Document: NUREG-0800
Document ID: b4039863-44f0-46d9-979e-27ea871ff5d6
Document Type: srp
Title: -19
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1404/ML14043A231.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
ity, and allowable design and service stress limits for Code Class 1, 2, and 3 components and component supports, and core support structures. The Code provides five categories of limits applicable to design and service loadings (Design, Level A, Level B, Level C, and Level D). The Code rules provide for structural integrity of the pressure retaining boundary of a component and its supports, but specifically exclude the subject of component operational readiness and do not directly address functional capability. The types of loadings to be taken into account in designing a component are specified in the Code, but rules specifying how the loadings (which result from postulated events and plant and system operating conditions) are to be combined, and what stress level is appropriate for use with a particular loading combination, are not specified in the Code. It is the responsibility of the designer to include all this information in the Code required Design Specification of each component and support. 3. POSITION The Code provides design stress limits and four sets of service stress limits for all classes of components, component supports, and core support structures. The availability of such design and service stress limits within the Code requires that the primary reviewer should review and determine maximum acceptable design and service stress limits which may be used with specified loads, or combinations thereof, for components and component supports (refer to definition in Table II) and core support structures.