Document: NUREG-0800
Document ID: 770455aa-5593-426f-9936-878a3882a677
Document Type: srp
Title: Table II defines all the terms used in this appendix.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340603.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2
CFR Part: 
CFR Title: 

Content:
ss 1 linear and Class 1 plate and shell component support structures are to be supplemented by this appendix. 3.9.3-16 Rev. 1 - April 1984 TABLE I Allowable Service Stress Limits for Specified Service Loading Combinations for ASME Class 1 Components and Class CS Support Structures System Service Service Stress Operating Conditions Loading Combination1,4 Limit Plant Event2 1. Normal Operation 2. Plant/System Operating Transients (SOT) + OBE 3. DBPB 4. MS/FWPB 5. DBPB or MS/FWPB + SSE Normal Upset Emergency Faulted Faulted Sustained Loads Sustained Loads + SOT + OBE A B3 u0 to CAi I za ~1 -A -AD Sustained Loads + DBPB C3 Sustained Loads + MS/FWPB D3 Sustained Loads + DBPB or D3 MS/FWPB + SSE 6. LOCA Faulted Sustained Loads + LOCA D3 7. LOCA + SSE Faulted Sustained Loads + LOCA + SSE D3 NOTE: 1The appropriate method of combination is subject to review and evaluation. Refer to Section 1.2. 2Refer to Table II for definition of terms. 3In addition to meeting the specified service stress limits for given load combinations, operability and functional capability must also be demonstrated as discussed in Subsection 2.0 of this appendix and in SRP Section 3.10. 4These events must be considered in the pipe stress analysis and pipe support design process when specified in the ASME Code-required Design Specification. The Design Specification shall define the load and specify the applicable Code Service Stress Limit. For clarification, it should be noted that the potential for water hammer and water (steam) hammer occurrence should also be given proper consideration in the development of Design Specifications. TABLE II DEFINITION OF TERMS Active Pumps and Valves - A pump or valve which must perform a mechanical motion in order to shut down the plant or mitigate the consequences of a postulated event. Safety and relief valves are specifically included. Component and Support Functional Capability - Ability of a component, including its supports, to deliver rated flow and retain