additional discussion and clarification.
We will not discuss further details of these
Doses
listed in this paper are from the Leggett model.
models but refer the reader to the original
articles and their associated references for
Results of Dose Calculations for Rongelap Atoll
same as that for intake beginning at all other
ages. The annual dose rate in the second year
whenintake begins at birth or at 4 months drops
Cesium-137 Dose Equivalent
The dose-equivalent rate calculated for
Rongelap Island using the age-dependent model
from the first year doses of 38 mrem and 50 mrem
to about 16 mrem. This result is similar to that
described by linuma et al. (1969) for the
for estimating the }37Cs body burden is shownin
Fig. 3. The age-dependentintake of 137Cs is as
described in the "Intake of 99Sr and 137Cs"
Japanese data where the doses to infants and
children based on whole-body counting wereless
than adult doses.
The integral 30-, 50-, and 70-y dose
equivalents are also listed in Table 7 for each
age. The integral 30-y dose equivalent for
intake starting at each age range is as follows:
section of the paper for birth (424 pCi/d),
4months (556 pCi/d), 9 months (773 pCi/d),
15 y (517 pCi/d), 4 y (594 pCi/d), 12 y
(761 pCi/d), and 18 y (1085 pCi/d), with the
continuous intake in subsequent years decreasing
by radiological decay(i.e., T'/? = 30 y for !37Cs).
The maximum annual dose-equivalent rates for
intake at the beginning of each age range are
listed in Table 7.
birth, 377 mrem; 4 months, 389 mrem; 9 months,
358 mrem; 1.5 y, 361 mrem; 4 y, 382 mrem; 12 y,
They are birth, 38 mrem;
459 mrem, and 18 y, 504 mrem. The corresponding
4 months, 50 mrem; 9 months, 15 mrem; 1.5 y,
integral 50-y dose equivalents are birth,
16 mrem; 4 y, 16 mrem; 12 y, 20 mrem; adult,
567 mrem; 4 months, 579 mrem; 9 months,
22 mrem. Thus, the estimated maximum annual
dose equivalent for adults is less than for intake
beginning at birth or at 4 months but is about the
547 mrem; 1.5 y, 551 mrem; 4 y, 572 mrem; 12 y,
649 mrem, and 18 y, 693 mrem. Thus, the integral
30- and 50-y dose equivalent calculated for
Table 7. The integral 30-, 50-, and 70-y effective dose equivalent and maximum annualeffective dose-
equivalent rate for continuous intake of 137Cs beginningat variousages.
Integral dose equivalent
(mrem)
50 y
70 y
Maximum
dose-equivalent rate
(mrem/y)
Ageintake begins
30 y
Birth
4 months
9 months
377
389
358
567
579
547
686
698
667
38
50
15
382
572
692
16
Sy
—4y
12y
18 y
361
459
504
551
649
693
Suu ego
17
671
769
813
16
20
22