Model 3710 Plasma Control Console
Operator’s
Manual
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Issued: 01/02
Page
14
outside the room. Contact Praxair Surface Technologies for additional
information.
Insulate Work Area
Blocking the path of sound transmission by lining the work area with
sound absorbing materials provides significant noise reduction. Consult
noise control experts for material recommendations.
Plan and Schedule to Reduce Exposure Time
Engineering controls focus on eliminating, reducing, or containing the
noise hazard. Administrative controls attempt to reduce exposure time.
Planning and scheduling are best used where spraying is intermittent.
Usually, spraying time is a small percentage of the total job compared
with setup, surface preparation, and finishing.
If spraying time exceeds the permissible levels for noise exposure,
schedule jobs over more than one shift or day to keep exposure within
maximum limits. More than one operator can spray jobs to keep the
exposure of any one person within limits. Spraying outside of regular plant
hours can control exposure of persons near the operation. Also, rotate
personnel assignments in the vicinity of the thermal spraying operation to
control exposure.
1.5.4 Protective
Clothing
When working in confined spaces, wear flame resistant clothing and
leather or rubber gauntlet gloves. Clothing should fit snugly around the
wrists and ankles to keep sprayed materials and dust away from the skin.
For work in the open, ordinary clothing may be sufficient. However, open
shirt collars and unbuttoned pocket flaps are potential hazards. Always
wear high-top shoes and cuffless trousers that cover the tops of the shoes.
If workers will be spraying toxic materials, consult a material supplier for
information on protective clothing.
Plasma spraying generates intense ultraviolet radiation that can cause a
"sunburn" through normal clothing. When plasma spraying, wear clothing
such as thick, tightly woven wool clothing that provides protection against
radiation. Also wear appropriate eye protection. For more intense
exposure, leather capes or aluminized clothing is necessary. Take care to
attach aluminized clothing to the outside of the face shield so radiation is
