Doses from external irradiation @ A. BouviLLe Er AL.
153
Table 5. Population-weighted average external dose to adults of four groups of atolls and/or communities. Grouping is
based on similar levels of deposition of total '’Cs (see Fig. 2 of Simon 2010a). Range in parentheses represents the
minimum and maximum total external dose within the group of atolls or communities. All values rounded to two
significant digits.
Total external dose
Atoll or population
group
through 1970 from
all tests (mGy)
Atolls
Southern latitude
Ailinglaplap, Arno, Aur, Ebon, Jaluit,
Mid-latitude
Maloelap, Mili, Namorik, Namu, Ujae
Ailuk, Kwajalein, Likiep, Mejit Island,
8.8
Kili Island’, Lae, Lib Island, Majuro®,
All
5.3-22
34
Ujelang®, Wotho, Wotje
Utrik and atoll of relocation®
Rongelap, Ailinginae, Rongerik, and
atolls of relocation®
Utrik community
Rongelap Island/Ailinginae/
Rongerik evacuees
Rangeof total external
doses among atolls
(mGy)
22-59
130
1,000
—
470—1,600
27
5.4-1,600
All
“Primary residence location of Bikini community during test years.
> Includes Majuro permanent residents and Rongelap control group.
© Primary residence location of Enewetak community during testing years.
‘See Table 3 of Simonet al. (2010a) for atolls of relocation.
Table 6. Whole-body absorbed doses (mGy) from externalirradiation cumulated from 1948 through 1970 for representative persons by birth year (1930 to 1958) (rounded to two significant
digits). Doses for Utrik and Rongelap Island communities account
“Zr
—— 131)
100
for relocations.
Whole-body dose from external irradiation (mGy)
oO
Birth
year
Majuro
residents
<1931
9.8
22
130
1,600
1,600
i
1932
1933
1934
9.8
9.8
9.8
22
22
22
130
130
130
1,600
1,600
1,600
g
Fe
°
1935
1936
9.8
9.8
23
23
130
130
1,600
1,600
>
5
1938
1939
1940
9.8
10
10
23
23
23
130
130
150
1,600
1,600
1,600
o
1931
1937
1941
1942
1943
9.8
9.8
12
12
12
ids
1946
12
Kwajalein
residents
22
23
26
26
26
266
Utrik
community
130
130
150
150
150
130
150
Rongelap Island
community
1,600
©
©
=>
3
4
2
1,900
1,900
1,900
1900
1.900
10
ot
0.01
10°
10'
107
10°
Hours
10°
10°
10°
1947
2
27
150
1.900
Fig. 6. Relative contribution (%) of selected radionuclides to the
total exposure rate on the groundas a function of time (h) after the
1948
12
23
150
1,900
detonation.
1951
12
21
150
1,900
calculated as deposition estimates for that radionuclide
2,100
are not available for each test separately. More impor-
1949
1950
1952
1953
12
12
13
2
1954
4.2
1956
0.47
1955
1957
1958
20
21
22
44
8.8
0.78
2.1
0.14
0.41
0.09
150
150
1,900
1,900
160
2,100
45
470
160
3.1
13
2.7
0.23
1.4
2.3
13
13
12
9.2
slight overestimates since the derived proportions are
relative to only the 63 radionuclides considered.
External dose from 7*?**“°Pu, the last radionuclide
listed in Table 4 of Simonet al. (2010a), has not been
.
.
tantly, the corresponding external doses would have
been
cen
trivial
trivial.
As a basis for evaluating the magnitude of the
estimated external doses, the annual and total doses
reported for adults in Tables 4 to 6 and in Fig. 5 can be
compared with the external doses that Marshallese adults
typically received from natural background radiation or
with typical doses received by Americans wholived near
the NTS. The average annual external dose received by
Marshallese from natural sources is about 0.24 mGy,