Aerodynamic Entrainment and Resuspension

DOE-HDBK-3010-94

3.0 Liquids; Summary

Free-fall spills of aqueous solutions, slurries and viscous solutions, fall

distances >3 m. The empirical correlations for ARF and drop size

distribution parameter presented by Ballinger et al. (January 1988) are assessed

to be adequate provided ARF x RF value exceeds bounding 3-m values.

Aerodynamic Entrainment and Resuspension

There appear to be very large differences in suspension rates under experimental test

conditions as well as an order of magnitude uncertainty in measurements for individual

conditions. On this basis, conservative values are applied.

Indoors, on heterogeneous surface (stainless steel, concrete), low airspeeds up

to normal facility ventilation flow; Outdoors, pool for low windspeeds.

Bounding

ARR 4E-7/hr; RF 1.0

Indoors, on heterogeneous surfaces, covered with debris or under static

conditions.

Bounding

ARR 4E-8/hr; RF 1.0

Outdoors, from large pools/ponds, higher windspeeds to 30 mph.

Bounding

ARR 4E-6/hr; RF 1.0

Outdoors, absorbed on soil, no lengthy pooling, windspeeds to 50 mph.

Bounding

ARR 9E-5/hr; RF 1.0

Use of the above values for short time frames (<100 hours) would not introduce serious

error due to the severe depletion of the source. For time periods exceeding 100 hours, the

reduction of the source can be accounted for from the entrainment of material. In general,

these values are intended for immediate post-accident conditions and freshly deposited

material. They would overestimate cumulative releases from long-term contamination of

surfaces (i.e., months to years) and are not appropriate for such use.

O rgan ic C om b u stib le L iq u id s

This section specifically addresses potential releases of radioactive contaminant due to thermal

stress for organic solutions or organic and aqueous solutions present together.

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