美国核监管会标准.doc

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 is not intended to be a 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 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 50 of Title 10 of the Code of Federal Regulations. Additional guidance applicable to such systems is also provided in various other NRC and industry documents.
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