sion

No significant release is expected for this effect. Based upon the assumption that the

airborne release during corrosion of plutonium metal is equal to the aerodynamic entrainment

(resuspension) of the corrosion product from the metal surface, bounding ARR and RF

values for this configuration are assessed for both unalloyed and delta phase metals:

10-6

Pu/cm2-hr;RF

Bounding (unalloyed metal):

ARR (dry air)

0.7

10-3

Pu/cm2-hr;RF

0.7

ARR (100% RH)

10-8

Pu/cm2-hr;RF

(delta-phase metal):

ARR (dry air)

0.7

10-4

Pu/cm2-hr;RF

ARR (100% RH)

0.7

For effects on metal surface contamination, see Chapter 5.

N on m etallic or C om p osite S olid s

T h erm al S tres s

Vitrified Waste. No significant release of radionuclides is postulated for

thermal conditions generated by industrial-type fires.

Aggregate (e.g., concrete, cement). No significant release is postulated at

ambient conditions. For large fires that can heat the aggregate to temperatures

in excess of 100 oC, material incorporated in the aggregate may be released at

rates increasing with time and temperature. Water bound with the aggregate is

lost equally in two main temperature stages; up to 200 oC (i.e., adsorbed

water) and 200 to 600 oC (i.e., chemically bound water). Portions of solid

aggregate will be broken down into a powder-like form at higher temperatures

and thus be available for suspension at the maximum value for heating of

nonreactive powders in subsection 4.4.1.1.

Bounding (Tritium, if present as H2O, to 200 oC)

ARF 5E-1/RF 1.0

Bounding (Tritium, if present as H2O, to 600 oC)

ARF 1E+0/RF 1.0

Bounding (Suspendible powder)

ARF 6E-3/RF 0.01

Spent Commercial Nuclear Fuel. Values are estimated for spent nuclear fuel

for commercial power generation, metal targets, and metal alloy and cermets

targets. Refer to the text for explanations on these materials.

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