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    • Part 1 

      • Introduction

      • List of Acronyms 

      • The Competent Person

      • Responsibilities 

      • Planned Maintenance Systems (PMS) 

      • Key Features of this Document 

      • Completing the Document 

      • References 

    • Part 2 

      • Record of Inspections 

      • General Safety 

      • Dive Control 

      • Twinlock Air Chamber 

      • Diver Launch and Recovery System (LARS) 

      • Diving Basket 

      • Wet Bell 

      • Wet Bell Main Umbilical 

      • Diver Heating System 

      • Divers’ Umbilicals 

      • Divers’ Personal Equipment 

      • Compressors, Pumps, etc. 

      • High Pressure Air and Gas Storage

    Date: Reason: Revision:
    Date:October 2024 Reason:October 2024, Rev. 2.3 - Items added to Part 2 Sections 11 (5.10) and 12 (4.3) Revision:Rev. 2.3
    Date:July 2024 Reason:Lifting terminology updated per IMCA Information Note nr. 1665 Revision:Rev. 2.2
    Date:January 2024 Reason:Correction to Part 2 Detail Sheets item 1.17 of Section 5 (1.5 times replaced by 1.25 times), item 1.15 of Section 6 (1.5 times replaced by 1.25 times), and item 1.8 of Section 10 (removal of ‘in the last 12 months’) Revision:Rev. 2.1
    Date:August 2022 Reason:Updated to clarify any anomalies and bring the guidance into alignment with current industry good practice Revision:Rev. 2
    Date:January 2014 Reason:Updated to incorporate equipment improvements and changed operating practices since first publication Revision:Rev. 1
    Date:July 2024 Reason:Lifting terminology updated per IMCA Information Note nr. 1665 Revision:Rev. 2.2
    Date:January 2024 Reason:Correction to Part 2 Detail Sheets item 1.17 of Section 5 (1.5 times replaced by 1.25 times), item 1.15 of Section 6 (1.5 times replaced by 1.25 times), and item 1.8 of Section 10 (removal of ‘in the last 12 months’) Revision:Rev. 2.1
    Date:August 2022 Reason:Updated to clarify any anomalies and bring the guidance into alignment with current industry good practice Revision:Rev. 2
    Date:January 2014 Reason:Updated to incorporate equipment improvements and changed operating practices since first publication Revision:Rev. 1
    Date:February 2000 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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