One®
:
Table 5
Total Body Equilibrium Dose Equivalent Rate
per Unit Body Burden
ax
{,
mRem y~! yoi-!
55 r¢
2x 10°
60.,
6x 102
657,
Lx 102
905,
3x 107
1376,
2x 10°
26
27
30:
38
55
.
Figure 15 illustrates the relative contribution to the composite dose
equivalent rate for each dosimetrically Significant internally deposited nuclide.
For the average Ronge}4p adult, the residence interval begins June 1,
1957; however, many adults were reported to have resettled during the next 3 to
6 months (Co80b).
The composite dose equivalent rate indicated that a broad
maximum of approximately several hundred millirem per year persisted for several
hundred days.
Most of the dose rate is attributable to the 13706 component Ce-
sium dominated over the entire post return period and would be of prime concern
for populations returning to a contaminated environment years after a fission
type initiating event.
Figure 16 illustrates two possibilities for the Utirik dose equivalent
rate resulting from the
post-return.
65 “Zn body burden history during the first three years
The higher body burden resulted from use of the two measured O70
31