Three people were directly engaged in particle sample removals.
A
fourth person served as an overall supervisor to ensure compliance with
sample removal procedures.
A minimum distance of 25 feet (8 meters)
was
used as a criterion for separation of sample removal equipment from the
hot sample pod, as well as for personnel while not removing samples.
Per-
son No. 1 advanced to the pod, cut the filter-retaining wire (Figure 27),
then returned to his initial position, still holding long-handled tongs.
Person No. 2 advanced with a 9-foot (3-meter) removal pole, secured the
sample
(Figure 28), and deposited it in the shielded "cave," or enclosure
(Figure 29).
Person No.
1 stood by to help No. 2 by using the long-handled
tongs if the sample should fall to the ground.
After the sample was de-
posited in the cave, he returned the tongs to the tool trailer and secured
a hook tool.
He then joined No. 2 and opened the sample holder for No. 3
to insert a rolling tool over the filter paper (Figure 30).
rolled the filter paper
(Figure 31), No. 1 and No.
the cave, aircraft, and other radiation sources."
oo
As No. 3
2 stood “well clear of
Person No. 3 put the
ROS ago --~.
me ee ee
Figure 27.
Cutting filter paper retaining wire in left tank, CASTLE.
141