Document: NRC Regulatory Guide
Document ID: bcbe26a0-004f-4616-b7f4-b32b2bfe4909
Document Type: regulatory_guide
Title: Setpoints for Safety-Related Instrumentation (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2005/ML20055G823.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.105
CFR Part: 
CFR Title: 

Content:
................. 6 2.2.1 Technical Specification Allowable Values ......................................................................... 6 2.2.2 Adequacy of the Allowance for Channel Uncertainties between the Limiting Trip Setpoint and the Analytical Limit ................................................................ 6 2.2.3 Evaluation of the Allowance for Drift ................................................................................ 7 2.2.4 Definition of Terms ............................................................................................................ 7 2.2.5 Illustrative Figure Depicting Relationship of Terms .......................................................... 7 2.2.6 Graded Approach Based on Safety Significance ................................................................ 8 2.2.7 Measurement and Test Equipment Uncertainties ............................................................... 8 2.2.8 ISA Recommended Practice ISA-RP67.04.02 .................................................................... 8 3. Harmonization with International Standards .......................................................................................... 8 4. Documents Discussed in Staff Regulatory Guidance ............................................................................. 8 C. STAFF REGULATORY GUIDANCE ................................................................................................. 10 D. IMPLEMENTATION ........................................................................................................................... 11 REFERENCES ........................................................................................................................................... 12 DG-1363, Page 5 B. DISCUSSION 1. Reason for Revision This revision of RG 1.105 describes a method that is acceptable to the staff for use in complying with the agency’s regulations to ensure that: a) setpoints for safety-related