Document: NUREG-0800
Document ID: 85a8d3b1-a30b-4282-8217-8bc68986145a
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 PIPING SYSTEMS, PIPING COMPONENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1404/ML14042A513.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.12
CFR Part: 
CFR Title: 

Content:
tions, modeling techniques, operational and performance testing and maintenance standards for snubbers used as a piping support. The objective of the review is to ensure that the SAR contains adequate discussions and commitments to address the criteria specified in SRP 3.9.3, Subsection II.3.B. 3.12-21 Revision 1 – April 2014 vii. Pipe Support Stiffness Follow the review procedures provided in SRP Section 3.9.3, Subsection III.3. viii. Seismic Self-Weight Excitation Review the procedure used to evaluate the mass of the pipe supports and miscellaneous steel as a self-weight excitation loading on the steel and the structures supporting the steel to verify that these loads have been addressed. ix. Design of Supplementary Steel Review the procedure used for the design of supplementary structural steel to verify the design is in accordance with the provisions of ASME Code, Section III, Subsection NF. x. Consideration of Friction Forces Review the procedure used in the analysis of sliding type supports to consider friction loads induced by the pipe on the supports. Review the coefficients of friction used in the evaluation to ensure that these are reasonable values commonly used in the nuclear industry. xi. Pipe Support Gaps and Clearances Review the procedure used to assess the design for the minimum gap (total of opposing sides) between the pipe and the support to verify that the temperature and pressure of the pipe have been adequately addressed. xii. Instrumentation Line Support Criteria Follow the review procedures provided in SRP Section 3.9.3, Subsection III.3. xiii. Pipe Deflection Limits Review the procedure to determine allowable deflections of the piping at support locations for static and dynamic loading to verify that the applicant has an adequate technical basis for the criteria. xiv. Clamp-induced Local Pipe Stress Evaluation Review the procedure to ensure that interface design procedures are used to control the flow of design information from the support