Auxiliary Power Systems for Nuclear Plants

1. Special considerations must be given to providing dependable power to certain vital loads associated with the primary reactor system. 2. At the time of planning the electrical system to meet the requirements of the vital reactor loads, it is proper to review the special requirements of excitation systems and emergency loads of the conventional portion of the plant and to co-ordinate the planning and consolidate the systems in so far as it is practicable and advantageous. 3. The proposed scheme, using an auxiliary main-shaft-driven alternator, achieves a multiplicity of benefits at nominal cost. This plan provides a reliable power source for reactor control and generator excitation. It provides isolation of vital equipment from system disturbances and the maximum amount of economic inertial energy obtainable for shutdown power.