promising than any method previously tried.
It is hoped that after five years
of experimentation this method may at last provide at least a working procedure
for the evaluation of enriched uranium exposures,
The increasing use of a
variety of uranium isotopes makes it absolutely necessary that some counting
procedure for uranium analysis be available.
An extensive air sampling and urinalysis program was initiated in T Shop.
Urinalyses are now being run on all operators in T Shop on Friday evening and
Monday morning samples and, in addition, five operators have been submitting
daily urine samples.
Two of these men are being followed very closely with
breathing zone air samples in an effort to correlate urine analysis and air
analysis data.
A large percentage of ‘the breathing zone air samples have run.
well over permissible levels.
These men are being followed very closely because
of the restricted ventilation and the high work level in this shop at present.
Final plans have been approved for the improvement of ventjlation
conditions in T Shop.
C.
Plutoniup
andspe Oo)
Classification changed to
by CEL
v.‘Ss. E.R
Per
{Percon
yeGeom
Cpa?
mS
At the request of Group Eph, we havé, been co-operating in study eg?
(Signature of person making ths change, and date}
respirator program at DP West and in investigating the cause of a number of
excessively high room air counts.
A tentative report on the respirator program.
; ventilation changes, control of nickel carbonyl, hydrogen fluoride, and improve
ments in the air sampling program has been prepared and discussed with H-l and
‘CMR~11.
This has involved a rather thorough study of conditions in several
operating rooms in DP West.
A very highly contaminated urine sample was received and analyzed and,
pip
/ DOE
COPIED
=
LANL RG
as @ result, about 40 urinalyses had to be discarded.
These samples were con
taminated, or at least results rendered suspect, because of the presence of t
very highly contaminated sample.
All counters had to be cleaned and glasswa1
used in the analysis were discarded and replaced.
ae
|
This was the most highly
2s