Standby Power Supplies for Nuclear Generating Stations

Selection of diesel generators for use as standby power supplies for nuclear generating stations utilizing light water reactors has become an uncertain and time consuming process. Better understanding of the requirements and problems involved will lead to the development of a selection process in which there is confidence and with which delays will be reduced. Requirements discussed are those established by regulatory bodies, nuclear power plant standards and plant safety analyses. Problem areas investigated are load determination, rating selection and other considerations, such as control, modes of operation and auxiliary systems. Once requirements are evaluated and problems are identified, the selection process for standby power supplies can become an organized and knowledgeable effort, free from delays and uncertainty.