an

accident wherein

particles,

surfaces

are

contaminated with hot

it is necessary to have a standard to arnly *o

decontamination measures.

The number of particles that can be resuspended from
surfaces has been the subject of a number of experiments.

These experiments have usually resulted in the determination
of a resuspension factor
RF

R.

(m72)
m

L.

values. 23

=

(RF).

The RF is defined by:

concentration in air (uCi/m?)
;
=
=
Concentration on surface (uCi/m¢)

Kathren has reviewed the data cbtained on RF
He indicates

and its compounds

that,

"reported

[RF]

values

for plutonium

range over 11 orders of magnitude."

This

11 orders corresponds to values between 1071 to 107ll ml.
Kathren indicates

that,

"an RF of 1074 ml,

conservative is appropriate." %4

although

Langham indicates that a

member of the Danish scientific team used an RF=1073 m1
during the Thule deliberation. ®>

83/

Kathren, R.L.,

We would recommend

that

"Towards interim acceptable surface con-

tamination levels for environmental Pu02," BNWL-SA-1510, Battelle
Northwest Laboratory, Richland, Washington, April 1968, pp. 3-4.

84/

Ibid, p. 4.

85/ Langham, Wright H., Op. cit., p. 5.
The Thule Deliberations refer to the deliberations following the accidental
crash of a B-52 bomber carrying nuclear weapons near Thule

Air Force Base in Greenland.
The high explosives in the
weapons detonated and dispersed the plutonium.

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