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Controlling Chromium Fumes

From United Air Specialists, Inc.
 

 
Knowing how to calculate the amount of weld fumes and, in turn, how to capture those fumes and provide clean air in the working environment has become especially important in light of the Occupational Safety and Health Administration's (OSHA's) new regulation for employee exposure to hexavalent chromium (Cr(VI)). Hexavalent chromium is a natural metal used in the manufacture of stainless steel. Even before the new Cr(VI) exposure regulation, OSHA had established limits of 5 mg/m3 for carbon steel and other types of welding to protect the health of welders and employees in the surrounding area. Hence, knowledge of the weld fume ratios and the calculations provided in this article will be extremely helpful in knowing exactly how much weld smoke is being generated, how much dilution air is required, and the amount of efficiency that will be needed from the dust-collection equipment.
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Topics of Interest
Hexavalent Chromium (CrVI) compounds are used as corrosion inhibitors and present an occupational hazard to workers that weld, cut or grind chromium-containing metals such as stainless steel. (Read More)
Hexavalent Chromium has become a hot topic in the thermal spray community and among welders. New OSHA regulations are forcing everyone to take a close look at their processes and implement changes to... (Read More)
OSHA recently announced a new standard for exposure to hexavalent chromium, published on February 28, 2006 and effective 90-days from publication. Hexavalent chromium is used in electroplating,... (Read More)
In 1998, both the Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH) issued more stringent requirements relating to the use of... (Read More)
The lead content of solder pads and components can be accurately quantified. It is easy to distinguish an elevated lead content at critical locations The EU Directives WEEE*, RoHS* and ELV*, which... (Read More)
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