Document: NRC Regulatory Guide
Document ID: 111d9c37-d539-4042-97a1-8ddc5dd093dc
Document Type: regulatory_guide
Title: Design Guidance for Radioactive Waste Management Systems, Structures, and Components Installed in Light-Water-Cooled Nuclear Power Plants + HISTORY –HISTORY 07/2020 – Periodic Review of Revision 2 – Reviewed with issues identified for future consideration 03/2018 – Periodic Review of Revision 2 – Revise 06/2015 – Periodic Review of Revision 2 – Revise 08/2000 – DG-1100 , Proposed Revision 2 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2019/ML20190A131.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.143
CFR Part: 
CFR Title: 

Content:
R 20, which was changed to 100 mrem in the 1990s. This change should be addressed in a future update to the RG. In addition, there are other items that should be addressed in the future revision to RG 1.143, including: (1) the RG should provide guidance on how to perform the unmitigated dose calculations or indicate what assumptions should be made in performing the calculation; and (2) the RG should clarify whether waste in storage should be considered in the classification of SSCs (e.g., it is unclear if waste in storage areas, including waste packaged for shipment in accordance with 10 CFR 71, “Packaging and Transport of Radioactive Material,” is within the scope of the RG and should be included within the SSC classification calculations). Thus far, these issues have resulted in challenges associated with the current use of RG 1.143 for staff and applicants, including the need for several rounds (in some cases) of requests for additional information (RAIs) for some applications. If not corrected in an update to the RG, the identified items could have schedule impacts for future reviews. Enclosure What is the impact on internal and external stakeholders of not updating the RG 2. for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? RG 1.143 focuses on the design, construction, installation, and testing of radwaste SSCs in light- water-cooled power reactors licensed under 10 CFR Part 50 and 10 CFR Part 52. The purpose of a future revision to the RG would be to update guidance for reactors that are not yet in the application phase, primarily to improve the licensing process and provide additional clarity for future applications. Operating reactors and reactors whose applications have already been submitted are not expected to revise their radwaste system designs, licenses, or applications based on a revision to the RG. There are not many new light water reactor applications expected in the near