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A Class 3R laser is considered safe if handled carefully, with restricted beam viewing. With a class 3R laser, the MPE can be exceeded, but with a low risk of injury. Visible continuous lasers in Class 3R are limited to 5 mW. For other wavelengths and for pulsed lasers, other limits apply.
See the BNL Training and Qualifications Web site for course. information. The potentially more hazardous Class 3B and 4 laser systems are emphasized, but requirements. for all lasers used at BNL are covered in this subject area. Exhibits that illustrate the. implementation of the Laser Safety Program for different types of installations at BNL are. included.