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:
m the design described in the FSAR. For a Pipe Break Hazards Protective Features Verification ITAAC, the Design Commitment should specify that safety-related SSCs are protected against the dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems. (Note: Protection against dynamic effects is not required for high-energy, ASME Code Section III Class 1 and 2 piping and interconnected equipment nozzles for which LBB criteria apply). The ITA should specify that an inspection and analysis will be performed of the as-built high- and moderate-energy piping systems and protective features for the safety-related SSCs. The Acceptance Criteria should specify that the safety-related SSCs are protected against the dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems as follows: (A) protective features are installed in accordance with the as-built Pipe Break Hazard Analysis Report, (B) the as-built safety-related SSCs are protected against or designed to withstand the dynamic effects associated with postulated failures in the as-built high- energy piping systems, and (C) the as-built safety-related SSCs are protected against or designed to withstand the environmental effects associated with postulated failures in the as-built high- and moderate-energy piping systems. Should the DC applicant not implement DAC, the first and third ITAAC discussed above may not be necessary, as the NRC staff will have had the opportunity to review the complete piping design at the DC stage. If DAC are not implemented, the staff should confirm that the second and fifth ITAAC provide adequate verification that the reviewed and approved design is appropriately implemented in the field. Selected material in DCD Tier 2, Chapter 3 provides design information and defines design processes that are acceptable for use in satisfying the piping DAC in Tier 1. 14.3.3−9 Draft Revision 1 –