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Diving safety – Risk management of underwater diving activities; Pre-dive checks – Checks done prior to entering the water for a dive; Recreational diver training – Training process for people who do not dive at work; Scuba skills – The skills required to dive safely using a self-contained underwater breathing apparatus.
Diving safety – Risk management of underwater diving activities; Hazard – Situation or object that can cause harm; Human factors in diving safety – The influence of physical, cognitive and behavioral characteristics of divers on safety; Risk assessment – Estimation of risk associated with exposure to a given set of hazards
Some are trivially easy for a skilled diver. They include regulator recovery, clearing a flooded mask or helmet, bailout to emergency gas supply, emergency swimming ascent (for scuba), bell abandonment, shedding of weights (scuba), breathing off the pneumofathometer hose (SSDE), and switching over to onboard gas (bell diving).
The usual meaning of diving helmet is a piece of diving equipment that encases the user's head and delivers breathing gas to the diver, but the term "diving helmet", or "cave diving helmet" may also refer to a safety helmet like a climbing helmet or caving helmet that covers the top and back of the head, but is not sealed. These may be worn ...
Loss of breathing gas is a safety-critical malfunction, and must be manageable by the diver without outside assistance over the short term. [1] The diver generally carries an emergency scuba gas supply connected to the helmet or bandmask at the bailout valve, or to the full-face mask via a bailout block.
The scuba mask (half-mask) is equalised during descent by periodically exhaling through the nose. During ascent it will automatically equalise by leaking excess air round the edges. A helmet or full face mask will automatically equalise as any pressure differential will either vent through the exhaust valve or open the demand valve and release ...
A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]
The procedures vary depending on whether the diver is using scuba or surface supplied equipment. Scuba divers control their own descent and ascent rate, while surface supplied divers may control their own ascents and descents, or be lowered and lifted by the surface team, either by their umbilical, or on a diving stage, or in a diving bell.
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