G/TBT/N/USA/2288

8 June 2026

(26-4182)

Committee on Technical Barriers to Trade

Original: English

1.

Notifying Member: UNITED STATES OF AMERICA

If applicable, name of local government involved (Articles 3.2 and 7.2):

2.

Agency responsible:

Nuclear Regulatory Commission (NRC) [2321]

3.

Notified under Article 2.9.2 [X], 2.10.1 [ ], 5.6.2 [ ], 5.7.1 [ ], 3.2 [ ], 7.2 [ ], Other [X]: Regulatory Guide 1.277 describes an NRC-acceptable method for complying with NRC regulations by endorsing, with clarifications, ASME OM-2 (2024 Edition), "Component Testing Requirements at Nuclear Facilities," for testing and operational readiness of nuclear facility components.

4.

Products covered (HS codes or national tariff lines. ICS numbers may be provided in addition, where applicable): Nuclear facilities component testing; Test conditions and procedures in general (ICS code(s): 19.020); Nuclear power plants. Safety (ICS code(s): 27.120.20)

5.

Details of notified document(s) (title, number of pages and languages, means of access): Regulatory Guide: Acceptability of ASME OM-2 Code, Component Testing Requirements at Nuclear Facilities; (3 page(s), in English), (8 page(s), in English)

Link to notified document(s) and/or contact details for agency or authority which can provide copies upon request:

https://members.wto.org/crnattachments/2026/TBT/USA/26_03001_00_e.pdf

https://members.wto.org/crnattachments/2026/TBT/USA/26_03001_01_e.pdf

6.

Description of content: Direct final guide; issuance and post-promulgation comment period - 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.

7.

Objective and rationale, including the nature of urgent problems where applicable: Protection of human health or safety; Protection of the environment; Quality requirements

8.

Relevant documents:

91 Federal Register (FR) 33770, 4 June 2026:

https://www.govinfo.gov/content/pkg/FR-2026-06-04/html/2026-11191.htm

https://www.govinfo.gov/content/pkg/FR-2026-06-04/pdf/2026-11191.pdf

This direct final guide; issuance and post-promulgation comment period is identified by Docket Number NRC-2025-0677. The Docket Folder is available on Regulations.gov at https://www.regulations.gov/docket/NRC-2025-0677/document and provides access to primary documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.

9.

Proposed date of adoption: 4 June 2026

Proposed date of entry into force: 4 June 2026

10.

Provision of comments

Final date for comments: 6 July 2026

[ ] 60 days from notification

Post-promulgation comments must be received by 6 July 2026. Comments received after this datewill 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. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 6 July 2026. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with the NRC and will also be submitted to the Docket on Regulations.gov if received within the comment period.

Contact details of agency or authority designated to handle comments regarding the notification:

Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov