Document: NUREG-0800
Document ID: ec05e779-56d2-4f40-be68-9fceb91114ab
Document Type: srp
Title: THREADED FASTENERS1
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070293.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.13
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Materials and Chemical Engineering Branch (EMCB) Secondary - None I. AREAS OF REVIEW A. The purpose of the staff's review in this area is intended to ensure that threaded fasteners are designed, procured, installed, inspected, tested, and maintained so that safety-related components and structures containing the fasteners will perform their intended functions in a manner commensurate with the importance of the safety function to be performed.2 B. The review covers the following general requirements described in 10 CFR Part 50. These general requirements provide the sources of the acceptance criteria related to threaded fasteners within the staff's area of review. 1. 10 CFR 50.55a, "Codes and Standards," requires (in part) that: a. Structures, systems, and components (SSCs) must be designed, fabricated, erected, constructed, tested, and inspected to quality standards commensurate with the importance of the safety function to be performed; b. Components of the reactor coolant pressure boundary (RCPB) must meet the requirements for Class 1 components in Section III of the American Society of Mechanical Engineers (ASME) Code; DRAFT Rev. 0 - April 1996 3.13-2 c. Quality Group B components covered in Regulatory Guide 1.26 must meet the requirements for Class 2 components in Section III of the ASME Code; d. Quality Group C components covered in Regulatory Guide 1.26 must meet the requirements for Class 3 components in Section III of the ASME Code; and e. ASME Code Class 1, 2, and 3 components must be designed and be provided with access to facilitate the performance of inservice inspection and testing.3 2. 10 CFR 50.60, "Acceptance Criteria For Fracture Prevention Measures For Lightwater Nuclear Power Reactors For Normal Operation," requires that the requirements of Appendix G to 10 CFR Part 50, "Fracture Toughness Requirements," be met unless an exemption is granted based upon proposed alternatives. Appendix G applies to bolting and