The original scope will be clarified as follows: The standard serves to amplify criteria in IEEE Std 603 for computers used as components of safety systems in nuclear power generating stations. Note: The existing scope unnecessarily includes a definition of computers. The purpose is to establish minimum functional and design requirements for computers used as components of safety systems. The purpose of this revision is to improve the usability of this standard and to address industry comments. The proposed project will clarify existing commercial grade item dedication requirements and guidelines; make the existing verification and validation requirements consistent with the requirements in IEEE Std 1012; add requirements for self-diagnostic and fault detection; and, overall, improve the usability of this standard and its consistency with IEEE Std 603. Revision Standard - Superseded. Additional computer specific requirements to supplement the criteria and requirements of IEEE Std 603-1998 are specified. Within the context of this standard, the term computer is a system that includes computer hardware, software, firmware, and interfaces. The criteria contained herein, in conjunction with criteria in IEEE Std 603-1998, establish minimum functional and design requirements for computers used as components of a safety system.