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Health hazard evaluation report: HETA-83-015-1809, Wellman Dynamics Corporation, Creston, Iowa.

Authors
Kominsky-JR; Wilcox-T; Lucas-C
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 83-015-1809, 1987 Jul; :1-47
NIOSHTIC No.
00174307
Abstract
A request was received from Local 17, International Molders and Allied Workers Union to evaluate possible hazardous levels of chemical substances in the welding and foundry areas at Wellman Dynamics Corporation (SIC-3321), Creston, Iowa. Crystalline silica (7631869) concentrations in the breathing zone of sand molders, core makers, sand mixers, and core knockout personnel ranged from 52 to 238 micrograms/cubic meter (microg/m3). Formaldehyde (50000) levels of 0.11 to 0.42mg/m3 were found in the breathing zones of coremakers, metal pourers and core knockout personnel, contributing to eye and upper respiratory tract irritation. Triethylamine (121448) was found at levels of 0.4 to 38mg/m3 in the breathing zone of coremakers, increasing respiratory distress. No excess levels were found of aluminum, magnesium, beryllium, inorganic fluorides, barium, methylene-bisphenyl-isocyanate, 1,1,1-trichloroethane, ethyl- alcohol, or ozone. The authors conclude that workers were exposed to potentially toxic concentrations of crystalline silica and formaldehyde. Workers were also experiencing eye and respiratory irritant exposures. The authors recommend the institution of an effective medical and environmental monitoring program, control of free silica dust exposure through engineering methods, medical examinations for workers with possible exposure to silica, and fit testing respirators.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Confirmed; HETA-83-015-1809; Region-7; Foundry-workers; Foundries; Foundry-sands; Pulmonary-system-disorders; Silica-dusts; Author Keywords: Foundries; crystalline silica; formaldehyde; triethylamine; aluminum; magnesium; beryllium; inorganic fluorides; methylene bisphenyl isocyanate; ozone; 1,1,1-trichloroethane
CAS No.
7631-86-9; 50-00-0; 121-44-8
Publication Date
19870701
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1987
NTIS Accession No.
PB88-149232
NTIS Price
A04
Identifying No.
HETA-83-015-1809
NIOSH Division
DSHEFS
SIC Code
3321
Source Name
National Institute for Occupational Safety and Health
State
IA; OH
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