Table 4.
Cumulative (1979) dose equivalent summary (rem) for adults (classified as persons >16 years of age upon return to Utirik in June
1954 or to Rongelap in June 1957 and having a mean body mass >60
kg).
Nuclide
Utirik
Rongelap
Utirik
Total-body
90sr
55Fe
137¢5
60¢9
657n
Total internal
Net external*
Total
0.0118
0.0329
1.13
0.507
12.5
14.2
3.19
Thyroid
0.0267
0.000749
6.0230
1.71
0.0143
Net external*
Total
0.123
0.0422
2.57
0.0177
0.103
2.86
22.8
4.88
3.19
Lower
90g y
5 5Fe
137¢5
60¢9
652n
Total internal
Net external*
Total
large
0.225
0.0666
0.591
4.66
15.0
20.5
3.19
23.7
2.02
0.0101
11.1
0.0672
13.1
3.19
3.87
0.0537
0.0603
1.70
0.629
17.2
19.6
0.0415
2.35
0.359
0.0757
2.47
2.02
16.3
Red marrow
90sy
35Fe
13765
60¢,
652n
Total internal
0.00169
0.0594
1.55
1.85
2.02
17.4
Rongelap
4.49
Testes-ovaries
0.000749-0.000749
0.0583-0.0620
1.54-1.74
0.442-1.78
11.3-16.3
13.3-19.9
0.00169-0.0016
0.0736-0.0433
2.33-2.63
0.0125-0.0520
0.0685-0.0988
2.49-2.82
16.5-23.1
4.51-4.84
3.19
intestine wall
0.567
0.0465
0.895
0.132
0.0910
1.73
2.02
3.75
2.02
Liver
0.000671
0.00152
0.115
0.0804
1.81
0.792
16.5
19.2
2.74
0.0223
0.136
2.98
3.19
2.02
22.4
5.00
*A value of 0.73 rads in tissue of interest per roentgen measured in air act
one meter above the surface was used to convert exposure in air to dose
equivalent.
The source was assumed to be exponential distribution of 137¢5
activity with depth in soil, typical of aged fallout (B.G. Bennett, Health
Physics 19:757-67, 1970).
Because of the multidirectional nature of the
source, variation of dose with depth of organ is minimal.
are adjusted for lifestyle variations (e.g.,
ete.).
- 116 -
standing,
External doses
sitting,
fishing,