Document: NUREG-0800
Document ID: d51db4b1-0b68-4e27-8107-a41ccdbd671a
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 COMPONENTS, COMPONENT SUPPORTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070337.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
ence problems 60 during construction. The effects of such installationsnubbers should be 61 3.9.3-9 DRAFT Rev. 2 - April 1996 fully evaluated and documented to demonstrate that normal plant operations and safety are not diminished. (6) Inspection and Testing Inservice inspection and testing are critical elements of operability assurance programs for mechanical components. The applicant should provide a discussion of accessibility provisions for maintenance, inservice inspection and testing, and possible repair or replacement of snubbers consistent with the requirements of the NRC Standard Technical Specifications. (7) Classification and Identification All safety-related components which utilize snubbers in their support systems should be identified and tabulated in the FSAR. The tabulation should include the following information: (i) identification of the systems and components in those systems which utilize snubbers, (ii) the number of snubbers utilized in each system and on components in that system, (iii) the type(s) of snubber (hydraulic or mechanical) and the corresponding supplier identified,62 (iv) specify whether the snubber was constructed to the rules of ASME Code Section III, Subsection NHF , 63 (v) state whether the snubber is used as a shock, vibration, or dual purpose snubber, and (vi) for snubbers identified as either dual purpose or vibration arrestor 64 type, indicate if both snubber and component were evaluated for fatigue strength. Technical Rationale65 The technical rationale for application of these acceptance criteria to reviewing ASME Class 1, 2, and 3 components component supports and core support structures is discussed in the following paragraphs:66 (1) Compliance with 10 CFR 50.55a requires 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 DRAFT Rev. 2 - April 1996 3.9.3-10