DNA 1240H-2
Table 17-9.
Estimates of portion of external gamma dose due to
ingress of contominant, DD-592, Shot Umbrella, 66
Compartment
GITR Total
Dose (r)
Film Badge
Dose (r)
Ingress Dose
Estimate (r)
{4% Contribution|
Tue to
268 + 43
290 + 58
2 to 78
0.7 to 27
52+ 8
58 + 12
4 to 18
8 to 35
65 + 10
65 + 13
8 to 26
12 to 4o
61+ 12
95 +419
9 to,31
11 to 38
Forvari
25+h
(lower Fireroomp:
level)
26+5.2
8 to 13
33 to 50
After Fireroom
2B +h
28+5.6
toils
39 to 54
After
Engineroom
After
Crew’
26+4
32+6.u
1h to 28
5h to 69
[1.5 te 50
1 to 32
Galley
“ForwardFireroom
(upper level)
After Fireroom
(upper level)
t
ineroom
\eperSeved)
(lower level)
(lover evel)
Quarters. °
1184 + 37
158 + 2h
% that
It was concluded”
Ingress Dose
full-power operation of both boilers with
ventilation systems open would more than double the fireroom ingress
dose estimated for the test conditions (l-boiler operation and sealed
ventilation openings).
In addition, use of regular boiler fuel (in-
stead of the diesel o11 used during the tests) would result in larger
soot deposits and therefore probably further increase deposits of radioactive material in the boiler.
Estimates of total ingress dose (boiler air and ventilation air)
from film-badge data for Shot Wahoo indicate that the doses in test
compartments in DD~592 were comparable to those at Shot Umbrella, even
though the ship was slightly further away from surface zero.
Estimates
of external doses due to boiler air alone on all the ships were higher
Miles gy a COPY
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i
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7
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for Shot Wahoo than for Shot Umbrella by factors of 2 to 6.
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$
17-110
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