{"abstract":"The U.S. Nuclear Regulatory Commission (NRC) is issuing Regulatory Guide (RG) 1.220, Revision 0, \"Acceptability of ASME OM-2 Code, Component Testing Requirements at Nuclear Facilities.\" This new RG endorses, with a regulatory position, the American Society of Mechanical Engineers (ASME) Operation and Maintenance OM-2 Code, Component Testing Requirements at Nuclear Facilities, 2024 Edition, and describes an approach that is acceptable to the NRC staff for the development and implementation of an Inservice Testing (IST) Program for all types of nuclear facilities. This RG is effective on the date of Federal Register Notice publication, with a 30-day post-promulgation comment period.","action":"Direct final guide; issuance and post-promulgation comment period.","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/2026/06/04/2026-11191.html","cfr_references":[],"citation":"91 FR 33770","comment_url":null,"comments_close_on":"2026-07-06","correction_of":null,"corrections":[],"dates":"RG 1.220, Revision 0, takes effect on June 4, 2026. Post- promulgation comments must be received by July 6, 2026. 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. Although a time limit is given, comments and suggestions in connection with items for inclusion in guides currently being developed or improvements in all published guides are encouraged at any time.","disposition_notes":null,"docket_ids":["NRC-2025-0677"],"dockets":[{"supporting_documents":[],"agency_name":"NRC","documents":[{"comment_count":1,"comment_start_date":"2026-06-04","updated_at":"2026-07-07T01:56:55.620-04:00","comment_url":"https://www.regulations.gov/commenton/NRC-2025-0677-0001","allow_late_comments":false,"id":"NRC-2025-0677-0001","comment_end_date":"2026-07-07","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":0,"id":"NRC-2025-0677","title":"Acceptability of ASME OM-2 Code, Component Testing Requirements at Non-Water-Cooled Nuclear Facilities"}],"document_number":"2026-11191","effective_on":"2026-06-04","end_page":33772,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/06/04/2026-11191.xml","html_url":"https://www.federalregister.gov/documents/2026/06/04/2026-11191/regulatory-guide-acceptability-of-asme-om-2-code-component-testing-requirements-at-nuclear","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-11191?publication_date=2026-06-04","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-06-04/2026-11191/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":213,"last_updated":"2026-09-20 16:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-06-04/pdf/2026-11191.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-11191.pdf?1780490720","publication_date":"2026-06-04","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/06/04/2026-11191.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[],"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-2025-0677","supporting_documents_count":0,"docket_id":"NRC-2025-0677","document_id":"NRC-2025-0677-0001","regulation_id_number":null,"title":"Acceptability of ASME OM-2 Code, Component Testing Requirements at Non-Water-Cooled Nuclear Facilities","checked_regulationsdotgov_at":"2026-07-08T08:55:03Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":33770,"subtype":null,"title":"Regulatory Guide: Acceptability of ASME OM-2 Code, Component Testing Requirements at Nuclear Facilities","toc_doc":"Acceptability of ASME OM2 Code, Component Testing Requirements at Nuclear Facilities","toc_subject":"Regulatory Guide","topics":[],"type":"Notice","volume":91}