Cylinder Marking Maintenance
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Following requalification, each cylinder must be plainly and permanently marked as per the CSA B339-08 (Cylinder, Spheres, and Tubes for the Transportation of Dangerous Goods) Standard.
Clause 24.6.4.1 states that: "Except as provided in Clause 24.6.4.4, any marking becoming illegible shall be remarked on the container or reproduced on a metal plate permanently secured to the cylinder or any permanent part of the container, excluding the sidewall."
Clause 24.6.4.4 states that: "Where the space originally provided for marking requalification dates becomes filled, the expired requalification dates, except the last one, may be removed by peening, provided that:
Clause 24.6.4.1 states that: "Except as provided in Clause 24.6.4.4, any marking becoming illegible shall be remarked on the container or reproduced on a metal plate permanently secured to the cylinder or any permanent part of the container, excluding the sidewall."
Clause 24.6.4.4 states that: "Where the space originally provided for marking requalification dates becomes filled, the expired requalification dates, except the last one, may be removed by peening, provided that:
- Permission to do so has been obtained from the owner of the container,
- The design minimum wall thickness is maintained, and
- The original manufacturing test date is not removed.
