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Chapter 4: High Performance Features and Safet
y
Safety Precautions
1. Although the enclosure has been engineered to maintain
optimum operator safety, caution should always be used
while working. Prior to using the enclosure, check to make
sure that the exhaust blower is operating and that air is
entering the enclosure at its specified face velocity. The
use of an airflow monitor is recommended to alert the user
to a problem with airflow.
2. Use good housekeeping in the enclosure at all times. Clean
up spills immediately. Periodically clean enclosure
interior.
3. Do not overload the work surface with apparatus or work
material. The safe operation of the enclosure is based upon
having proper airflow through the structure. Do not place
large objects directly on the work surface. Instead, elevate
the object 3/4" on blocks to allow a flow of air under the
object and into the rear baffle exhaust slots. Ensure blocks
are level and secured in place.
4. Blocking large portions of the rear baffle will change the
airflow pattern in the enclosure causing turbulence. (Do
not store containers or supplies against the rear baffle, as
this will affect airflow).
5. Always work with your hands as far back into the enclosure
as possible. Keep all powders, chemicals and apparatus
inside the lower air foil of the enclosure.
6. Do not work in this enclosure without the exhaust system
running.
7. Perchloric acid use in this enclosure is prohibited.
8. High-level radioisotope materials are prohibited in this
enclosure. Consult your Safety Officer.
9. Avoid cross drafts and limit traffic in front of the enclosure.
Air disturbances created may draw contaminants out of the
enclosure.
10. A qualified certification technician should test the
enclosure before it is initially used. The enclosure should
be validated whenever it is relocated.
11. The use of safety goggles, protective clothing, gloves and
any other personal protective equipment recommended by
your safety officer should be used.