F.
Gamma Dose Estimates
The gamma dose for each interval of the cases specified above is calculated
from equation (4)
(4)
:
D=R,
x
t
t1
2 todt
1.2
= Rx!
by multiplication of the approximate unit reference dose rate (R, ) from Table 4
by the time integral (1) from Table 5.
Table
5
Time Parameters of Interest for Dose Calculation
Event
Time (t)
t “1.2
Shipboard Deposition
H + 32.5
.0153
+109
.0036
Pearl Harbor Arrival
+175
.0020
Crew Evacuation
+233
.0014
Radiological Survey
+288
-0011
Thundershowers
-
I =
t
t
JS 2 tat
|
0.54
0.18
1
0.10
0.07
The total cumulative dose for each case is then computed by summing of appro-
priate intervals covering the desired time period.
For the time interval of interest
here, from fallout depostion on PATAPSCO on 2 March (H+32.5) to crew evacuation at
Pearl Harbor on 10 March (H+233), the total cumulative doses estimated for each case
are shown below.
17)