HCP Hearing conservation program HCS Hazard Communication Standard (29 CFR 1910, 1915, 1917, 1918, 1926, 1928) HCW Health care worker HEPA High-efficiency particle air HMO Health maintenance organization HPD Hearing protection device Hz Hertz ICOH International Commission on Occupational Health IH Industrial hygienist JCAHO Joint Commission for Accreditation of Health Care Organizations JSA Job safety analysis LD50 Lethal dose, 50 percent MCS Multiple chemical sensitivity MSD Musculoskeletal disorders MSDS Material Safety Data Sheet NAICS North American Industrial Classification System NCHS National Center for Health Statistics NEISS National Electronic Injury Surveillance System NHANES National Health and Nutrition Examination Survey NIEHS National Institute of Environmental Health Sciences NIHL Noise-induced hearing loss NIOSH National Institute for Occupational Safety and Health NORA National Occupational Research Agenda NSC National Safety Council NTOF National Traumatic Occupational Fatalities Surveillance System OHN Occupational Health Nurse 388 Continued on next page OM Occupational medicine OSH Act Occupational Safety and Health Act (1970) OSHA Occupational Safety and Health Administration OTC Over the counter (as in medications) PCP Primary care provider PEL Permissible exposure limits (OSHA exposure lim- its) PPE Personal protective equipment ppm Parts per million PT Physical therapy REL Recommended exposure limits (per NIOSH) RTW Return to work SARA Superfund Amendments and Reauthorization Act (1986) SOII Survey of Occupational Injuries and Illnesses SSDI Social Security Disability Insurance STEL Short-term exposure levels STI Sexually transmitted infection STS Standard threshold shift (also referred to as signifi- cant threshold shift) TLV Threshold limit value (ACGIH-recommended ex- posure limit) TQM Total quality management TSCA Toxic Substances Control Act TTS Temporary threshold shift TWA Time-weighted average USDA U.S. Department of Agriculture USDHHS U.S. Department of Health and Human Services USDOL U.S. Department of Labor USPHS U.S. Public Health Service UV Ultraviolet WHO World Health Organization