SCUBA - Self-Contained Underwater Breathing Apparatus 21
SCUBA - Self-Contained Underwater Breathing Apparatus 21 : Effects of Breathing High Pressure Gas: (5) Hazards Inherent in the Diver: Pre-existing physiological and psychological conditions in the diver: See also: Pre-existing physiological and psychological conditions in the diver. Diver behaviour and competence: See also: Diver behaviour and competence. Inadequate learning or practice of critical safety skills may result in the inability to deal with minor incidents, which consequently may develop into major incidents. Overconfidence can result in diving in conditions beyond the diver's competence, with high risk of accident due to inability to deal with known environmental hazards. Inadequate strength or fitness for the conditions can result in inability to compensate for difficult conditions even though the diver may be well versed at the required skills, and could lead to over-exertion, overtiredness, stress injuries or exhaustion. Peer pressure can cause a diver to dive in conditions where he may be unable to deal with reasonably predictable incidents. Diving with an incompetent buddy can result in injury or death while attempting to deal with a problem caused by the buddy. Overweighting can cause difficulty in neutralising and controlling buoyancy, and this can lead to uncontrolled descent, inability to establish neutral buoyancy, inefficient swimming, high gas consumption, poor trim, kicking up silt, difficulty in ascent and inability to control depth accurately for decompression. Underweighting can cause difficulty in neutralising and controlling buoyancy, and consequent inability to achieve neutral buoyancy, particularly at decompression stops. Diving under the influence of drugs or alcohol, or with a hangover may result in inappropriate or delayed response to contingencies, reduced ability to deal timeously with problems, leading to greater risk of developing into an accident, increased risk of hypothermia and increased risk of decompression sickness. Use of inappropriate equipment and/or configuration can lead to a whole range of complications, depending on the details
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