Document: NRC Regulatory Guide
Document ID: 7500cda6-62ab-4b82-85bd-1dbf504d108d
Document Type: regulatory_guide
Title: Flood Protection for Nuclear Power Plants (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2106/ML21068A405.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.102
CFR Part: 
CFR Title: 

Content:
minimize risk owing to unreducible uncertainties in hazard forecasting and mobilization of temporary or active flood protection features. However, the appropriate role of temporary and/or active flood protection as defense-in-depth should be recognized. 2. What is the impact on internal and external stakeholders of not updating the RG for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? The agency anticipates license applications for small modular reactors, and several new and advanced reactor designs, including microreactors over the next decade. The current guidance implicitly focuses on large light-water power reactors, and is not well- suited for licensing and oversight of the anticipated new license applications. 3. What is an estimate of the level of effort needed to address identified issues in terms of full-time equivalent (FTE) and contractor resources? Revision of the guide is estimated to require 0.25 NRC FTEs. 4. Based on the answers to the questions above, what is the staff action for this guide (Reviewed with no issues identified, Reviewed with issues identified for future consideration, Revise, or Withdraw)? Revise. 5. Provide a conceptual plan and timeframe to address the issues identified during the review. The staff plans to develop a draft guide by end of the fourth quarter of FY 2021, and issue it for public comment in the second quarter of FY 2022. NOTE: This review was conducted in March 2021 and reflects the staff’s plans as of that date. These plans are tentative and subject to change.