Document: NUREG-0800
Document ID: c1650863-1de1-414d-af2a-3303c5a3d208
Document Type: srp
Title: FUNCTIONAL DESIGN, QUALIFICATION, AND INSERVICE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070720041.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.6
CFR Part: 
CFR Title: 

Content:
xplosively actuated valves should be fired and replaced at least every 2 years. (2) If a charge fails to fire, all charges with the same batch number should be removed and replaced with charges from a different batch. 4. Inservice Testing Program for Dynamic Restraints A. The IST program for dynamic restraints is acceptable if it meets the requirements of the ASME Code, Section XI, or the ASME OM Code as incorporated by reference in 10 CFR 50.55a. The IST program for dynamic restraints must comply with these provisions. B. In 10 CFR 50.55a(b)(3)(v), the regulations state that Subsection ISTD of the ASME OM Code, 1995 edition through the latest edition and addenda and incorporated by reference in 10 CFR 50.55a(b)(3), may be applied in place of the requirements for snubbers in the ASME Code, Section XI, IWF-5200(a) and (b) and IWF-5300(a) and (b), by making appropriate changes to technical specifications or licensee-controlled documents. The regulations also state that 3.9.6-15 Revision 3 - March 2007 preservice and inservice examinations must be performed using the VT-3 visual examination method prescribed in IWA-2213. C. The FSAR should identify and tabulate all safety-related components that use snubbers in their support systems. The tabulation should include the following information: i. Identification of the systems and components in those systems that use snubbers ii. The number of snubbers used in each system and on components in that system iii. The type(s) of snubber (hydraulic or mechanical) and the corresponding supplier iv. Specification whether the snubber was constructed in accordance with the ASME Code, Section III, Subsection NF v. Statement whether the snubber is used as a shock, vibration, or dual purpose snubber vi. For snubbers identified as either dual purpose or vibration arrestor type, an indication of whether both snubber and component were evaluated for fatigue strength, the evaluation is performed under SRP Section 3.9.3 Appendix A. D. The