Health hazard evaluation report: HETA-87-099-1938, Louisiana-Pacific Corporation, Olathe, Colorado.
Daniels WJ; Hales T; Gunter B; Seligman P
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 87-099-1938, 1988 Dec; :1-41
In response to a request from the Colorado Department of Health, an investigation was made at the Louisiana-Pacific Corporation (SIC- 2493), Olathe, Colorado, of respiratory problems possibly due to exposures at the workplace. The company produced waferboard using a heat and pressure cured resin/wax binding material containing 4,4- methylenediphenyl-isocyanate (101688) (MDI). Thirteen cases of pulmonary disease (12 cases of asthma, and one case of hypersensitivity pneumonitis) were identified by medical testing in three current and ten former employees. Most of these cases probably originated after the introduction of diisocyanate into the production line and before the currently used ventilation equipment was in place. Two of 23 personal air samples contained quantifiable concentrations of MDI, for time weighted average concentrations of existed from airborne exposure to diisocyanates. There may be a risk of significant exposure during maintenance activities if proper personal protective equipment is not used. Previously sensitized workers may react at very low concentrations. The authors recommend that engineering controls be maintained at a high level, that good housekeeping practices be adhered to, that a regular program of air monitoring be instituted, that signs warning the danger of exposure to diisocyanate be posted, that employees be instructed in the use of personal protective equipment, and that a program for medical screening be adopted.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-87-099-1938; Region-8; Hazard-Confirmed; Pulmonary-system-disorders; Lung-function; Woodworkers; Wood-dusts; Adhesives;
Author Keywords: Waferboard; 4,4-methylenediphenyl isocyanate; MDI; polymethylenepolyphenylene polyisocyanate; PMPI; asthma; hypersensitive pneumonitis; aspen; wood dust; isocyanate group
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health