3.2.9 USNS FRED C. AINSWORTH Dose Calculations
Dose calculations for personnel onboard the AINSWORTH on 1-2 March 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 2-9) 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 3-9.
Day
Time Period
1 March
0000-0600*
0600-1200
‘1200-1330*
1330-1700
1700-1800*
1800-2000
2000-2400*
Integrated
Intensity (mR)
x
Ship Shieldig
Factor
0
0
0
38.2
20.5
39.5
80.0
178.2 (Table 2-9)
=
Adjusted
Exposure (mR)
0
0
0
38.2
2.1
39.5
8.0
87.8
1.0
0.1
1.0
0.1
1 March film badge dose = (87.8 mR) (0.7 mrem/mR) = 61.4 mrem (Table 3-9).
2 March
0000-0800*
0800-1200
1200-1330*
1330-1700
1700-1800*
1800-2000
- 2000-2400*
-
160.0
80.0
27.9
47.1
10.2
20.9
35.8
381.5 (Table 2-9)
0.1
1.0
0.1
1.0
0.1
1.0
0.1
16.0
80.0
2.8
47.1
1.0
20.9
3.6
177.4
2 Marchfilm badge dose = (171.4 mR) {0.7 mrem/mR)= 120.0 mrem
Cumulative film badg dose through 2 March = 181 mrem (Table 3-9)
133