Engineering control of welding fumes.
NIOSH 1974 Sep; :1-122
An experimental investigation was conducted to define satisfactory criteria for the control of welding and cutting fumes using local exhaust ventilation methods. Based on the tests with breathing level fume samples, shielded manual metal arc welding on carbon steel and stainless steel, and gas shielded arc welding on carbon steel were judged to constitute the greatest potential health hazards. Analysis of breathing zone fume samples indicated that the prevailing standard of capture velocity, i.e. 100 feet per minute, is extremely effective in controlling fume concentrations. Ventilation system requirements were derived on the basis of a given set of ground rules which included environmental conditions and base materials. Recommendations are made for development of criteria for welding in confined spaces, welding with mixed facilities, and welding on paint-primed and zinc coated base metals. (Contract No.
NIOSH-Contract; Contract-099-72-0076; Industrial-hygiene; Environmental-engineering; Safety-engineering; Air-contamination; Ventilation-systems; Exposure-limits; Welding-industry; Exhaust-systems; Air-quality-control
NTIS Accession No.
(NIOSH) 75-115; Contract-099-72-0076
National Institute for Occupational Safety and Health