Table 3-7. Statistical Sum m ary of Drop Size Param eters for Lognorm al Distributions

DOE-HDBK-3010-94

3.0 Liquids; Aqueous Solutions

This correlation covers all of the spill data, including slurries and viscous solutions. This

results in it being potentially nonconservative for low-density aqueous solutions modelled on

the uranine data. In order to determine a bounding ARF for this subset of solutions, the

ARF value calculated from the model are multiplied by a factor of 3 (empirical observation).

This factor does not apply to the other types of solutions.

No regression analysis produced a satisfactory correlation with AMMD and a simple

statistical correlation representation of lognormal drop size parameters is substituted. They

are presented in Table 3-7.

Table 3-7. Statistical Sum m ary of Drop Size Param eters for Lognorm al Distributions

(Table 3.4 - Ballinger, et al., January 1988)

AM M D, m

GSDa

All data

21.5

7.3

0.4

UNH spill

27.2

6.0

0.3

Uranine Spill

27.1

3.0

0.2

Sucrose spill

12.5

12.3

0.5

Slurry spill

15.8

10.1

0.4

GSD = Geometric Standard Deviation.

The values listed in Table 3-7 should be applied to the appropriate liquids assumed involved

in the event. For example, if the liquid can not be specified, the values assumed for all data

would apply. The UNH represents heavy metal, aqueous solutions with densities 1.2 g/cm3

or greater. For other aqueous solutions, the uranine values apply. The sucrose values are

applicable to liquid with viscosities greater than 50 centipoise (the ARF decreases with

viscosity but the AMAD appears to remain relatively constant for the limited data set

available). Slurry values are applied to aqueous slurries.

3.2.3.2

S lu rries

Experiments have been performed to measure the ARF and RF from the free-fall spill of

slurries (Ballinger and Hodgson, December 1986). The apparatus (see Figure A.7,

Appendix A) and procedures were as used in the free-fall spill experiments involving aqueous

solutions. The pertinent data extracted from the reference document (Ballinger and Hodgson,

December 1986) are shown in Table 3-8 (original data tables reproduced as Tables A.14 and

A.15 in Appendix A). The bounding ARF and RF values are 5E-5 and 0.8 with median and

average values of 2E-5 and 0.7 and 2E-5 and 0.8, respectively. The empirical model for

calculation of ARFs and drop size characteristics was discussed in subsection 3.2.3.1.

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