G/TBT/N/USA/1780  
29 September 2021  
(21-7287) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Nuclear Regulatory Commission (NRC) [1809]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [   ], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other  [X]:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  High 
temperature reactors; Environmental protection (ICS 13.020), Nuclear energy 
engineering (ICS 27.120)  
5. Title, number  of pages and language(s) of the notified document:  Acceptability of 
ASME Code Section III, Division 5, High Temperature Reactors (2 page(s), in English)  
6. Description of content:  Draft regulatory guide; draft NUREG; request for comment - 
The U.S. Nuclea r Regulatory Commission (NRC) is issuing for public comment a draft 
regulatory guide (DG), DG -1380 (proposed Revision 2 to Regulatory Guide [RG] 1.87), 
"Acceptability of ASME Code Section III, Division 5, 'High Temperature Reactors'" and 
accompanying draft  NUREG -2245, "Technical Review of the 2017 Edition of ASME Section 
III, Division 5, 'High Temperature Reactors,'" that documents the NRC staff's review of 
the 2017 Edition of ASME Section III, Division 5, certain portions of the 2019 Edition, and 
associate d Code Cases N -861 and N -862. This DG describes an approach that is 
acceptable to the staff of the NRC to meet regulatory requirements for mechanical/ 
structural integrity of components that operate in elevated temperature environments 
and that are subject  to time -dependent material properties and failure modes. It 
endorses, with conditions, the American Society of Mechanical Engineers (ASME) Boiler 
and Pressure Vessel Code (ASME Code) Section III, "Rules for Construction of Nuclear 
Facility Components," Di vision 5, "High Temperature Reactors." The draft NUREG provides 
the technical basis for DG -1380.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of human health or safety; Protection of the environment  
8. Relevant documents:  86 Federal Register (FR) 46888, 20 August 2021:  
https://www.govinfo.gov/content/pkg/FR -2021-08-20/html/2021 -17916.htm  
https://www.govinfo.gov/content/pkg/FR -2021-08-20/pdf/2021 -17916.pdf  
This draft regulatory guide; draft NUREG; request for comment is identified by Docket 
Number NRC -2021-0117.  The Docket Folder is available on Regulations.gov at G/TBT/N/USA/1780  
 
- 2 - 
 
  https://www.regulations.gov/docket/NRC -2021-0117/document  and provides access to 
primary and supporting documents as well as com ments received. Documents are also 
accessible from Regulations.gov  by searching the Docket Number. WTO Members and 
their stakeholders are asked to submit comments to the USA TBT Enquiry Point . 
Comments received by the USA TBT Enquiry Point from WTO Members and their 
stakeholders will be shared with the regulator and will also be submitted to the Docke t 
on Regulations.gov if received within the comment period.  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  19 October 2021  
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://members.wto.org/crnattachments/2021/TBT/USA/21_6223_ 00_e.pdf