{"abstract":"The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the NAC International, Inc. MAGNASTOR[supreg] Storage System listing within the \"List of approved spent fuel storage casks\" to include Amendment No. 9 to Certificate of Compliance No. 1031. Amendment No. 9 revises the certificate of compliance to add a new concrete storage overpack; four new heat load zone patterns and their associated decay heats that are specific to Babcock and Wilcox 15x15 fuel assemblies; a new Babcock & Wilcox 15x15 hybrid fuel assembly type (BW15H5); and a new maximum enrichment for the BW15H2 hybrid fuel assembly, including a new minimum soluble boron concentration during loading and unloading operations and neutron absorber areal density. In addition, Amendment No. 9 makes non- technical changes to reorganize Appendix B of the technical specifications. These changes are discussed in more detail in the \"Discussion of Changes\" section of this direct final rule.","action":"Direct final rule.","agencies":[{"raw_name":"NUCLEAR REGULATORY COMMISSION","name":"Nuclear Regulatory Commission","id":383,"url":"https://www.federalregister.gov/agencies/nuclear-regulatory-commission","json_url":"https://www.federalregister.gov/api/v1/agencies/383","parent_id":null,"slug":"nuclear-regulatory-commission"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2020/09/22/2020-20666.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"72","title":10}],"citation":"85 FR 59395","comment_url":null,"comments_close_on":"2020-10-22","correction_of":null,"corrections":[],"dates":"This direct final rule is effective December 7, 2020, unless significant adverse comments are received by October 22, 2020. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of this issue of the Federal Register.","disposition_notes":null,"docket_ids":["NRC-2020-0166"],"dockets":[{"supporting_documents":[{"title":"Preliminary Safety Evaluation Report","document_id":"NRC-2020-0166-0006"},{"title":"Proposed Approved Contents for the MAGNASTOR System, Appendix B","document_id":"NRC-2020-0166-0005"},{"title":"Technical Specifications and Design Features for the MAGNASTOR System,  Appendix A","document_id":"NRC-2020-0166-0004"},{"title":"Certificate of Compliance No. 1031, Amendment No. 9","document_id":"NRC-2020-0166-0003"}],"agency_name":"NRC","documents":[{"comment_count":1,"comment_start_date":"2020-09-22","updated_at":"2025-05-21T01:02:47.613-04:00","comment_url":"https://www.regulations.gov/commenton/NRC-2020-0166-0001","allow_late_comments":false,"id":"NRC-2020-0166-0001","comment_end_date":"2020-10-23","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":4,"id":"NRC-2020-0166","title":"List of Approved Spent Fuel Storage Casks:  NAC International, Inc. MAGNASTOR Storage System, Certificate of Compliance No. 1031, Amendment No. 9"}],"document_number":"2020-20666","effective_on":"2020-12-07","end_page":59400,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2020/09/22/2020-20666.xml","html_url":"https://www.federalregister.gov/documents/2020/09/22/2020-20666/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastor-storage-system-certificate","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2020-20666?publication_date=2020-09-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2020-09-22/2020-20666/mods.xml","not_received_for_publication":null,"page_length":6,"page_views":{"count":206,"last_updated":"2026-10-24 18:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2020-09-22/pdf/2020-20666.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2020-20666.pdf?1600692316","publication_date":"2020-09-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2020/09/22/2020-20666.txt","regulation_id_number_info":{"3150-AK50":{"issue":"202010","html_url":"https://www.federalregister.gov/regulations/3150-AK50/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastor-storage-system-certificate","title":"List of Approved Spent Fuel Storage Casks: NAC International, Inc. MAGNASTOR Storage System, Certificate of Compliance No. 1031, Amendment No. 9 [NRC-2020-0166]","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202010&RIN=3150-AK50&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["3150-AK50"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Preliminary Safety Evaluation Report","document_id":"NRC-2020-0166-0006"},{"title":"Proposed Approved Contents for the MAGNASTOR System, Appendix B","document_id":"NRC-2020-0166-0005"},{"title":"Technical Specifications and Design Features for the MAGNASTOR System,  Appendix A","document_id":"NRC-2020-0166-0004"},{"title":"Certificate of Compliance No. 1031, Amendment No. 9","document_id":"NRC-2020-0166-0003"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/3150-AK50/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastor-storage-system-certificate","title":"List of Approved Spent Fuel Storage Casks: NAC International, Inc. MAGNASTOR Storage System, Certificate of Compliance No. 1031, Amendment No. 9 [NRC-2020-0166]"},"comments_count":1,"agency_id":"NRC","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=NRC-2020-0166","supporting_documents_count":4,"docket_id":"NRC-2020-0166","document_id":"NRC-2020-0166-0001","regulation_id_number":"3150-AK50","title":"List of Approved Spent Fuel Storage Casks:  NAC International, Inc. MAGNASTOR Storage System, Certificate of Compliance No. 1031, Amendment No. 9","checked_regulationsdotgov_at":"2025-05-21T04:55:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":59395,"subtype":null,"title":"List of Approved Spent Fuel Storage Casks: NAC International, Inc. MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment No. 9","toc_doc":"NAC International, Inc. MAGNASTOR Storage System, Certificate of Compliance No. 1031, Amendment No. 9","toc_subject":"List of Approved Spent Fuel Storage Casks:\n","topics":["Administrative practice and procedure","Hazardous waste","Indians","Intergovernmental relations","Nuclear energy","Penalties","Radiation protection","Reporting and recordkeeping requirements","Security measures","Whistleblowing"],"type":"Rule","volume":85}