Unconsciousness

The term chemical injury refers to the introduction of a caustic solution from the carbon dioxide scrubber of the UBA into the upper airway of a diver. 17-11.4.1 Causes of Chemical Injury. A caustic alkaline solution results when water leaking into the canister comes in contact with the carbon dioxide absorbent. When the diver is in a horizontal or head down position, this solution may travel through the inhalation hose and irritate or injure the upper airway. 17-11.4.2...

Diluent Bottle Primary Battery

MK 16 MOD 0 UBA Functional Block Diagram. 17-2.1 Recirculation and Carbon Dioxide Removal. The diver's breathing medium is recirculated in a closed-circuit UBA to remove carbon dioxide and permit reuse of the inert diluent and unused oxygen in the mixture. The basic recirculation system consists of a closed loop that incorporates inhalation and exhalation hoses and associated check valves, a mouthpiece or full face mask FFM , a carbon dioxide removal unit, and a diaphram assembly....