“contaminated” organic materials (plants and animals), the Cleanup mate-
rials available for diffcrentiation (contaminated or noncontaminated)
are metal and concrete.
These matcrials will collectively be called
L<
"“debris.“
3.
The radioactivity of aebris can be removable surface con-
tamination or fixed (nonremovabiec) contamination either on the surface
1
or Gistributed throuchout, as might result from activation.
Cleanup
will assume that any alpha radioactivity is present only as removable
.
YO
contamination, beta radiation is the predominant fixed contamination of
concrete Gebris, and gamma radiation is the predominant fixed contamination of metallic debris.
“—
Ky
4.
*
Debris will be consicered as contaminated and programmed
for radiological Cleanup if it gives either:
Chen dekh
good ur of Bike aL,
:
,
Gta pope
(a)
to a filter-paper swipe over a 100cm? area, an alpha
radiation disintegration rate >20 dpm;
Bea SWARL [] be
.
_
(b)
*
——SN
\
NO
AME PE.
an absorbed dose rate >100 yrad/h when measured at a Pee
,
|
.
one om distance through not more than \seven ing/cm2 absorbing material;
or
(c)
an exposure rate >15 pR/h at a 30 cm distance.
Rye
ary
ae ekg oe
yer :