Previous development safety at work in mechanical engineering. The development of the principles of equipment to work with the security aspect design. Characterization of structural defects. Simulation behavior mechanical construction in exploitation. Methods of design and testing of protective devices. Part of teaching the course is conducted through independent study and research in areas related to the case. Research work includes active monitoring of primary scientific sources, organizing and conducting experiments and statistical analyzes, numerical simulations, possibly in the area of writing subjects.