a.
.
eu?
.
#
=
ar
nat
aleMM be
a
‘
nat
*,
:
¢
eo
Me.
~
*
ae ae
Nt {
4
a
i,
oR
mien
ee ln eel
|
Lea)
iY,
ee
5S
§
inqr®
Ks
ee
fh
M a
W
MEMORANDU
SUBJECT:
fit
{
Nose Swi >
The attached n
to why it is, an@
ueis
vg th,
the sls
7sa
1S.
to taking of swipes follows for
-
An "action level" is a derived rever 46
err
stances and has meaning really for health otdeie
ad-safe
It is” an indicator that attentiveness is
en
- ois,
oy
e
type personnel.
reum-
laboratory dealing with radioisotopes that may become air-
T dt.
“
For example,
in a
borne, health physicists can place an air sampler, take
concentration measurements, measure air flows, characterize
particle sizes and obtain other measurements.
of time,
Over a period
they will have enough data to correlate a gross
reading from the filter paper of the air sampler with the
concentration of radioactive material in the air and the
potential for an individual to become contaminated by it.
Thus, an "action level" can be set based on the filter paper
gross reading-in counts or disintegrations per minute, not
tee
ve
ae
a quantitative basis-- which triggers or indicates to the
rad-safe personnel that a condition is developing that will
ule:
5, “we te
ay at “ne
is,
os
5
Meeps fn “
BA ae
yeh
fe ve’ "y
proper or needed for some situation.
EES
ay
Je a
.
.
.
eoae
*
-
3a
na
.
‘
.
~-~
foo.
:
-4 tuple, oh ce oe
+
“.
.
a
Mon
require additional measurements or actions.
Obviously, at Enewetak conditions are not generally consis-
tent as they would be in a lab; yet it is still of value
to have a field indicator for rad-safe purposes.
So air
samplers are used with this action level, which they have
set at about 112.6 pci/sample.
But what is really meant--
at least in my experience and understanding-- is that -**
Fo & C77TéE (7) oo?2