[en] Proposed criteria for the application of stored-program, digital computers in commercial nuclear power plants are presented in summary form. The emphasis is on making recommendations for the design of computer systems and on recommending a method for the regulatory review of computer system designs. More-restrictive requirements are made for protection systems than control systems or other plant computer systems. In making these recommendations, the study team reviewed current regulations, past NRC reviews of computer systems, the work done by other government agencies, and the work done by many other countries. The results provide a classification of systems, a recommended design method, and a specification of design issues to be resolved during the design and development of digital computer systems