183
Acute and chronic intakes of fallout radionuclides @ S. L. SIMoNn ET AL.
Table 14. (Continued)
Utrik community
Rongelap Island community
Birth
year
RBM
Thyroid
Stomach
Colon
RBM
Thyroid
Stomach
Colon
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
33
33
33
33
33
33
33
33
34
34
34
34
34
39
42
43
43
43
46
45
43
43
42
44
Al
46
28
15
10
8.4
7.0
5.9
5.1
4.3
3.7
3.1
2.5
2.1
1.7
1.3
25
25
25
25
25
25
25
25
25
26
25
25
25
30
33
33
33
33
37
36
35
34
34
37
34
38
22
11
7.5
6.2
5.4
AT
4.1
3.6
3.1
2.7
2.3
1.9
1.5
1.2
24
24
24
24
24
24
24
24
25
25
25
25
25
28
30
30
30
30
33
33
32
32
32
33
31
34
20
11
8.0
6.7
5.8
5.1
4.5
3.9
3.5
3.0
2.5
2.1
1.7
1.4
32
32
32
32
32
32
32
32
33
33
32
32
32
38
Al
42
42
42
46
46
45
45
45
47
45
47
30
17
13
11
10
8.9
7.8
6.9
6.1
5.3
4.5
3.8
3.1
2.5
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
16
16
16
16
17
16
17
17
18
23
21
18
15
13
11
9.8
8.3
6.9
3.7
AT
3.7
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
12
12
12
12
12
12
13
13
14
16
15
13
12
10
8.9
7.8
6.7
5.6
AT
3.8
3.0
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
12
12
12
12
13
13
13
14
15
18
16
14
13
11
10
8.6
74
6.2
5.2
4.3
3.4
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
16
16
16
16
17
17
18
19
20
22
25
30
28
25
22
20
17
15
13
11
9.4
7.8
6.4
represent the doses received by the three population groups
other than Utrik in the northern atolls (Rongelap Island,
Ailinginae, Rongerik). As shown in Table 11, the thyroid doses
received by the Rongelap Island community in 1954 were
almost entirely due to acute intakes of radioiodines ('°'1, '*'I,
'T) resulting from the Bravotest. These intakes were estimated on the basis of ’°'I measurements made on samples of
pooled urine collected from adults who were at Ailinginae,
Rongelap, and Rongerik at the timeof fallout from the test. The
average thyroid dose to adults from acute intake of '°'I from
Bravo can be expressed as:
D('3'I, Bravo, adults) = C('3!I, Bravo, adults)
where
E)-Q. w
C('*'I, Bravo, adults) = the measured concentration
of '*'T in the pooled sampleof
urine; the average over the
two samples taken among the
Rongelap people is 0.42 Bq
mL|;
O = 3,500 kBq is the estimated
intake of ''I averaged over
the two urine samples (Table
7); and
D = 1,700 mGyis the estimated
thyroid dose due to the in-
take of '*'I (Table 11).
Uncertainties in C. As shown in egn (A1) (Appendix), C is obtainedas the ratio of the background adjusted
count rate of '°'l, CR (counts s _' per mL), and of the