Document: NRC Regulatory Guide
Document ID: f92b5e1e-0bb1-4850-acb7-d4534cc77577
Document Type: regulatory_guide
Title: Wide-Range Spent Fuel Pool Level Instrumentation + HISTORY - HISTORY 11/2015 – DG-1317 , Proposed Revision 0
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1424/ML14245A454.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.227
CFR Part: 
CFR Title: 

Content:
eismic motion. Consequently, seismic design and installation adequacy cannot be reasonably demonstrated solely through operational history of performance of components when subjected to vibration. The effects of low frequency, high acceleration need to be included in any demonstration of seismic design adequacy. This clause is not appropriate without stating that such a vibration design envelope shall be inclusive of the effects of seismic motion imparted to the components proposed at the location of the proposed installation. The third bullet under the section “Seismic” lists four methods of demonstrating reliability. Staff Position: The adequacy of seismic design and installation should be demonstrated based on the guidance in Sections 7, 8, 9, and 10 of IEEE Standard 344-2004 or a substantially similar industrial standard. The use of IEEE Standard 344-2004 is endorsed by Rev. 3 of RG 1.100, “Seismic Qualification of Electric and Mechanical Equipment for Nuclear Power Plants,” (Ref. 19). The NRC staff has no additional exceptions or clarifications for other sections of NEI 12-02, Rev. 1. D. IMPLEMENTATION. The purpose of this section is to provide information on how applicants and licensees1 may use this guide and information regarding the NRC’s plans for using this RG. In addition, it describes how the NRC staff complies with the Backfit Rule found in 10 CFR 50.109(a)(1) or any applicable finality provisions in 10 CFR Part 52. Use by Applicants and Licensees Applicants and licensees may voluntarily2 use the guidance in this document to demonstrate compliance with the underlying NRC regulations. Methods or solutions that differ from those described in this RG may be deemed acceptable if they provide sufficient basis and information for the NRC staff to verify that the proposed alternative demonstrates compliance with the appropriate NRC regulations. Current licensees may continue to use guidance the NRC found acceptable for complying with the identified