3.2.14 USS LST-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.
Ship Shieldig
Factor
=
Adjusted
Exposure (mR)
0
0
0
0
0
0
40.0
43.0
69.0
90.5
162.2
206.5
61 T.2 (Table 2-14)
1.0
0.1
1.0
0.1
1.0
0.1
40.0
4&3
69.0
9.1
162.2
20.7
Ww
0000-0600*
0600-1200
{200-1330*
1330-1500
1500-1600*
{600-1700
1700-1800*
1800-2000
2000-2400*
x
Oo
6 May
Integrated
Intensity (mR)
ta)
Time Period
"
Day
6 May film badge dose = (305.3 mR) (0.7 mrem/mR) = 213.7 mrem (Table 3-14)
7 May
0000-0800*
0800-1200
1200-1330*
1330-1700
1700-1800*
1800-2000
2000-2400*
177.5
42.5
14.0
31.3
8.6
16.7
0.1
1.0
0.1
1.0
0.1
1.0
32.0
322.6 (Table 2-14)
0.1
7 May film badge dose = (113.8 mR) (0.7 mrem/mR) = 79.7 mrem
17.8
42.5
1.4
31.3
0.9
16.7
Cumulative film badge dose through 7 May = 293 mrem (Table 3-14)
141
3.2
113.8