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Evaluation of worker exposures during the manufacturing of high quality corrosive resistant stainless steel products and fabricated piping systems.

Hall-R; Rhodes-D; Page-E
American Industrial Hygiene Conference and Exposition, May 21-26, 2005, Anaheim, California. Fairfax, VA: American Industrial Hygiene Association, 2005 May; :59
NIOSH conducted a health hazard evaluation of worker exposures during the welding and manufacturing of stainless steel products and fabricated piping systems. Worker representatives expressed concerns about potential carcinogenic effects from exposure to nickel and chromium. Personal breathing zone air sampling was conducted during cutting, welding, and grinding for elements (including nickel and chromium), total welding fumes, hexavalent chromium, ozone, nitrogen dioxide, and carbon monoxide. Samples indicated the potential for some workers to be exposed to nickel and hexavalent chromium concentrations above the NIOSH REL, and to manganese above the ACGIH TLV. PBZ results indicated the highest concentrations for nickel, manganese, and hexavalent chromium occurred during welding operations inside large stainless steel pipes or while welding fins on a large stainless steel pipe. Ozone results indicated concentrations exceeded the NIOSH REL ceiling limit, and indicate the potential to exceed ACGIH, and OSHA criteria (if consistent welding is accomplished throughout the work shift) during welding operations inside pipes. Although the potential for exposure to Ni and Cr exists, at the time of our evaluation the types of cancers linked to these substances, have not been reported among current or former employees. Recommendations were provided to help reduce exposures.
Workers; Occupational-exposure; Stainless-steel; Health-hazards; Occupational-health; Welding; Welders; Welding-industry; Carcinogenicity; Carcinogenesis; Carcinogens; Exposure-levels; Nickel-compounds; Chromium-compounds; Air-sampling; Breathing-zone; Manganese-compounds
7440-47-3; 7439-96-5; 7440-02-0; 18540-29-9
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American Industrial Hygiene Conference and Exposition, May 21-26, 2005, Anaheim, California