i
of a similar Task Unit.
One phase of the pre-test operations of TU 7.6.6 consisted of
determining the sensitivity of the test materials through normal
exposure of heat, humidity, and wind.
The biological exposure cans
were located in position and painted or covered with a variety of
materials.
Some were painted white, some were painted with aluminum
paint, others were covered with glass wool, and still others had
wooden sun-shades erected.
The temperature inside these containers
was measured daily with maximum and minimum thermometers and it was
determined that the white paint proved the best protection from the
solar radiation.
The prevailing wind was of considerable assistance
in keeping the containers cool.
Similar studies were conducted to
determine the maximum and minimum temperatures within the Yards and
Docks and Corps of Engineers structures and within the land and water
test animal containers,
Film badges were exposed for varying periods
in the sunlight to be used as controls for the badges exposed during
the tests.
The two Chemical Corps projects under the cognizance of TU 7.6.6,
the measurement of particle size by means of cascade impactors and the
test of collective protectors for the removal of radioactive materials
involved somewhat complicated installations within the OCE structures.
The cascade impactors were battery operated and involved relatively
simple installation, but unfortunately, in two of the structures slight
alterations were required in order to attach the inlet of the cascade
impactor to the one-inch pipe through the wall of the structure.
79:
Section IX