Find out more about the types of IMCA documents and our definitions

    • Background 

    • Scope 

    • Application 

    • Safety Considerations 

    • Personnel 

    • Equipment 

    • Decompression Tables 

    • References

    Date: Reason: Revision:
    Date:May 2024 Reason:Document assurance check – preface, layout updated; no change to content Revision:Rev. 0.2
    Date:June 2023 Reason:Minor updates made during review Revision:Rev. 0.1
    Date:January 2017 Reason:Change to advice on the selection of gas mixes for emergency breathing cylinders carried in a wet bell or basket (section 4.2). Other minor updates made during review. Revision:Rev.
    Date:March 2012 Reason:Initial publication Revision:Rev.