wo
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mW eS i te
wetce
a gt al i,
Se pn
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oe
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: radiation.
exposure,‘under. emergency. conditions’‘were given particular
S<
tlon,.< It was.tentatively;a
greed ‘that. a-thirdUnited States-United
x Seonference::be ‘heldin’thesUnited:States:“during|1952;-:t0 consider:‘évi
£2to date: which:‘bears:on:maximm:permissiblesconcentrations:ofradioac ive
materials in air and water.«Previous conferences of this nature werp
held at Chalk River, Canada, and at Harwell, England, ‘and have a strpng.
ae
nel participating in BUSTER-JANGLE tests.
A policywas formulated
A permissible exposure off
roentgens of gamma radiation has been authorized, without regard to
3.9
—
seme
Permissible radiation dose levels.
eee ee
Dee ene
ae
eee,
. re
ts
bearing on AEC operating levels.
rate at which the dose is accumulated, provided this.exposure repre
the total integrated dose over any period of 13 consecutive weeks (
quarter) which includes the test period. A similar exposure policy
been suggested for maintenance personnel who would be called upon o
sionally to service marine reactors. These authorizations retain
international permissible level of 0.3 roentgens per week, average
a long enough period to permit efficient operation, yet limiting s
time exposures to doses which are not hazardous. They are not, ho
considered to be applicable on a regularly recurring basis, as for
to plant personnel who are exposed daily.
CG
Shipping of Radioactive. Materials is expected.
Civil Defense Lisison Branch
Test activities. The Chief, Civil Defense Liaison Branch, participated in the recent series of tests of the Nevada Test Site as Project
Officer, Program 9.1b (AEC personnel shelter) and as monitor of Hrogram
Q.la (FCDA backyard-type shelters), tested during Operation BUSTHR.
Other
representatives of the Branch were present also during the operatfion.
The, AEC Disaster Planning Coordinator, as well as representatived of the
FCDA (as described in previous report), also were present to obs@rve the
operation under the sponsorship of the radiological safety group
Representatives of the Branch conferred with the Effects Jest
Group on detaiis of Operation JANGLE and studied the. structures ffo be
tested.
Particular notice was paid to underground tunnels, preffktricated
- 23 -
“hare
Maximum permissible levels in shipping radioactive materiald.
problem receiving current attention is that of maximum permissible levels
of surface contamination in shipping, in laboratory operations andfin rehabilitation of contaminated property. As a partial basis for d#termining permissible shipping contaminations, a questionnaire has begn circulated through administrative channels to AEC contractors who hanfile
radioactive materials, asking for information on their present prattices
and standards, and for a statement of the lowest levels which theyfcan
meet at reasonable cost.
It is hoped that realistic recommendatidms can
be formulated, with general AEC concurrence, for changes in the prrsently
undefined regulations governing shipping of radioactive materials]
Official representation on the National Research Council's Subcommittde on