Document: NUREG-0800
Document ID: 62485d6f-6b2a-4360-acb5-f874d2adc406
Document Type: srp
Title: PIPING SYSTEMS AND COMPONENTS - INSPECTIONS, TESTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1808/ML18088A069.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.3
CFR Part: 
CFR Title: 

Content:
normal operating conditions, system operating transients, postulated pipe breaks, and seismic events. The material in Tier 1 should also address the consequential effects of pipe ruptures such as jet impingement, potential missile generation, and pressure and temperature effects. The scope of the piping to be verified by the piping ITAAC should include all ASME BPV Code Class 1, 2, or 3 piping systems as well as non-ASME BPV Code Class piping for pipe break hazards analysis. Tier 1 includes ASME BPV Code Class piping systems because ASME BPV Code, Section III, is referenced in 10 CFR 50.55a, “Codes and standards.” Nuclear power plant components classified as Quality Groups A, B, and C are required by 10 CFR 50.55a to meet the requirements for ASME BPV Code Class 1, 2, or 3, respectively. In each system description, a functional drawing should identify the boundaries of the ASME BPV Code classification for the piping systems. 10 CFR Part 50, Appendix A, General Design Criteria (GDC) 1, “Quality standards and records” requires that systems, structures, and components important to safety, including piping and associated supports, be designed, fabricated, erected, and tested to quality standards commensurate with the importance of their safety function. An acceptable approach to Tier 1 information for piping design is to specify distinct ITAAC that ensure the design process for piping systems occurs as described in the design description. This design process can be verified through inspection of an ASME BPV Code, Section III, design output document, such as an ASME Code Section III Design Report. The ASME BPV Code Section III design output document will provide assurance that the requirements of ASME BPV Code, Section III for design have been met and that the design complies with the Design Specification. The particular design output document should be specified in the ITAAC. For example, the Design Commitment for such an ITAAC should specify that the ASME Code