Document: NUREG-0800
Document ID: a7fafe76-5570-446b-96dd-3e53ec9bccb3
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340663.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4
CFR Part: 
CFR Title: 

Content:
ion of the reactivity control system causes violation of the fuel design limits. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regard- ing the NRC staff's plans for using this SRP section. Except in those cases in which the applicant proposes an acceptable alternative method for complying with specified portions of the Commission's regulations, the method described herein will be used by the staff in its evaluation of conformance with Commission regulations. VI. REFERENCES 1. 10 CFR Part 50, Appendix A, General Design Criterion 10, "Reactor Design"; Criterion 11, "Reactor Inherent Protection"; Criterion 12, "Suppression of Reactor Power Oscillations"; Criterion 13, "Instrumentation and Control"; Criterion 20, "Protection System Functions"; Criterion 25, "Protection System Requirements for Reactivity Control Malfunctions"; Criterion 26, "Reactivity Control System Redundancy and Capability"; Criterion 27, "Combined Reactivity Control Systems Capability"; and Criterion 28, "Reactivity Limits." 2. Branch Technical Position CPB 4.3-1, "Westinghouse Constant Axial Offset Control," July 1975, attached to SRP Section 4.3. 3. R. 0. Meyer, "The Analysis of Fuel Densification," NUREG-0085, July 1976. 4. M. K. Drake, ed., "Data Formats and Procedures for the ENDF Neutron Cross Section Library," BNL-50274 (ENDF-102), National Neutron Cross Section Center, Brookhaven National Laboratory (1970). 4.3-14 Rev. 2 - July 1981 BRANCH TECHNICAL POSITION CPB 4.3-1 WESTINGHOUSE CONSTANT AXIAL OFFSET CONTROL (CAOC) A. BACKGROUND In connection with the staff review of WCAP-8185 (17x17), we reviewed and accepted a scheme developed by Westinghouse for operating reactors that assures that throughout the core cycle including during the most limiting power maneuvers the total peaking factor, F , will not exceed the value consistent with the LOCA or other limiting acci~ent analysis. This operating scheme, called constant axial offset control (CAOC),