self-contained underwater breathing apparatus

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A device consisting of one or more tanks of compressed breathable gases—‘air’—in optimised ratios, a regulator that can be adjusted to regulate the flow of air, and a meter to indicate the amount of ‘air’ remaining in the tanks
Risks Barotrauma, lung overinflation, decompression illness, death (±150/year, US)

self-contained underwater breathing apparatus

,

scuba

A device used by swimmers and divers that enables them to breathe underwater. The mask worn is watertight and is connected to a tank of compressed air.
See: bends
References in periodicals archive ?
The RES is a very compact, horizontally-waist mounted SCUBA set combined with an integrated PFA (Personal Flotation Aid) that also acts as a diver buoyancy compensator.
Tenders are invited for Supply of 18nos of scuba set with 2 spare cylinders
The RES is a very compact, horizontally-waist mounted SCUBA set combined with an integrated PFD (Personal Flotation Aid) that also acts as a diver buoyancy compensator.
Rawalpindi -- District Coordination Officer (DCO) Rawalpindi Sajid Zafar on Thursday inspected flood rescue equipment and gave orders for emergency procurement of Rubber Boats 10 Nos and SCUBA sets 6 Nos.