Search results
Results from the WOW.Com Content Network
Inhalation of liquid (water), usually causing laryngospasm and suffocation caused by water entering the lungs and preventing the absorption of oxygen leading to cerebral hypoxia. [3] Avoid out of air emergencies underwater. Use of a redundant emergency breathing gas supply [5] Provide appropriate buoyancy.
The weight of the water column above the diver causes an increase in pressure in proportion to depth, in the same way that the weight of the column of atmospheric air above the surface causes a pressure of 101.3 kPa (14.7 pounds-force per square inch) at sea level. This variation of pressure with depth will cause compressible materials and gas ...
Diving safety is the aspect of underwater diving operations and activities concerned with the safety of the participants. The safety of underwater diving depends on four factors: the environment, the equipment, behaviour of the individual diver and performance of the dive team.
Narcosis results from breathing gases under elevated pressure, and may be classified by the principal gas involved. The noble gases, except helium and probably neon, [2] as well as nitrogen, oxygen and hydrogen cause a decrement in mental function, but their effect on psychomotor function (processes affecting the coordination of sensory or cognitive processes and motor activity) varies widely.
Several factors influence the diver, including immersion, exposure to the water, the limitations of breath-hold endurance, variations in ambient pressure, the effects of breathing gases at raised ambient pressure, effects caused by the use of breathing apparatus, and sensory impairment. All of these may affect diver performance and safety. [1]
Precautionary statements form part of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). [1] They are intended to form a set of standardized phrases giving advice about the correct handling of chemical substances and mixtures, which can be translated into different languages.
The variation of depth with elapsed time during a dive, often depicted as a graph. dive site. Main article: Dive site. The place at which the dive occurs. Also, more broadly, a place at which diving occurs, has occurred, or is planned to occur, and the general locality, with extent depending on context.
Water safety refers to the procedures, precautions and policies associated with safety in, on, and around bodies of water, where there is a risk of injury or drowning. It has applications in several occupations, sports and recreational activities.