Laser Warning Signs with Magnetic Back
The expansion of laser usage in the workplace has given rise to a fairly well-informed work force. Most laser personnel (or anyone who risks exposure to lasers) are aware that proper safety guidelines must be followed, including the use of proper safety barriers or eyewear to protect the eyes. But did you know that proper laser signage is required by OSHA and ANSI standards? Only appropriate signage, specific in content and design (right down to the color of the lettering and background), must be used.
The following is an excerpt from CONTROL MEASURES AND SAFETY PROGRAMS, part VI of the OSHA Technical Manual, Section III, Chapter 6:
POSTING WITH APPROPRIATE LASER WARNING SIGNS
a. Class IIIA (beam irradiance 2.5mW/cm²), Class IIIB and Class IV lasers: Require the ANSI DANGER sign format: white background, red laser symbol with black outline and black lettering (see Appendix III:6-4). Note that under ANSI Z135.1 criteria, area posting is required only for Class IIIB and Class IV lasers.
b. Class II or Class IIIA areas (if area warning is deemed unnecessary by the LSO): All signs (and labels) associated with these lasers (when beam irradiance for Class IIIA does not exceed 2.5mW/cm²) use the ANSI CAUTION format: yellow background, black symbols and letters.
c. During times of service and other times when a temporary laser-controlled area is established, an ANSI NOTICE sign format is required: white background, red laser symbol with blue field and black lettering. This sign is posted only during the time when service is in progress. Examples of area warning signs and logotype designs are given in Appendix III:6-4.