Document: NUREG-0800
Document ID: 62e8a2f9-b438-4ced-8623-3e61ee216490
Document Type: srp
Title: series.22
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070293.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8
CFR Part: 
CFR Title: 

Content:
ization of degradation and failure of support fasteners or embedments (e.g., resulting from fatigue, corrosion, inadequate installation, vibration, water hammer, or earthquake) should be emphasized in maintenance practices.31 3.13-17 DRAFT Rev. 0 - April 1996 Technical Rationale The technical rationale for application of these acceptance criteria to review of threaded fasteners and associated design, installation, quality assurance, and maintenance program provisions is discussed in the following paragraphs:32 1. The requirements of 10 CFR 50.55a that are applicable to SSCs containing threaded fasteners are described in subsection I.B.1. This SRP section describes the staff's review of threaded fasteners in the RCS and the RCPB, attached systems, component supports, other seismic Category I SSCs, and SSCs whose failure could affect seismic Category I SSCs (SC I-related). The codes and standards cited comply with the provisions of 10 CFR 50.55a and are commensurate with the safety functions to be performed. Meeting the requirements of 10 CFR 50.55a provides assurance that threaded fasteners in SSCs that are important to safety will continue to perform their intended functions so that SSCs containing these fasteners are capable of performing their intended safety functions.33 2. The requirements of 10 CFR 50.60 that are applicable to systems and components containing threaded fasteners are described in subsection I.B.2. This SRP section describes the staff's review of threaded fasteners in the RCS and RCPB. The requirements of 10 CFR 50.60 contain specific references to Appendix G to 10 CFR Part 50 regarding fracture toughness for components, including threaded fasteners. Meeting the requirements of 10 CFR 50.60 and Appendix G to 10 CFR Part 50 provides assurance that fasteners in RCS and RCPB will continue to perform their intended functions so that SSCs containing these fasteners are capable of performing their intended safety functions.34 3. The requirements of GDC