Electrical drives of the safety systems in nuclear power plants

This rule is to find its application in electrical drives in nuclear power plants. Actuating drives, control magnets for ventilators, machine drives and control member drives are part of this. The rule deals with the security and technical requirements for design, construction, calculation, fabrication, assembling, testing and operation. Furthermore, it places significant demands, with regard to planning and arrangement of electrical drives, on the accompanying technical systems. Furthermore, demands are placed on the aggregate protection for electrical drives of the security systems. The signals given to these systems do not, however, have precedence over the protection signals of the atomic reactor. (orig.)