Table §
Total Body Equilibrium
Dose Equivalent Rate per
Unit Total Body Burden,
x
_
_
mRem yl ucia!
55K
26
2 x 10°
600,
6 x 10°
6575
1 x 107
90c,
3x 10°
1376,
55
2x 107
27
30
38
maximum of approximately several hundred millirem per year persisted for several
hundred da‘s.
component.
The majority of the dose rate is attributable to the 1370,
Cesium 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 body burden history
during the first three years post return.
The higher body burden resulted from
use of the two measured 6520 body burden means for adults on Utirik and the
observed dietary rate constant from Rongelap.
[It was observed on Rongelap that
-031% of © en was removed from the diet pathway each day in addition to
radioaccive decay.
Additionally, reduction in dietary radioactivity on Rongelap
had been cbserved for
137, 8; 90 Sr and 6065 to be greater than that predicted by
radioactive decay alone.
Instantaneous reduction fractions very similar to
1?