Document: NUREG-0800
Document ID: 5c84a1c2-9405-4849-8c5f-415a0bb66a22
Document Type: srp
Title: in connection with reactor internals.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070337.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.5
CFR Part: 
CFR Title: 

Content:
owing subjects regarding ASME Class 1, 2, and 3 components and component supports, of safety-related systems and core support structures in the following areas:130 (1) Consideration of design loadings and limits. (2) Consideration of service loading combinations resulting from postulated events and the designation of acceptable service limits. (3) Consideration of piping functional capability and operability of active pumps and valves under service loading combinations resulting from postulated events. (4) Applicability of the appendix to components, component support structures, and core support structures and procedures for compliance. 1.0 ASME CLASS 1, 2, AND 3 COMPONENTS, AND COMPONENT SUPPORTS, OF SAFETY-RELATED SYSTEMS AND CLASS CS CORE SUPPORT 131 132 STRUCTURES 1.1 Design Considerations and Design Loadings and Design Limits133 ASME Code Class 1, 2, and 3 components, component supports, and class CS134 core support structures shall be designed to satisfy the appropriate subsections of the Code in all respects as required in 10 CFR 50.55a, including limitations on 135 pressure, and including the requirements of this appendix. Component supports 136 that are intended to restrain either force and displacement or anchor movement137 shall be designed to maintain deformations within appropriate limits as specified in the component support Design Specifications. Design loadings shall be established in the Design Specification. The design limits of the appropriate subsection of the Code shall not be exceeded for the design loadings specified. DRAFT Rev. 2 - April 1996 3.9.3-22 To avoid fatigue failure during the life of the plant, unisolable sections of piping connected to the reactor coolant system that are subject to stresses from temperature stratification or temperature oscillations as well as other typical piping stresses, including piping that may be rendered susceptible to these conditions through leaking valves, should be identified and designed to withstand