Document: NUREG-0800
Document ID: 3d8f7691-e488-4083-af2f-eef689c0ec98
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 COMPONENTS AND COMPONENT SUPPORTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0704/ML070430397.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
ironment, (3) applicable codes and standards, (4) materials of construction and standards for hydraulic fluids and lubricants, (5) environmental, structural, and performance design verification tests, including the required dynamic qualification, testing and extrapolation methods supporting qualification of large bore hydraulic snubbers with rated load capacities of 50 Kips or more as recommended in NUREG/CR-5416. (6) production unit functional verification tests and certification, (7) packaging, shipping, handling, and storage requirements, and (8) description of provisions for attachments and installation. In addition, the procurement program should include provisions for the snubber manufacturer to submit quality assurance and assembly quality control procedures for review and acceptance by the purchaser. (iv) Use of Additional Snubbers. Snubbers could in some instances be installed during or after plant construction. These snubbers may not have been included in the design analysis. This could occur as a result of unanticipated piping vibration, as discussed in SRP Section 3.9.2, or interference problems during construction. The effects of such snubbers should be fully evaluated and documented to demonstrate that normal plant operations and safety are not diminished. 3.9.3-9 Revision 2 - March 2007 Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. 10 CFR 50.55a requires, in part, that components and structures be designed, fabricated, constructed, tested, and inspected to quality standards commensurate with the importance of the safety function to be performed. Quality Group A, B, and C components must meet specific provisions of the Code. SRP Section 3.9.3 provides guidance for the staff's review of loading conditions, stresses, and stress limits for the subject components and structures. Loading conditions and stress limits