3.2.14 USS
975 Dose Calculations
Dose calculations for the LST-975 on 6-7 May, when YANKEE fallout was
encountered, are detailed below. Time periods below deck are indicated by an asterisk
(*), After 7 May, the daily film badge dose is calculated by multiplying the integrated
intensities in Table 2-14 by the time-averaged shielding factor (0.46), and then by the
film badge conversion factor (0.7). Cumulative film badge doses through 31 May 1954
are given in Table 3-14,
Integrated
Intensity (mR)
6 May
0000-0600*
0600-1200
{200-1330*
1330-1500
1500-1600*
1600-1700
0
0
0
40.0
43.0
69.0
1.0
0.1
1.0
0
0
0
40.0
4.3
69.0
1800-2000
2000-2400*
162.2
206.5
1.0
0.1
162.2
20.7
‘
ad
9.1
Ww
611.2 (Table 2-14)
Exposure (mR)
oOo
0.1
=
a
90.5
Factor
Adjusted
Time Period
1700-1800*
«x
Ship Shieldig
Day
6 May film badge dose = (305.3 mR) (0.7 mrem/mR) = 213.7 mrem (Table 3-14)
’
7May
9000-0800
0800-1200
1200-1330*
1330-1700
17G0-1800*
1800-2000
2000-2400*
177.5
42.5
14.0
31.3
8.6
16.7
32.0
322.6 (Table 2-14)
O.1
1.0
0.1
1.0
0.1
1,0
0.1
17.8
42.5
14
31.3
0.9
16.7
3.2
113.8
7 May film badge dase = (113.8 mR) (0.7 mrem/mR) = 79.7 mrem
Cumulative film badge dose through 7 May = 293 mrem (Table 3-14)
141