otherwise, the zuide for a suitable sanple (one-third the guide for the
individual) is te se usel.
This operational tecimique may be modifieu
to meet special situations.
The FRC primary numerical guides, expressed in rem, are provided in tvo
reports, PAC Nos. Loanc 2, sitaarized in Table I.
Seconlary numerical
guides developed by FRC are expressed in terms of daily intake of specific
radionsclides sorte cspoadin; to the annual W's,
Consiieration is given
to all radionuclides througi: all patinays to derive a total annual exposure
for comparison ith FRC suides.
Tlowever, for many practical situations a
relatively few radionuclides yield the major contribution to total
exposure; by comparison, exposures from others are very small.
TABLE
I
FRC RADIATION PROTECTION GuipEsl/
Individual
Whole body
Gonads
0.5 rem/yr
-
Thyroid 2/
Bone marrow
Bone
1.5 rems/yr
0.5 rem/yr
1.5 rems/yr
Bone (alternate 2!
0. 003 pg of
guide)
2262, in adult
Population Group
~
0.17 rem/yr
5 rems/30 yrs
0.5 rem/yr
0.17 rem/yr
0.5 rem/yr
0.001 ¥g of **°Ra
in adult skeleton
skeleton
1/
2/
For conditions and qualifications see FRC Report Nos. 1 and 2.
Based upon childs thyroid, 2 gms in weight and other factors
listed in paragraphs 2.10-2.14 of FRC Report No. 2.
3/
Or the biological equivalents of these amounts of 2260p...
141-03