Current Status: Open
Open on November 21, 2023 and will be closed on January 20, 2024.
The New editions of the following standards are being developed by the Canadian Standards Association's (CSA) Technical Committee on Cylinders, Spheres, and Tubes for the Transportation of Dangerous Goods and are expected to be published in 2024:
CSA B339 "Cylinders, spheres, and tubes for the transportation of dangerous goods"
CSA B340 "Selection and use of cylinders, spheres, tubes, and other containers for the transportation of dangerous goods, Class 2"
CSA B341 "UN pressure receptacles and multiple-element gas containers for the transport of dangerous goods"
CSA B342 "Selection and use of UN pressure receptacles and multiple-element gas containers for the transport of dangerous goods, Class 2"
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As part of the standards development process, CSA has posted the draft standards for public review and comment on its website:
The public review and comment period will remain open for a period of 60 days. Stakeholders must register with CSA's website in order to access the draft standards and all comments must be submitted in writing via CSA's website. The Technical Committee on Cylinders, Spheres, and Tubes for the Transportation of Dangerous Goods will take all comments into consideration in the development of the final standards.
Significant changes
The most notable proposed changes that appear in the draft standards are summarized below:
CSA B339
- Revised requirements for hydrostatic pressure tests at time of manufacture
- Revision to the new design criteria
- New welding requirements for specification TC-4EM cylinders
- Revised requirements for ultrasonically inspecting the starting stock of specification TC-3ALM cylinders
- New provisions for requalifying seamless cylinders and tubes by ultrasonic testing instead of a pressure test
- New provisions for the requalification of series-4 containers in noncorrosive gas service
- Clarified requirements for repairing and rebuilding cylinders
- New and revised provisions for applying requalification marks using a metal plate
- New requirements for maintaining requalification records
CSA B340
- Revised requirements for cylinders and tubes mounted on vehicles and trailers
- New requirements for cylinders and tubes longer than 2 m
- Revised filling requirements for carbon dioxide
- New provisions for filling specification TC-4LM containers with methane, refrigerated liquid and natural gas, refrigerated liquid with high methane content
- Revised provisions for vacuum-insulated closed containers for helium refrigerated liquid
CSA B341
- Alignment with the 20th, 21st and 22nd editions of the UN Model Regulations:
- New reference to ISO 10462:2013 "Gas cylinders — Acetylene cylinders — Periodic inspection and maintenance"
- New reference to ISO 10961:2019 "Gas Cylinders — Cylinder bundles — Design, manufacture, testing and inspection"
- New reference to ISO 11119-4:2016 "Gas cylinders — Refillable composite gas cylinders — Design, construction and testing — Part 4: Fully wrapped fibre reinforced composite gas cylinders up to 150 l with load-sharing welded metallic liners"
- New reference to ISO 16148:2016 "Gas cylinders - Refillable seamless steel gas cylinders and tubes – Acoustic emission examination (AT) and follow-up ultrasonic examination (UT) for periodic inspection and testing"
- New reference to ISO 18119:2018:2021 "Gas cylinders – Seamless steel and seamless aluminium-alloy gas cylinders and tubes – Periodic inspection and testing"
- New reference to ISO 20475:2018 "Gas cylinders — Cylinder bundles — Periodic inspection and testing"
- New reference to ISO 21172-1:2015:2018 "Gas cylinders — Welded steel pressure drums up to 3 000 litres capacity for the transport of gases — Design and construction — Part 1: Capacities up to 1 000 litres"
- New reference to ISO 22434:2006 "Transportable gas cylinders — Inspection and maintenance of cylinder valves"
- New reference to ISO 23088: 2020 "Gas cylinders – Periodic inspection and testing of welded steel pressure drums — Capacities up to 1 000 l"
- New provisions for UN pressure drums
- Revised shell requirements for UN cylinders for acetylene service
- New provisions for periodically inspecting and testing seamless pressure receptacles by acoustic emission examination and follow-up ultrasonic examination
- Revised requirements for the periodic inspection and test of composite UN cylinders and composite UN tubes
- New requirements for inspecting the neck mounting surfaces for UN refillable seamless steel tubes
- New requirements for design review agencies
CSA B342
- Alignment with the 20th, 21st and 22nd editions of the UN Model Regulations:
- New reference to ISO 10156:2017 "Gas cylinders — Gases and gas mixtures — Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets"
- New reference to ISO 11119-4:2016 "Gas cylinders — Refillable composite gas cylinders — Design, construction and testing — Part 4: Fully wrapped fibre reinforced composite gas cylinders up to 150 l with load-sharing welded metallic liners"
- New reference to ISO 14246:2014/A1:2017 "Gas cylinders — Cylinder valves — Manufacturing tests and examinations"
- New reference to ISO 17879:2017 "Gas cylinders — Self-closing cylinder valves — Specification and type testing"
- New provisions for UN pressure drums
- Updated valve protection requirements
- New requirements for mixtures of fluorine
- Updated fire test requirements for pressure-relief device system
- Revised requirements for cylinders and tubes mounted on vehicles and trailers
- New requirements for cylinders and tubes longer than 2 m
Contact at Canadian Standards Association (CSA):
Vaishnavi Somasundaram
Project Manager, Worker and Public Safety
CSA Group
178 Rexdale Blvd.
Toronto, ON, M9W 1R3
vaishnavi.somasundaram@csagroup.org
www.csagroup.org