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Nencennenerne
Project 2.65 - Analysis of Fallout and of Ease Surge - M. Morgenthau
OBJECTIVES
To obtain fallout samples on land and to perform radiophysical and
radiochemical measurements on the samples.
To prepare dose rate contours of the atoll srea from information gethered
by this project, other projects, and RadSafe.
To evaluate the role of the base surge in transport of radioactive meterial
ESCRIPTICN AND EXPERIMENTAL PROCEDURES
Intermittentfellout collectors, (IFC), and gross fallout collectors, (GFC),
were installed on islands in the Bikini Atoll and on the YAG's and LST in the
expected fallout zone.
The IFC timing intervals were one minute, five minutes,
or 30 minutes depending on location of the collector.
The equipment was in-
stalled prior to the shot and was activated by EGG Blue Boxes,
Samples to be
used for early decay measurements were recovered on D-day and the balance of
the samples were recovered on D+l and D+2,
helicopter.
All of the recovery was made by
Wire signals were used to activate the base surge detectors as a
warm-up period was required before shot time.
Some of the stations also
incorporated a tape fallout monitor, (TFM).
On D-day, D+l, and D+2, an aerial survey of residual radiation was made
over the respective islands by helicopter.
The measurements were taken by
means Of a probe on a long cable suspended below the hovering helicopter.
The
positions of the probe were determined by comparison with maps and aerial
photographs.
Two project personnel were stationed in the Program 2 Control
Center to consolidate data from the various projects and to assist the
Program Director in maintaining a situation plot.
Pacers
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