Topic summary
Gas reclaim system
Extracted from the Wikipedia article Saturation diving system.
Gas reclaim systems
A helium reclaim system (or push-pull system) may be used to recover helium based breathing gas after use by the divers as this is more economical than losing it to the environment in open circuit systems. The recovered gas is passed through a scrubber system to remove carbon dioxide, filtered to remove odours and other impurities, and pressurised into storage containers, where it may be mixed with oxygen to the required composition. Alternatively the recycled gas can be more directly recirculated to the divers.