Document: NRC Regulatory Guide
Document ID: 28bfa464-f1cc-4f82-9b3c-4cfbe773e040
Document Type: regulatory_guide
Title: Fresh and Spent Fuel Pool Criticality Analysis + HISTORY - HISTORY 08/2020 – DG-1373 , Proposed Revision 0
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2018/ML20182A788.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.240
CFR Part: 
CFR Title: 

Content:
ons may become nonconservative, and additional uncertainties may need to be considered. Licensees or applicants are responsible for justifying use of the guidance in NEI 12-16, Revision 4, in any such applications. p. NEI 12-16, Revision 4, includes some general conclusions based on sensitivity studies performed to support the guidance. The NRC’s endorsement of NEI 12-16, Revision 4, should not be considered a determination that the conclusions are applicable for all licensees or applicants. Licensees or applicants should ensure that a conclusion is applicable to their circumstances before implementing the guidance associated with that conclusion. q. Appendix B to NEI 12-16, Revision 4, includes an example to supplement the guidance. The NRC’s endorsement of NEI 12-16, Revision 4, should not be considered a determination that the example provided in Appendix B is applicable for all licensees or applicants. Licensees or applicants should ensure that the example in Appendix B is applicable to their circumstances before implementing the guidance as described in the example. DG-1373, Page 10 D. IMPLEMENTATION The NRC staff may use this RG as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this RG to support NRC staff actions in a manner that would constitute backfitting, as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests,” (Ref. 22), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52. The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes forward fitting as that term is defined and described in Management Directive 8.4. If a licensee believes that the NRC is using this RG in a manner inconsistent with