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
90s,
0.0118
25Fe
137¢,
0.0329
1.13
60¢o
0.507
652n
Total internal
Net external*
Total
12.5
14.2
0.0267
0.0230
1.71
0.0143
0.0757
1.85
3.19
2.02
17.4
3.87
Thyroid
0.000749
0.0537
0.0603
1.70
50¢o
0.629
652n
Total internal
Net external*
Total
17.2
19.6
3.19
22.8
0.225
5 Fe
0.0666
137os
60¢,
652n
Total internal
Net external*
Total
0.591
4.66
15.0
20.5
3.19
23.7
0.0415
2.35
0.359
0.0101
11.1
0.0672
13.1
2.47
3.19
2.02
16.3
4.49
Testes-ovaries
0.123
0.0422
2.57
0.000749-0.000749
0.0583-0.0620
1.54-1.74
0.00169-0:0016
0.0736-0.0433
2.33-2.63
0.103
11.3-16.3
0.0685-0.0988
0.0177
2.86
2.02
4.88
0.442-1.78
13.3-19.9
0.567
0.0465
0.895
0.132
0.0910
1.73
2.02
3.75
0.0125-0.0520
2.49-2.82
3.19
2.02
16.5-23.1
Lower large intestine wall
90s,
0.00169
0.0594
1.55
Red marrow
90sy
55Pe
13765
Rongelap
4.51-4.84
Liver
0.000671
0.115
0.00152
0.0804
1.81
0.792
16.5
2.74
0.0223
0.136
22.4
5.00
19.2
3.19
2.98
2.02
*A value of 0.73 rads in tissue of interest per roentgen measured in air at
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 miltidirectional nature of the
source, variation of dose with depth of organ is minimal. External doses
are adjusted for lifestyle variations (e.g., standing, sitting, fishing,
etc.).
oe
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