Document: NRC Regulatory Guide
Document ID: a9ef2370-dd48-458d-8383-4aa42db35627
Document Type: regulatory_guide
Title: Spent Fuel Storage Facility Design Basis + HISTORY - HISTORY 03/2026 – Periodic Review of Revision 2 – Reviewed with issues identified for future consideration 10/2015 – Periodic Review of Revision 2 – No Issues Identified 10/2006 – DG-1162 , Second Proposed Revision 2 12/1981 – Draft CE 913-5 , First Proposed Revision 2 Revision 1 was issued for public comment on 12/1975 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2605/ML26050A188.pdf
Revision Date: 2026-03
Chapter: 
Section ID: RG-1.13
CFR Part: 
CFR Title: 

Content:
for 72 hrs for spent fuel cooling. o Add bullet c (passive cooling) on page 8 of RG 1.13, section 6, to clarify and address passive cooling (no active makeup for 72 hrs) minimum drain down protection should be above minimum water needed for cooling or above 10 ft from the top of the fuel, whichever is the highest.  “If spent fuel pool is designed for passive cooling (no active makeup for 72 hrs) minimum drain down protection should be above minimum water needed for cooling or above 10 ft from the top of the fuel, whichever is the highest.” • On page 9 of RG 1.13, section 8 or On page 9 of RG 1.13, section 9. o Consider adding a note to reflect that for passive pools, the makeup water sources are not required to be seismic category I if the spent fuel pool has sufficient water inventory to allow for at least 7 days of cooling without makeup.  NOTE: This requirement has been relaxed for passive plants with large makeup water volumes or long-term cooling capabilities on a case-by-case basis in the past. Passive pool cooling systems with long capacity are not required to have redundant makeup sources, nor are they required to be seismic category I. • General comment on footnotes: o On page 1 of RG 1.13, the email Distribution@nrc.gov does not appear active valid anymore. o On page 11 of RG 1.13, the link in footnote 1 appears dead/broken (http://www.ans.org/store/vi-240124). Update to most current relevant format. Additionally, consider adding a note that the NRC endorses this reference. However, this reference to the standard has been withdrawn and has not been updated since December of 1993 by ANSI/ANS. o On page 11 of RG 1.13, the link in the footnotes 2 and 3 appears dead/broken (PDR@nrc.gov). Update to most current PDR.Resource@nrc.gov. 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? No