Signs & Postings
ANSI Z136.1 requires that lasers and laser systems have appropriate warning labels and that the rooms in which they operate bear appropriate warning signs. Sign for laser laboratory doors are provided by the LSO; however, laboratory supervisors and laser users/operators must be familiar with the signage requirements.
The signal word “Danger” must be used with all signs and labels associated with all lasers and laser systems that exceeded the MPE for irradiance, including all Class 3R, Class 3B and Class 4 lasers/ laser systems. The Optical Density (OD) of the protective eyewear and wavelength shall be shown on the sign for a location requiring the use of eyewear.
The signal word “Caution” must be used with all sign and labels associated with all Class 2 and Class 2M lasers and laser systems, which do not exceed the appropriate MPE for irradiance.
The signal word “Notice” must be used on signs posted outside temporary laser-controlled area such as during periods of service.