G/TBT/N/USA/1170/Add.1  
 
7 January 2021 
(21-0238) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  7 January 2021 , is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title: Hazardous Materials: Miscellaneous Amendments Pertaining to DOT - Specification Cylinders 
(RRR)  
 
Reason for Addendum:  
[  ] Comment period changed - date:   
[  ] Notified measure adopted - date:  
[X] Notified measure published - date: 28 December 2020  
[X] Notified measure enters into force - date: 27 January 2021  
[X] Text of final measure available from1:  
https://w ww.govinfo.gov/content/pkg/FR -2020-12-28/html/2020 -26264.htm  
https://www.govinfo.gov/content/pkg/FR -2020-12-28/pdf/2020 -26264.pdf  
https://members.wto.org/crnattachments/2021/TBT/USA/final_measure/21_0262_00_
e.pdf 
[  ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[  ] Content or scope of notified measure changed  
New deadline for comments (i f applicable):   
[  ] Interpretive guidance issued and text available from1:  
[  ] Other:  
 
Description:   
AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), Department of 
Transportation (DOT)  
ACTION: Final rule  
SUMMARY: PHMSA is amending the Hazardous Materials Regulations (HMR) to revise certain 
requirements applicable to the manufacture, use, and requalification of DOT -specification cylinders. 
PHMSA is taking this action in response to petitions for rulemaking submitted by stakeholders and 
agency review of compressed gas cylinder regulations. Specifically, PHMSA is incorporating by 
reference or updating the references to several Compressed Gas Association publications, amending 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1170/Add.1  
 
- 2 - 
 
  the filling requirements for compr essed and liquefied gases, expanding the use of salvage cylinders, 
and revising and clarifying the manufacture and requalification requirements for cylinders.  
DATES:  
Effective date: 27 January 2021  
Incorporation by reference date: The incorporation by refe rence of certain publications listed in this 
rule is approved by the Director of the Federal Register as of 27 January 2021. The incorporation by 
reference of other publications listed in this rule were previously approved by the Director of the 
Federal Re gister as of 1 January 2004 (ASTM E 8 -99 and Welding Aluminum: Theory and Practice, 
Fourth Edition) and 11 May 2020 (Transport Canada TDG Regulations).  
Compliance Date: Unless otherwise specified, compliance with the amendments adopted in this final 
rule is required beginning 28 December 2021.  
This final rule and the notice of proposed rulemaking notified as G/TBT/N/USA/1170  are identified 
by Docket Number PHMSA -2011-0140. The Docket Folder is available on Regulations.gov  at 
https://www.regulations.gov/docket?D=PHMSA -2011-0140 and provides access to primary and 
supporting doc uments as well as comments 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 Docket  on Regulations.gov  if received within the comment period.  
__________