A major aspect of a Dive Bell Supervisors role is maintaining an appropriate ppO₂. The TDBS should be aware of the appropriate ppO₂ requirements in theirs sphere of operation.

There are numerous gasses used for breathing in diving. Normal air is a combination of Oxygen & Nitrogen (21% O2 / 79% N). There are various reasons why nitrogen is undesirable under a high partial pressure. It is for this reason that various alternative ‘inert’ gases are used as a  replacement, these include Helium and Hydrogen.

• IMCA D012 Stainless Steel in Oxygen Systems
• DVIS-3 – breathing gas management
• BS EN 12021
• IMCA D050-Minimum Quantities of Gas Required Offshore
• IMCA D022-ver2 2016 DIVE SUPERVISORS MANUAL – Chapter 9

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