TABLE 4.2 #1A
INGESTION
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
CESTUM-137
Lungs
Bone
surfaces
Liver
1.7
E-*’
31.7
ES
0-30 year
3.7
E-4
3.8
E-4
30-70 year
2.2
E-4
{2.4
Ed
STRONTIUM-90
initial year
4.7
ES
[2.4
Ea
1.8
E6
5.39
Ed
18
ES
0-30 year
9.2
E@
|5.0
E3
3.6
ES
1.1
E-2
3.6
ES
30-70 year
5.6
E-4
|3.0
E3
2.2
E5
6.6
E-3
2.2
ES
13
E-3
|1.9
E-3
10
E@
2.4
E2
4.2
E-3
3.9
E2
5.7
E2
3.1
£7
7.3
El
| 1.3
Eel
initial year
|
030 year
'
30-70 year
|
Red
BarTOW
initial year
| PUSTONTUM-239.-240
|
C.E.D.E.>/
AMERICTUM-241
5.1 £2
initial year
1.3
E-3
+30 year
3.9
B2
30-70 year
Like C.E.D.E
17.4 £2]
4.12 £7
9.6 EL
1.7 Bl
7.3
1.3
Like plutonium
[5.7 £2]
1.6
E6
El
El
Like plutonium
l
®/ It is assumed that the daily diet remains constant, but that the radionuclides in it
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 reccamendations (ICRP 1986, 1987). These factors allow for the fraction of
radionuclide absorbed from the gut, its distribution and residence time in the body, the
absorption and effectiveness of its radiation in the body, and its rate of physical decay.
b/ Committed effective dose equivalent (whole-body dose). Other doses are committed 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 wit dose to the whole body.
c/ E-5 signifies:
x 105.
29