Table 5.
External 30-year doses for each age group.
Infants and
Case
small children
1
2.7
2
Children and
Men
Women
2./
3.1
3.1
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
a
All
.
units
are
.
in
adolescents
rem.
Commission on Radiological Protection.
puide value and about 70% of the
While these guidance values
30-year guide value.
for
This leaves
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,
radionuclides via groundwater and
any exposures approaching
these guides are cause for careful
various food chains.
evaluation of
from Table 4 that residents in
the situation,
and
It is clear
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.
As mentioned earlier,
Inhabitants in the existing houses
thé€se
on Bikini Island are expected to
external doses may be enhanced by the
receive external whole-body
presence of beta rays emanating from
90
90,
radiation exposures that are
beta emitters
approximately 40% of the annual
activities in the soil.
F
sa
-?)\-
such
as
Sr -
It appears