3.2.10 USS GYPSY Dose Calculations
Dose calculations for the GYPSY on 1-2 March when BRAVO fallout was
encountered are detailed below. Time periods below deck are indicated by an asterisk
(*).
After 2 March, the daily film badge dose is calculated by multiplying the
integrated intensity topside (Table 2-10) by the time-averaged shielding factor (0.46);
the integrated intensity below is multiplied by the fraction of the day spent below
deck (0.6). Contributions from each source are summed and converted to a film badge
dose. Cumulative film badge doses through 31 May 1954 are given in Table 3-10.
Day
Time Period
| March
0000-0600*
0600-1200
1200-1330*
1330-1700
{700-1800*
1800-1900
Integrated
Intensity (mR)
x
Ship Shielding
0
0
0.8
324.5
240.0
223.7
1900-2400*
Factor
0.1
1.0
0.1
1.0
730.8
1519.8 (Table 2-10)
0.1
=
Adjusted
Exposure (mR)
0
0
0.4
324.5
24.0
223.7
73.1
645.4
1 Marchfilm badge dose = (645.4 mR)(0.7 mrem/mR) = 451.8 mrem (Table 3-10)
2 March
0000-0800*
0800-1200
1200-1330*
1330-1700
1700-1800*
1800-2000
2000-2400*
-
852.6
241.6
66.0
142.7
38.5
73.0
140.0
1554.4(Table 2-10)
0.1
1.0
0.1
1.0
0.1
1.0
0.1
85.3
241.6
6.6
142.7
3.9
73.0
14.0
567.1
2 March film badge dose = (567.i1mR)(0.7 mrem/mR)= 397.0 mrem
Cumulative film badge dose through 2:March = 849 mrem (Table 3-10)
135