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6.5
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ONTAMINATION AND PROTECTION
Project Officer - J. C, Maloney
Objectives
/
The objectives of this project are: (1) To determine
relative contamination and decontaminability of outside con.
aaam
struction surfaces exposed to fall-out £107 ARNESON
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(2)
To determine the effect of salt water wash-down and sizple
pre-protection measures in mintmizing contamination.
Instrumentation
A set of fourteen four-feet-square panels of widely
used exterior construction surfaces were mounted at their normal
orientations on each of the two drone ships (Project 6.4%) which
were operated in the high-intensity fall-out area following the
shot.
Procedure
Panels were recovered from the ships and moved to the
Parry decontamination area.
Oamma and station intensity readings
were taken at sixteen locations on each panel.
The panels from
the washdown protected ship were of such low intensity that
decontamination was not necessary.
The panels from the unpro-
tected ship were subjected to various hosing and serubbing
techniques with gamma and station intensity readings taken
between each decontamination pass.
Intensity readings on all panels were taken at the
" beginning and end of each day's operations to be used for direct
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