CSA Group CSA B339:25 National Standard of Canada Cylinders, spheres, and tubes for the transportation of dangerous goods

Preface

This is the eighth edition of CSA B339, Cylinders, spheres, and tubes for the transportation of dangerous goods. It supersedes the previous editions published in 2018, 2014, 2008, 2002, 1996, 1988, and 1983.

This Standard is one of a series of Standards adopted by reference by the Transportation of Dangerous

Goods Regulations. Because the Regulations might adopt this Standard with certain exceptions or

additional requirements, they should be consulted to determine where they differ from the

requirements of this Standard.

Notwithstanding the provisions of this Standard, compliance with the provisions of the Transportation of Dangerous Goods Act and the regulations thereto might call for additional requirements due to particular characteristics or properties of individual dangerous goods. Any requirements of the

Transportation of Dangerous Goods Regulations regarding the handling, the offering for transport, and the transportation of dangerous goods in cylinders, spheres, and tubes are to be fully complied with.

The Technical Committee on Cylinders, Spheres, and Tubes for the Transportation of Dangerous Goods, which is responsible for this Standard, has maintained close links with Transport Canada to ensure compatibility of the new edition of this Standard with the amended Transportation of Dangerous Goods

Regulations. The Committee has also reviewed and made extensive use of Compressed Gas Association publications and the U.S. Code of Federal Regulations.

The following are the major changes to this edition:

1. a) revised requirements for hydrostatic pressure tests at time of manufacture;
2. b) revisions to the new design criteria;
3. c) new welding requirements for Specification TC-4EM cylinders;
4. d) revised requirements for ultrasonically inspecting the starting stock of Specification TC-3ALM cylinders;
5. e) new provisions for requalifying seamless cylinders and tubes by ultrasonic testing instead of a pressure test;
6. f) new provisions for the requalification of Series-4 containers in non-corrosive gas service;
7. g) clarified requirements for repairing and rebuilding cylinders;
8. h) new and revised provisions for applying requalification marks using a metal plate; and
9. i) new requirements for maintaining requalification records.

This Standard was prepared by the Technical Committee on Cylinders, Spheres, and Tubes for the Transportation of Dangerous Goods, under the jurisdiction of the Strategic Steering Committee on Public Safety, and has been formally approved by the Technical Committee.

This Standard has been developed in compliance with Standards Council of Canada requirements for

National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Notes:

1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3) This Standard was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.

4) To submit a request for interpretation of this Standard, please send the following information to [email protected] and include “Request for interpretation” in the subject line:

1. a) define the problem, making reference to the specific clause, and, where appropriate, include a graphical image;
2. b) provide an explanation of circumstances surrounding the actual field condition; and
3. c) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.

Committee interpretations are processed in accordance with CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csagroup.org.

5) This Standard is subject to review within five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to [email protected] and include “Proposal for change” in the subject line:

1. a) Standard designation (number);
2. b) relevant clause, table, and/or figure number;
3. c) wording of the proposed change; and
4. d) rationale for the change.

1 Scope

1.1 General

This Standard covers requirements for the manufacturing, inspection, testing, marking, requalification, reheat treatment, repair, and rebuilding of cylinders, spheres, and tubes (collectively referred to as “containers”) for the transportation of dangerous goods. In addition, this Standard includes the requirements for the qualification of new designs and registration requirements.

1.2 Designations and descriptions of containers

1.2.1 Subjects addressed

This Standard covers the general requirements for containers (see Clause 4) and specific requirements as specifications (see Clauses 5 to 23) for the manufacture of each type of container.

The general requirements are applicable to all containers unless otherwise stated or unless they are not relevant to the individual specifications.

1.2.2 Container specifications covered in this Standard

The specification designations and descriptions of containers covered in this Standard are listed in Tables 1 to 6.

Note: It should be noted that compliance with the provisions of the Transportation of Dangerous Goods Act and the regulations thereto might call for additional requirements due to particular characteristics or properties of individual dangerous goods.

1.3 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.4 Units of measurement

The values given in SI units are the units of record for the purposes of this Standard except for the cylinder marking requirements where the service pressure and the test pressure, where applicable (e.g., Specification TC-39M), are expressed in bar.

For consistency in the design and test requirements of all containers, MPa and kPa have been retained as units to express service pressure. Considering the use of the bar unit by ISO to mark service and test pressures, the Technical Committee decided to use the same unit for marking service pressure. The capital letter “M” is added to each specification designation to formally identify the container specification is metricated.