TABLE 4.2 #13
INHALATION
FACTORS TO CONVERT ADULT "INITIAL DAILY INTAKE (pCi/d") TO COMMITTED
"WHOLE BODY" OR "TISSUE" DOSE (rem) FOR DIFFERENT PERIODS OF DAILY INTAKE ®/
Radionuclide
& period
C.E.D.E.°”
Red
marrow
CESIUM-137
initial year
10
E-S/
19.9
EB6
|
{
0-30 year
2.2
E-4
|2.0
ES
|
30-70 year
Lungs
|
Bone
surfaces
Liver
|
|
12.
E5
9.4
E6
{1.0
ES
2.2
Ed
| 2.0
E4
|2.2
E4
|
|
STRONTTUM-90
initial year
1.7
E5
14.2
E4
4.6
E6
!
92 E4
3.1
ES
0-30 year
1.6
E3
|8.7
E3
9.5
ES
| 1.9
E2
(6.4
ES
2.3.
!
|
£2 2.8
BO
15.
El
6.9
El
8.4
El
[1.5
El
EO | 9.2
E-l
1.22 E-2
|2.0
El
30-70 year
PLUTONIUM-239.-240
& AMERICIUM-241
initial year
0-30 year
30-70 year
15
El
{2.3
El
4.5
EO
{6.9
EO
6.0
EO
{9.2
I
a/ It is assumed that the radionuclides in soil decay spontaneously. The table provides
dose factors in rem/picocuries/day. It is based on NRPB (1987) which provides factors in
Sv/Bq (= 3.8 x rem/picocurie), and is consistent with ICRP recommendations (ICRP 1986,
1987). These factors allow for the fraction of radionuclide absorbed, its distribution and
residence time in the body, the absorption and effectiveness of its radiation in the body,
and its rate of physical decay. See p. 24.
>/ Committed effective dose equivalent (whole-body dose).
Other doses are conmitted dose
equivalents (tissue dose). The C.E.D.E. is the sum of the dose equivalents to 11 tissues of
the body of a standard man, each weighted by the risk resulting from a unit dose to that
tissue as compared to the risk from a unit dose to the whole body.
c’ E-5 signifies:
x 10-5.
30
l