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    • Background 

    • Aims 

    • Application 

    • Standards for Diving Gas Supply Companies and their Facilities 

    • Processes to be Followed by Gas Suppliers when Filling, Mixing and Analysing 

    • Diving Gas Composition Standards and Tolerances 

    • Port Call Management Plans for Gas Transfer 

    • Processes to be Followed when Receiving and Accepting Breathing Gases for Diving 

    • Identification and Certification Requirements for Gas Cylinders and Quads 

    • Inert Gas Policy 

    • Movement of Gas Storage Containers 

    • Safe Handling of Oxygen 

    • Reporting of Gas Supply Incidents 

    • References 

    • Appendix 1 – Example of a Gas Supply Company’s Equipment Quality Control Checklist 

    • Appendix 2 – Example of a Cylinder Integrity Check Record 

    • Appendix 3 – Example of Gas Analysis Report for Helium and Oxygen Mixtures

    Date: Reason: Revision:
    Date:April 2024 Reason:QA check – Preface, references and layout updated; no change to content Revision:Rev. 0.1
    Date:January 2023 Reason:Initial publication Revision:Rev.

IMCA documents

Find out more about the different types of document.

Our Guidance documents are categorised as follows:

  • Code of Practice – Its uniform application is recognised as essential for the safe and efficient conduct of marine contracting projects. IMCA expects the highest level of compliance with this category from its Members.

  • Recommended Practice – Its uniform application is recognised as necessary for the safe and efficient conduct of marine contracting projects. IMCA expects a high level of compliance with this category from its Members.

  • Informative Guidance – Its application is recognised as useful for the safe and efficient conduct of marine contracting projects. IMCA expects its Members to take appropriate account when planning, managing, and conducting their marine contracting projects.

Our Information Notes covering safety, technical, regulatory, commercial and various other issues relevant to its Members. Non-members can explore a small number of individual articles deemed of broader industry interest.

Anyone working for a Member company has unlimited access to our entire library of documents. This degree of transparency and ready-availability ensures that contractors, suppliers, and operators always have access to them and are aligned on the latest industry good practice.

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