Document: NUREG-0800
Document ID: fb538e14-08a0-4d3f-a974-8170cbfe0b5b
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 COMPONENTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340603.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
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CFR Title: 

Content:
tem operating transients, the resulting combined stresses imposed on system components will not exceed allowable stress and strain limits for the materials of construction. Limiting the stresses under such loading combinations provides a conservative basis for the design of support components to withstand the most adverse combination of loading events without loss of structural integrity. 3.9.3-10 Rev. 1 - July 1981 Class CS component evaluation findings are covered in SRP Section 3.9.5 in connection with reactor internals. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding 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. Implementation schedules for conformance to parts of the method discussed herein are contained in the referenced regulatory guides and NUREGs. VI. REFERENCES 1. 10 CFR Part 50, §50.55a, "Codes and Standards." 2. 10 CFR Part 50, Appendix A, "General Design Criteria for Nuclear Power Plants," (a) General Design Criterion 1, "Quality Standards and Records," (b) General Design Criterion 2, "Design Bases for Protection Against Natural Phenomena," (c) General Design Criterion 4, "Environmental and Missile Design Bases," Cd) General Design Criterion 14, "Reactor Coolant Pressure Boundary," and (e) General Design Criterion 15, "Reactor Coolant System Design." 3. ASME Boiler and Pressure Vessel Code, Section III, Division 1, "Nuclear Power Plant Components," American Society of Mechanical Engineers. 4. Standard Review Plan Section 3.10, "Seismic and Dynamic Qualification of Mechanical and Electrical Equipment Important to Safety." 5. Appendix A to SRP Section 3.9.3, "Stress Limits for ASME Class 1, 2, and 3 Components and Component