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:
minimized, with exceptions granted on a case- by-case basis. Instead, the applicable requirements, including specific design provisions, from codes, standards, or reports should be directly stated in the CDM. This ensures that each Tier 1 requirement is clear, and remains unaffected if the referenced code, standard, or report changes. This practice will also simplify a rulemaking certifying the standard design, should the NRC grant the certification. The specific Code edition, volume, version, date, etc., should be specified in Tier 2 of the DCD rather than in the DCD Tier 1. This provides for specific requirements that are acceptable, yet allows the Code to be updated via the change process in the rule certifying the design. It is important to note that, under the provisions of 10 CFR 52.63, “Finality of standard design certifications,” and the rule certifying the design, changes to the codes and standards in 10 CFR 50.55a would not necessarily be requirements for the certified design. 2. Verification of Components and Systems. In addition to the generic approach to piping design in Tier 1, the verification of piping and component classification, fabrication, dynamic and seismic qualification, and selected testing and performance requirements is also addressed by specific ITAAC in the individual Tier 1 systems. The staff should evaluate the adequacy of specific proposed ITAAC in view of the applicable considerations discussed below: 14.3.3−10 Draft Revision 1 – September 2018 A. Piping and Component Safety Classification. 10 CFR Part 50, Appendix A, General Design Criterion (GDC) 1, “Quality Standards and Records,” requires that safety-related SSCs be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions performed. Nuclear power plant components classified as part of the reactor coolant pressure boundary (hereafter referred to as Quality Group A), Quality Group B, and Quality Group C are