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26 F300S/F300SQ Ultraviolet Lamp System
Ultraviolet Radiation
There are no present U.S. government standards on worker exposure to ultraviolet
light. However, there is a NIOSH document, “Criteria for a Recommended
Standard...Occupational Exposure to Ultraviolet Radiation” (No. HSM 73-11009),
and several useful publications are available from the Bureau of Radiological Health
of the Food and Drug Administration.
Microwave Radiation
Fusion UV equipment is interlocked to shut down if microwave leakage in excess of 5
mW/cm
2
(milliwatts per square centimeter) is detected.
Ultraviolet radiation which is emitted during normal operation of the
Fusion Ultraviolet Lamp System can be dangerous to the eyes and
skin of personnel. Adequate shielding around the system and the
region to be irradiated must be provided. If unsafe levels of light are
allowed to escape during operation, then all personnel in the vicinity
of the lamps should be required to wear goggles with UV certified
lenses. Protection is needed for indirect as well as direct eye
exposure; UV certified lenses are recommended. Discomfort from
excessive eye exposure to ultraviolet light typically occurs about six
hours after exposure. Personnel who experience eye pain after
possible exposure to direct rays from the UV lamp should see a
doctor. Furthermore, in the event that adequate shielding is not
possible, all personnel within ten feet of the lamp should wear gloves
and long-sleeved shirts to protect hands and arms.
The Fusion UV Lamp System is powered by high energy RF
microwave power. This form of energy is identical to that used in
home microwave ovens and, as in the case of ovens, can be
dangerous if misused or inadequately shielded. In the Fusion UV
lamp, the shielding is adequate only as long as the lamp and the
screen on the bottom of the lamp are intact. Any rip or large hole in
the screen may lead to microwave radiation leakage in dangerous
amounts. The power to the lamp is interlocked to shut off if there is
excessive microwave radiation leakage. The lamp system should
never be turned on if the lamp housing and screen are not intact, or if
the microwave leak detector and interlock are not functioning.