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.
Integrated
Time Period
I March
0000-0600*
0
1200-1330*
{330-1700
1700-1800*
0.8
324,
240.0
0.1
1.0
0.1
1900-2400*
730.8
0.1
0600-1200
1800-1900
Intensity (mR)
x
Ship Shielding
Day
Factor
=
Adjusted
Exposure (mR)
0
0
223.7
1.0
1519.8 (Table 2-10)
0
0.1
324.5
24.0
é
223.7
73.1
645.4
1 March film 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
0.1
241.6
1.0
66.0
0.1
142.7
1.0
38.5
0.1
73.0
1.0
140.0
0.1
15546.4(Table 2-10)
2 March film badge dose = (567.1mR)(0.7 mrem/mR) = 397.0 mrem
85.3
241.6
6.6
142.7
3.9
73.0
14.0
567.1
Cumulative film badge dose through 2 March = 849 mrem (Table 3-10)
L35