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Foundry air contaminants from green sand molds.
Scott-WD; James-RH; Bates-CE
Am Ind Hyg Assoc J 1976 Jun; 37(6):335-344
The major gases evolved from foundry molds have been determined in the laboratory by gas chromatography. The principal gases evolved during pouring and shakeout of castings include hydrogen (1333740), carbon-monoxide (630080), carbon-dioxide (124389), methane (74828), and other low molecular weight hydrocarbons with smaller amounts of ammonia (7664417), hydrogen-cyanide (74908), and sulfur-dioxide (7446095). The results of these experiments indicate foundry workers may be exposed to considerable amounts of carbon-monoxide evolved from green sand molds containing carbonous materials. Adequate ventilation and fresh make-up air may be necessary in the pouring area, the run-out lines where the casting cools in the sand and in the shakeout area. Other suggestions, including permanent mold techniques are suggested.
NIOSH-Publication; NIOSH-Grant; Pulmonary-system-disorders; Air-pollution; Hazards; Iron-and-steel-industry; Iron-industry; Casting; Primary-metallurgical-processes; Foundries; Molding; Work-operations; Green-sand-molding; Air-contamination; Contaminants; Control-measures; Toxic-gases
Engineering & Applied Sciences Southern Research Institute 2000 Ninth Avenue South Birmingham, Ala 35205
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Issue of Publication
American Industrial Hygiene Association Journal
Southern Research Institute, Birmingham, Alabama
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division