文档介绍：IMPLEMENTATION Except in those cases in which a licensee proposes or has previously established an acceptable alternative method plying with specified portions of the NRC ’s regulations, the NRC staff will use the methods described in this Interim Staff Guidance (ISG) to evaluate pliance with NRC requirements as presented in submittals in connection with applications for standard plant design certifications bined licenses. This ISG provides acceptable methods for addressing HICRc in digital I&C system designs. This guidance is consistent with mission policy on digital I&C systems and isnot intended tobea substitute for NRC regulations, but to clarify how a licensee or applicant may satisfy those regulations. This ISG also clarifies the criteria the staff will use to evaluate whether an applicant/licensee digital system design is consistent with HICRc guidelines. The staff intends to continue interacting with stakeholders to refine digital I&C ISGs and to update associate guidance and generate new guidance where appropriate. SCOPE This Interim Staff Guidance addresses the design and review of digital Implemention 除了许可证持有者提出或先前已确立符合 NRC 规定可行的替代方案外, NRC 的工作人员将使用本 ISG 所描述的方法,结合 NRC 的要求并同时结合标准电厂设计认证和许可证来评估申请方案。本 ISG 提供了在数字 I&C系统设计中,可接受的解决 HICRc 问题的方法。本指导原则与目前现行的委员会关于数字 I& C 系统的政策一致,不是 NRC 法规的替代品,但要阐明持牌人或申请人怎样满足这些法规。 ISG 也阐明了制定标准方和监管方使用 ISG 评估申请人/ 持牌人提出的数字系统设计方案是否符合 HICRc 的指导方针。工作人员会保持与从业者合作,完善数字 I& C ISGs 和适当的更新相关指导和制定新的指导方案。范围 ISG 用于指导核电厂安全相关的数字化系统的设计和审查。这些准 systems proposed for safety-related service in nuclear power plants. These guidelines address only selected digital aspects of such systems. Such systems are also subject to requirements germane to safety-related systems, such as requirements for separation, independence, electrical isolation, seismic qualification, quality requirements, etc. cited in the General Design Criteria of Appendix A to Part 50of Title 10of the Code of Federal Regulations. Additional guidance applicable to such systems is also provided in v