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HMIS® stands for Hazardous Materials Identification System® (HMIS), an in-house labeling system copyrighted by the American Coatings Association (ACA). The program uses a numerical hazard rating system and labels with colored bars to indicate chemical hazards in the workplace.
HMIS® was originally developed for use by the paint manufacturing industry, but has since spread to numerous other service and manufacturing industries such as health care, chemical manufacturing, public utilities, transportation, education, and construction.
HMIS® labels always appear as a rectangle-shaped block of colored bars with hazard ratings of zero through four. Early versions of the HMIS® labels used a blue “health” bar on top, a red “flammability” below that, followed by a yellow “reactivity” bar and a white “PPE” area. There may be additional space on the label for other information, such as the product name, supplemental warnings, manufacturer information, or additional HMIS® information.
HMIS® III, the most current version of the system, replaces the yellow “reactivity” or “instability” block with an orange “physical hazard” block, which is more in line with OSHA defined hazards.
When American Coatings Association (ACA) first constructed HMIS® by using Health, Flammability, and Reactivity fields similar to those being used by the National Fire Protection Association (NFPA). The NFPA’s system was developed for emergency responders. ACA adopted the widely recognized ratings criteria used by NFPA for flammability and reactivity, but the health ratings criteria developed by ACA were based on OSHA health ratings.
Under the HazCom standard at 1910.1200(f)(6), OSHA allows the use of workplace labeling systems like HMIS but only in-house. Any containers which leave the workplace must be labeled following the requirements at 1910.1200(f)(1).
The specific physical hazards addressed include:
Employers are not required to use HMIS labeling in-house, but it is an option under the Hazard Communication standard at 1910.1200(f)(6).