Document: NUREG-0800
Document ID: d51db4b1-0b68-4e27-8107-a41ccdbd671a
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 COMPONENTS, COMPONENT SUPPORTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070337.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
AND CORE SUPPORT STRUCTURES REVIEW RESPONSIBILITIES Primary - Mechanical Engineering Branch (EMEB ) 1 Secondary - None I. AREAS OF REVIEW The EMEB reviews the information presented in the applicant's safety analysis report (SAR) 2 concerning the structural integrity of pressure-retaining components, their supports, and core support structures which are designed in accordance with the rules of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III, Division 1 (hereinafter "the Code") (Reference 3) and General Design Criteria 1, 2, 4, 14, and 15 3 (Reference 2).4 The staff reviews covers the following specific areas: 5 1. Loading Combinations, System Operating Transients, and Stress Limits The design and service loading combinations (e.g., design and service loads, including system operating transients, in combination with loads calculated to result from postulated seismic and other events) specified for Code constructed items designated as Code Class 1, 2, 3 (including Class 1, 2, and 3 component support structures) and CS6 core support structures are reviewed to determine that appropriate design and service limits have been designated for all loading combinations. This reviewThe reviewer7 ascertains that the design and service stress limits and deformation criteria comply with DRAFT Rev. 2 - April 1996 3.9.3-2 the applicable limits specified in the Code and Appendix A to this Standard Review Plan (SRP) section. Service stress limits which allow inelastic deformation of Code Class 1, 8 2, and 3 components, component supports, and Class CS core support structures are 9 evaluated as are the justifications for the proposed design procedures. Piping which is "field run" should be included. Internal parts of components, such as valve discs and seats and pump shafting, subjected to dynamic loading during operation of the component should be included. 2. Design and Installation of Pressure Relief Devices The design and installation