Dose calculations for personnel onboard the APACHE 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 2-3) 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 for the APACHE's crew through 31 May 1954 are given in Table 3-3.

Day

Time Period

| March

0000-0600*
0600-0700
0700-0800*
0800-1200
1200-1330*
1330-1430
1430-1500*
1500-1730
1730-1900*
1900-2000
2000-2400*

Integrated

Intensity (mR)

x

Ship Shielding

0
0
0
0
1.5
5.0
3.7
31.0
29.0
24.7
120.
234.9 (Table 2-3)

Factor

=

Adjusted

Exposure (mR)

0.1
1.0
0.1
1.0
0.1
1.0
0.1

0
0
0
0
0.2
5.0
0.4
51.0
2.9
24.7
12.0
96.2

1 March film badge dose = (96.2 mR) (0.7) = 67.3 mrem (Table 3-3)

2 March

0000-0800*
0800-1200
1200-1330*
1330-1700
1700-1800*
1800-2000
2000-2400*

229.4
64.8
15.0
35.0
10.0
. 20.0
35.8
410.0 (Table 2-3)

0.1
1.0
0.1
1.0
0.1
1.0
0.1

2 Marchfilm badge dose = (148.8 mR) (0.7) = 104.2 mrem

22.9
64.8
1.5
35.0
1.0
20.0
3.6
148.8 mR

Cumulative film badge dose through 2 March = 172 mrem (Table 3-3)

122

Select target paragraph3