Table 5.
External 30-year doses for each age group.*
Infants and
Case
Children and
small children
adolescents
Men
Women
1
2.7
2.7
3.1
3.1
2
3.9
4.2
4.5
4.5
3a
3.7
4.0
4.4
4.4
3b
3.5
3.9
4.4
4.2
4a
4.6
4.7
4.9
5.1
4b
4.0
4.3
4.7
4.6
5
6.0
5.8
5.6
6.1
6
6.0
5.8
5.6
6.1
Fail units are in rem.
Commission on Radiological Protection.
guide value and about 70% of the
While these guidance values for
30-year guide value.
exposures of individuals and of
little margin for additional
population groups are not a
radiation doses that may be poten-
dividing line between safety and
tially received by intake of
danger, any exposures approaching
radionuclides via groundwater and
these guides are cause for careful
various food chains.
evaluation of the situation, and
from Table 4 that residents in
exposures exceeding the guides would
houses built within the interior
require consideration of remedial
of Bikini Island will receive
measures to reduce exposures and
30-year external radiation doses
bring them within the guidelines.
exceeding the guide value.
This leaves
It is clear
As mentioned earlier, these
Inhabitants in the existing houses
on Bikini Island are expected to
external doses may be enhanced by the
receive external whole-body
presence of beta rays emanating from
radiation exposures that are
beta emitters such as 905, - 90y
approximately 40% of the annual
activities in the soil.
~21-
It appears