TASK GROUPS 7.1 AND 7.5 BIKINI PERSONNEL.
For the elements
TG 7.1
and TG 7.5 at Bikini, the mean value of the crew of the ship to which they
were evacuated has been used to calculate collective exposure.
This may
result in both overestimates and underestimates, depending on ass@mptions.
Task Group 7.4 Exposures
The contributions to the JTF 7 collective exposure from the sampler
aircraft flight crews and ground personnel have not been consider
summary, as they cannot be readily extracted from Reference 13 or
estimated.
in this
Jsimply
Detailed records, however, are available on cloud tracker and
Sampler aircraft contamination
(Table 24).
For BRAVO, the initial radioactive decay period was 20 hours of more
before decontamination was undertaken.
4 March for WB-29 No.
The reading of 12.000 R/hrfon
7335 is probably a typographical error in th@
document (Reference 30).
Other records (Reference 29)
source
indicate that 4.755
R/hr was the highest contamination read on an aircraft from BRAVO, Jand
that was on 1 March.
Since the figure of 4.755 R/hr is not shown
jn Table
24, it was probably recorded on an aircraft for which there are no
fdata in
the 4926th document
R/hr
(Reference 30).
The reason a reading of 12.00@
on 4 March is of some concern is that it means the radiation intendity on
1 March
could have been 2,000 R/hr (ete? decay rate), a most unlikely level.
If
0.120 mR/hr was the actual 4 March reading, then on 1 March the intknsity
could have been 20.300 R/hr, which is within bounds for similar airfraft
on other events.
Because of a reported immediate wash with a subsequent
reading of 0.065 R/hr, more validity can be associated with a readigig of
0.120 R/hre for the first survey.
No. 038.
Another late first survey was on
¥9-84G
Applying similar assumptions, the 1 March intensity could fhave
been around 1.520 R/hr.
By the same token, B~36 No. 1086 on 1 Marcl{ might
have had a reading of some 50.000 R/hr.
Personnel Exposures -- Rongerik
Twelve film badges were issued by TG 7.1 radsafe for the personnpl on
this remote weather station.
These badges were numbered 00309 through
238