The training manual considers measures of protection against some dangerous and harmful production factors characterizing the working conditions of the working personnel of technological lasers. The basic principles of regulation of laser radiation exposure and classification of laser installations according to the degree of danger of generated radiation are given . Examples of determination of maximum permissible levels of laser radiation and classes of laser products are presented . Conforms to the program of the course "Life Safety" . The textbook is intended for the implementation of the section "Life Safety" of diploma projects and works for students , students in the specialty 280100 "Life Safety" and 150404 "Metallurgic machines and equipment" , as well as for students and teachers of all specialties and departments of the Institute in the educational process and in the performance of research work .