Design, manufacture and use of intermediate bulk containers for the transportation of dangerous goods, Classes 3, 4, 5, 6.1, 8, and 9 (CAN/CGSB-43.146)

Current status: CLOSED

Open on April 19, 2021 and will be closed on June 17, 2021.

The Canadian General Standards Board (CGSB) has released the draft of Safety Standard CAN/CGSB-43.146 for a 60-day consultation period. This standard is incorporated by reference within the Transportation of Dangerous Goods Regulations (TDG Regulations) and the new edition will come into force once published with a six-month phase-in (transitional) period.

Safety standard CAN/CGSB-43.146 sets out the requirements for designing, manufacturing and marking Intermediate Bulk Containers (IBCs) and for selecting and using IBCs for the transportation of dangerous goods of Classes 3, 4, 5, 6.1, 8, and 9. The Standard also outlines the requirements for registered IBC leak test and inspection facilities.

Join in: how to participate

Share your ideas

To obtain a copy of the draft safety standard, please contact the CGSB directly via Robert Long at Comments for improvement to the standard may also be sent to Robert Long using the following instructions.

All comments must be included in the comment form supplied by the CGSB and contain the following information:

  • CGSB Reference Number/Title of the Standard (e.g. CGSB-43.146 / “Design, manufacture and use of intermediate bulk containers for the transportation of dangerous goods, Classes 3, 4, 5, 6.1, 8 and 9”)
  • affected Clause No. / Subclause No. / Annex (e.g. 7.2)
  • affected Paragraph / Figure / Table / Note (e.g. Table 1)
  • comment (justification for change)
  • proposed change

Who is the focus of this consultation

All Canadians are invited to participate in the online consultations. Those with a particular interest may include:

  • manufacturers, distributors, and retailers of United Nations (UN) standardized IBCs
  • users of IBCs for the transport of dangerous goods in Class 3, 4, 5, 6.1, 8, and 9
  • registered IBC leak test and inspection facilities

Significant changes

  • Alignment with the 21st edition of the UN Recommendations on the Transport of Dangerous Goods - Model Regulations (Orange Book)
  • Updates related to the routine maintenance and repair of IBCs including:
    • Definition added for routine maintenance of IBCs (i.e. refurbishing)
    • Section added addressing damaged or defective IBCs and the routine maintenance and repair of damaged or defective IBCs (12.9) and requirement to successfully leak test a repaired IBC (C.6.4)
  • Updates to IBC design, testing and marking requirements, including:
    • Updates to compliance markings, including the requirement added to include the packing group marking (for which the design type has been tested) to the inner receptacle of composite IBCs (5.3.6a2)
    • Update to Table 3 representing minimal wall thickness of metal IBCs (6.16b2 – Table 3)
    • Guidance added with respect to amount of emergency venting capacity required for metal IBCs ( and Annex E)
    • Distinction added for modifications to an IBC for a manufacturer to submit revised description of the modified IBC to the Director for review (8.1)
    • Definition added for protected IBCs (e.g. double wall)
    • Requirement clarified for leakproofness test of double wall IBC – that air pressure shall be maintained in the primary containment when secondary containment is leak tested (7.6.4)
  • Updates to requirements on the use of plastic material, including:
    • Definition added for production plastic material (e.g. regrind)
    • Clarification of recycled plastics requirement for flexible, rigid plastic, and inner plastic receptacles of composite IBCs – recycled plastics specific properties to be documented under quality management system (6.2.4, 6.3.4, 6.4.5 – as per 3.26, 3.27)
    • Clarification to recycled plastic resin and representative testing required for recycled plastic resin (7.1.5)
    • Expansion of the quality management system requirements to capture resin specification test results of recycled plastic material properties (10.3.2c)
  • Clarifications to Annex C, and new requirement for owner of IBC to provide copy of notice to user to leak test and inspection facility upon request (C.2.1.3)

Related information

Contact us

Robert Long, Standards Specialist
Canadian General Standards Board (CGSB)
Tel: 343-551-1904
Fax: 819-956-5740