FEDERAL REGISTER
Wednesday, May 28, 1960
plies when the individual whole body
dosts are known. As an opcrational
techniquc, where the individual whole
boy doses art mot known, a suitable
sample of the exposed ponulation should
be developed whose protection guide for
annual whole body dose wil! be 0.17 rem
per capita per year. It is emphasized
that this is an oprrationa) technique
which should be modified to mect spe‘
elu) situations.
(2) Considerations of population re-
_ Hetics impose a per capita dose limitation
for the gonads of 5 rems in 30 years.
‘The operational mechanism described
above for the annual individual whole
body dose of 0.5 rem is likely in the im‘gnodiate future to atsure that the gopadal exposure Guide (5 rem in 30
years) is not excecded.
(3) These Guides do not differ substantialis from certoin cther recoramendations suchas those made by the
National Committee on Radiation Protection and Measurements, the National
Academy of Sciences, and the International Commission on Radiological
Protection.
(4) The term “maximum permissible
dose" is used by the National Committee
on Radiation Protection (NCRP)
and
the International Commission on FaGiological Provection (ICRP). However,
this term is often misunderstood. The
words
“maximum”
and
“permissible”
both have unfortunate conno:ations not
intended by either the NCRP or the
ICRP.
45) There can be no Single permissibie
or acceptable level of exposure without
regard to the reason for permitting the
exposure. It should be general practice
bo reduce expitsure to radiation, and pos-
itive effort should be carried oui to fulfill the sense of these recommendations.
It is basic that exposure wo radiation
ine them at this time. However, current
protcetion ruides used by the arcncics
appecrr appropriate on an intcrim basis.
It is reconunended that:
5. The term “Radioactivity Concen-
tration Guide” be adopicd for Fudcral
use. This term ts defined os the concentration of radioactivity in the environment which is determined to result in
whole body or orran doses cqual to the
Radiation Protection Guide.
Within this definition, Radioactivity
mended are
herein
mppropriate
for
recom-
normal
peacetime operations.
(7) These Guides are not intended to
apply to radiation exposure resulting
from natural backrround or the purposeful exposure of patients by practitioners of the healing arts.
(8) It is recozni-cd that our present
- gcientific knowledse does not provide a
firm foundation within a factor of two
or three for selection of any parcicular
a]
numerical valve in preference to another
\ value, 3t should be recovnized that the
+ Radiation Protection Guides recommended in this paper are well below the
VL level where biolocical damage has been
observed fn humans.
Jt is recommended that:
4. Current protection euidecs used by
the agencies be continiicd on an interim
basis Jor organ doses © (he population.
Reconmendations ore not made concerning (he Fadiatinn Protection Guides
for individual orfnn doses to Unc popue
Intion, other than the ronads. Unfortunately, the complexities of establishing
fuides applicable to radiation exposure
ef nll body ormans preclude the Couneit
from making recommendauons concerns
JO0Tub2-
approved
for
°..
Mar 13, 1960.
{[P.R. Doc. 00-4539: Filed, May 27, 19°:
6:51 am]
6. The Federal agencics, as an interim
ommended Radiation Protection Guides.
Where no Radiation Protection Guides
gre proviced, Federal agences continue
Present practices.
No specific numerical recommenda-
tions for Radioactivity Concentration .
Guides are provided at thistime. How-
ever, concentration guides now used by
the agencies appear appropriate on an
interim basis. Where appropriate radioactivity concentration guides are not
available, end where Radiation Protection Guides for specific organs are pro-
vided herein, the latter Guides can be
used by the Federal agcncies a5 a start-
ing point for the derivatvon of radioactivity concentration guides applicable
to their particular probiems. The Federa) Radiation Council has also initiated
action directed towards the development
of
additional Guides for radiation
protection.
.
2° -S recommended that:
attainment of the desired coal of protect-
Guides
are
Guidance of Federal agencics, ane |
memorandum shall be pubished ip 1:.
FEpeRAL REGISTER.
Dwicur D, Eisexzowrr
Measure, use radioactivity concentration
guides which are consistent wilh the rec-
Protection Guides with different numerfcal values, dependins upon the circumThe
memorandum
the use of its correspondins Radiation
Protection Guide is appropriate.
Itis recommended that: ~~
Radiation Protection Guides with juds-
stances.
The recommendations numbered "*'
throurh “7" contained in the ot:
Concentration Guides can be determined
after the Madiation Protection Guides
are decided upon. Any given Radioactivity Concentration Guide is apphcabie
only for the circumstances under which
should result {rom a rea! determinction
of its necessity.
(6) There can be different Radiation
4}¢
7. The Federal agencies apply these
ment and discretion, to assure that reasonable probability is achieved in the
ing man from the undesirable eflects of
Tadiation. The Guides mav be exceeded
only after the Federal ceeneys having
jurisdiction over the matter has carefuliy
considered the reason for doing so in
light of the recommendations in this
paper.
The Radiation Protection Guides provide a gencra! framework for the radiation protection requirements.
It is
expected that each Federal anency, by
virtue of its bmmediate knowledze of its
operating problems, will use these Guides
as a basis upon which to develop detailed
standards tailored to mect Its particular
requirements. The Council] will follow
the activities of the Federal asencics in
this aren and will promote the necessary
coordination to achieve an effective
Federal program.
If the foregoing recommendations are
approved by you for the ruidance of
Frderal arenrics in the conduct of their
radiation protection activitics, it ts further recommended that this memorandum be published tn the FrEperan
Reco1stTer,
Agmitr S. PLeatmine.
Chairman,
Federul Radiation Council.
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