or sickness and-ather tectore,,Regardless ofthe couse of individu},94 ffer~
“ths
ences from the mean, a smooth,degcription, of the body burden end activity ingestion rate for the population could be adopted.
+
4
,
On this basis a declining contin:
+
ae
uous uptake model wae used.
Internal Dose Equivalent Rates
ce
bee
The approximate instantaneous dose equivalent rates for the total body
were determined from the body, burden data illustrated in Figures 7, and 8 and
from the following equation , _,
tw gl,
(4)
the total body dose equivalent rate, mRep y",
ae
=*
where
1 3 equilibrium dose equivalent rate to the total body per unit body
AEE
+
radioactive atoms were distributed among the body tissues as they would be fol-
hasty
The approximate nature of the estimate was due to the assumption that the
2,355
q = instanteous body burden, uci.
wai SMRaeE
wee
2M.
burden, mRem y~! ucim!,
lowing constant continuous uptake for periods of time much greater than the mean
residence time for the total body.
assumed.
In the case of 906, 862 of equilibrium was
These assumptions were not used in the estimate of the total dose
equivalent.
In addition, since mean adult body burdens were computed, a factor
of 1.2 was needed to adjust for differences in body mass relative to a 70 kila~
gram adult.
Table 5 lists values of I which were determined from information
given in ICRP59 and corrected for body masse differences.
30
TYP Gr
yg
ae
«
faye
Nes
AM ee
elena ls a4
eh te
aa