Health Hazard Evaluation Report: HETA 93–0436: Trus Joist MacMillan, Deerwood, Minnesota

Details

• Personal Author:
  Husberg, Brad ; Jennison, Elizabeth A. ; Piacitelli, Chris A.
• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  In response to an employee request, the development of occupational asthma secondary to exposure to isocyanates was investigated at Trus Joist MacMillan (SIC-2493), Deerwood, Minnesota. The facility employed about 70 workers in the production of parallel strand lumber. Environmental and medical surveys were conducted before and after the institution of major changes in facility ventilation. Monomeric 4,4'-methylenediphenyl-diisocyanate (101688) concentrations in excess of the NIOSH Recommended Exposure Level (REL) of 50 micrograms/cubic meter were identified in two area air samples. Wood dust concentrations exceeded the REL of 1mg/m3 in three areas as well. Respiratory illness meeting the NIOSH case definition of occupational asthma was identified in 18 employees. Half of these cases developed after the institution of the ventilation changes. The authors conclude that a health hazard existed from exposure to isocyanates. The authors recommend that industrial hygiene practices be used to eliminate the hazards, and that a medical monitoring program be instituted.
• Subjects:
  Alveolitis, Extrinsic Allergic Asthma Asthma, Occupational Dust Forestry Isocyanates Occupational Exposure Occupational Health Safety Ventilation Wood

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• Keywords:
  4,4'-methylenedianiline 4,4-methylenediphenyl Diisocyanate Aspen Asthma Bronchial-asthma Cyanates Functional Isocyanate Group Hazard-Confirmed HETA-93-0436-2569 Hypersensitivity Pneumonitis Industrial-ventilation Lumber Lumber-industry MDA MDI NCO NIOSH-Author NIOSH-Health-Hazard-Evaluation NIOSH-Technical-Assistance-Report Occupational-exposure OSHA Region 5 Reconstituted Wood Products - Oriented Strand Boards Wood-dusts Wood Dust

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• Series:
  Health Hazard Evaluation Reports (HHE)
• Subseries:
  Health Evaluation and Technical Assistance (HETA)
• DOI:
  https://doi.org/10.26616/NIOSHHETA9304362569
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Field Study
• Place as Subject:
  Minnesota ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSHEFS - Division of Surveillance, Hazard Evaluations, and Field Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  32 pdf pages
• Contributor:
  Burkhart, Joseph E. ; Vandestouwe, Kurt H.
• NIOSHTIC Number:
  nn:00230691
• Citation:
  Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 93-0436-2569, 1996 Mar ; :1-30
• CAS Registry Number:
  4,4’-methylene diphenyl diisocyanate (CAS RN 101-68-8)
• Federal Fiscal Year:
  1996
• Peer Reviewed:
  False
• NAICS and SIC Codes:
  2493 - Reconstituted wood products - (SIC)
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4dbe931f07bf6bb937399852d13f7132eae901b6d5f831432bea1c8c07ee54617a4ed7d5957de614b9822a26cd078221161ce16e12d20019b42ac7c7c966e1b2
• Download URL:
  https://stacks.cdc.gov/view/cdc/171223/cdc_171223_DS1.pdf
• File Type:
  [PDF - 245.10 KB ]