Unique Requirements: Class 1E Power System

This chapter deals with Class 1E Electrical Systems starting with a general description followed by a brief introduction to specific requirements for Class 1E equipment. It provides general description of the Class 1E Electrical Systems and their interfaces with the nuclear plant and with other systems. The AC power system should include power supplies and distribution systems arranged to provide power to the Class 1E ac loads and controls. The DC power systems include power supplies and distribution systems arranged to provide power to the Class 1EDC loads and for control and switching of the Class 1E Power Systems. The instrumentation and control power systems include power supplies and distribution systems arranged to provide ac and/or DC electric power to the Class 1E Instrumentation and Control loads. Containment electrical penetrations are special devices designed to carry the cables and conductors that must penetrate containment.