Document: NRC Regulatory Guide
Document ID: b3f1c9ad-b3bf-44dd-b353-6c5da96d4b26
Document Type: regulatory_guide
Title: Criteria for The Protection of Safety-Related
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2415/ML24158A041.pdf
Revision Date: 2024-08
Chapter: 
Section ID: RG-1.238
CFR Part: 
CFR Title: 

Content:
RIS clarifies staff positions about the appropriate establishment of as-found and as-left acceptance tolerances. • RIS 2011-12, “Adequacy of Station Electric Distribution System Voltages,” dated December 29, 2011 (Ref. 14), provides information on degraded voltage relaying design calculations for the protection of electric power systems. • RG 1.6, “Independence Between Redundant Standby (Onsite) Power Sources and Between Their Distribution Systems (Safety Guide 6)” (Ref. 15), provides examples of acceptable independence between redundant standby power sources and redundant distribution systems, to comply with GDC 17. • RG 1.30, “Quality Assurance Requirements for the Installation, Inspection, and Testing of Instrumentation and Electric Equipment (Safety Guide 30)” (Ref. 16) provides quality assurance requirements for the installation, inspection, and testing of nuclear power plant instrumentation and electric equipment. DG-1354, Page 4 • RG 1.32, “Criteria for Power Systems for Nuclear Power Plants” (Ref. 17), provides guidance for the safety-related portions of systems and equipment in the alternating-current power systems, direct-current power systems, and instrumentation and control power systems. • RG 1.63, “Electric Penetration Assemblies in Containment Structures for Nuclear Power Plants” (Ref. 18), provides guidance on electrical protection of penetration assemblies. • RG 1.75, “Criteria for Independence of Electrical Safety Systems” (Ref. 19), provides guidance for the physical independence of the circuits and electrical equipment that comprise or are associated with safety systems. • RG 1.105, “Setpoints for Safety-Related Instrumentation” (Ref. 20) provides guidance establishing setpoints for safety-related instrumentation to protect nuclear power plant safety and analytical limits, and on maintaining instrument channels implementing these setpoints to ensure they are functioning as required, consistent with the