CHAPTER
RESULTS
h.1
RESULTS
k.l.k
Calculations |
Radiation intensity readings for each surface were averaged
and corrected for background.
These were then corrected for decay
to H + 2h hr. Decay corrections plotted from Project 6.) date (see
Fig. 4.1) were applied to Shot 2 and Shot 4 data, and the -1.2 decay
law was utilized for Shot 6 data.
In order to be able te compare the
YAC 39 panel contamination levels with the YAC 0 levels for Shot 2,
the intensity levels of the YAG 39 panels were multiplied by tae ratio
of the activity of the fallout to which th) ships were exposed.
Average residual percentages for e'ch surface were calculated
by dividing the average residual intensits (times 100) after decon~
tamination by the average initial intensity as received in the decon-
tamination area, all intensities having been corrected to a common
time basis of H + 2); hr. Some of the contamination as originally
retained on the panels may have been removed by weathering end handling
prioy to the initial survey. It is believed that this removal, if any,
is emall and of such a non-etenacious nature that low pressure hosing
would have removed it. Also, it is quite possible in a real situation
that there would be weathering effects during the emergency and
waiting periods between detonation and the start of recovery operations
In view of these facts, it is believed that data presented are
realistic, Rasidual percentages for the washdown protected panels on
the YAG 39 were calculated by dividing the normalized YAG 39 panel
average initial intensities (times 100) by the YAG LO panel average
initial intensities,
4.1.2 Summary
Table 4.1 is a summary of average gamma initial intensities
per panel for Shots 2, , and 6 corrected to H + 2h hr.
-
fables 4.2, 4.3, and h.k summarize residual percentages after
decontamination based on gamma data for surfaces contaminated after
22
CONFIDENTIAL — RESTRICTED DATA