"contaminated" organic materiais
(plants and animals), the Cleanup mate-
are metal and conerete.
3.
Ou
ct
rials available for Gifficrentication: (contaminated
or noncontaminatcd)
These matcrials will collectively be callcd
The radioactivity of cebris can be removable surface con-
tamination or fixed
(nonremovabic)
or Gistributed throuchout,
contamination either on the surface
as mignt resvit from ectivation.
Cleanun
na vcacloactivity is present oniy as removable
@
contamination, beta radiation is the predominant fixed contamination of
L
concrete Gebris,
.
anc gamma
radiaéticn is the 2predominant fixcd contaminaoa
tion of metallic debris.
&.
oo
-
Debris will be consiécred as contaminated and programmed
or Yacdiclogical Cleanuyn if it gives either:
(a)
amo
*
»
+
to a filter-paper swipe over a 100cm* area, an alpna
radiation disintegration rate >20 dpn;
">
(b)
an absorbed cose rate »100 urad/h when measured at a
one cm distance through not more than seven mg/cm absorbing material;
or
(c)
an exposure rete >15 uR/h at a 30 cm distance.
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