850
NOTES
Table $. Total body dosmmetric average for external plas ‘alterna! sources for former Bikins rendenty
Popul ation
Desert pcioa
Tkmber
of Persons
Mean Residence
Tacerval, Years
Dose Equivalent During
Residence [aterval, ales
adule asles
17
4.
1100
110
Adult females
16
4.)
§30
a5
Caildeen
(5-14 years)
12
4.4
12090
140
ternal °’Cs and man-made external radiation, and
mathematical models applied to inhabitants who
did not participate in our personnel monitoring
programs. The models describe various regimes
for the uptake, retention and excretion of internally deposited radionuclides. Finaily, dosimetric
models which allow for constant continuous uptake of “Sr and stepwise increasing uptake for
'7Cs were chosen to determine the internal dose
equivalent and dose equivalent commitmentforail
inhabitants. Thus for residence periods between
the years 1969 and 1978, these figures evince a
maximally exposed person recetving a whole body
dose equivalent and commitment of 3 rem, and a .
the total body dose equivalent commitment upon
departure from Bikini Atoll in August 1978. A
standard deviation for these quantities of approx.
+ 40% of the mean was observed in adult subgroups. Internal dose equivalent distributions in
Figs. 1-3 were constructed by first calculating
mean daily activity ingestion rates for different
subgroups of the Bikini Island population
based on the individual measurement data from
which Tables 1, 2 and 4 were derived. Secondly,
these mean activity ingestion rates and individual
residence internal values we used as input data to
RACIATICN
pl 5
FREQUENCY
°
uw
o
Io
z
Qo
—
Oo
NET EXTERNAL
E
Qo Torrey
Dose Equivalent
Commitment, ales
The
5
RESIDENCE INTERVAL (yrs)
» IO
Oo
90,
z
a 5
we
RADIATION TO
390
BONE MARROW
Sati.
lie
Oo
‘
0
i
ep
»
r
3%
=
Cs-
zs
s
3
=
asprntemntment
on
.
$00
1900
i500
DOSE EQUIVALENT (mRem)
137m_
aAstsTON 79
TOTAL BOOY
=“dl
sy
0
6
>» 10
9
'
.
10d”
200
300
DOSE EQUIVALENT (mRem)
f
lenatowNE
RADIATION
hed
om
“1000 1800 2000
DoseSP OUIVALENT (mRem)
Zo
3 5
35
a
ira
z
TOTAL 8O0Y
RADIATION
¥
Obed
0
Ja
nO
1000
2000
3000
BOSE EQUIVALENT (mRem)
ferent
2000
3000
° pose OUIVALENT (mRem)
Fic. 3. Total female distribution of dose equivalent (during and post residence) or residence
interval for inhabitants of Bikini Island, Bikini Atoil.