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described for application of criteria to limit whole body dose for
individuals to 0.5 rem per year and to limit exposure of a siutable
sample of the population to 0.17 rem per year is likely to assure that
the gonadal exposure guide will not be exceeded.
Environmental radiation monitoring is a necessary part of
complying with the RPG guidance.
The intensity and frequency of
measurements is to be determined by the need to be able to detect
sharply rising trends and to provide prompt and reliable information
on the effectiveness of control actions.
Radioactive source control
actions and monitoring efforts are to increase as predicted exposures
move upward through a range of values and approach the numerical value
of the RPG.
A sharply rising trend approaching the RPG would suggest
strong and prompt action.
The magnitude of the actionshould be
related to the degree of likelihood that the RPG would be exceeded.
The child, infant, and unborn infant are identified as being more
sensitive to radiation than the adult.
Exposures to be compared with
. the guidance are to be derived for the most sensitive members in the
population.
The guide for the individual applies when individual
exposures are known; otherwise, the guide for a suitable sample (one-
third the guide for the individual) is to be used.
This operational
technique may be modified to meet special situations.
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The FRC primary numerical guides, expressed in Fem, ,are provided
in two reports, FRC Nos.
1 and 2, summarized in Table I.
Secondary
numerical guides developed by FRC are expressed in terms of daily intake
of specific radionuclides corresponding to the annual RPG's.
Considera-
tion is given to all radionuclides through all pathways to derive 4
are