Editing Scuba set (section)

==Hazards and safety==
{{main|Diving safety|List of diving hazards and precautions}}
Scuba sets contain breathing gas at high pressure. The stored energy of the gas can do considerable damage if released in an uncontrolled manner. The highest risk is during charging of cylinders, but injuries have also occurred when cylinders have been stored in excessively hot environment, which can increase the gas pressure and may occasionally result in explosive rupture of damaged cylinders, by the use of incompatible cylinder valves, which can blow out under load, or by rupture of regulator hoses in contact with the user, as a pressure of more than {{convert|100|psi|bar}} can rupture the skin, and inject gas into the tissues, along with possible contaminants.<ref name="McCafferty 2013" /><ref name="SANS 10019:2008" /><ref name="Liebscher 2015" />

Scuba is [[safety-critical]] equipment, as some [[mode of failure|modes of failure]] can put the user at immediate risk of death by drowning, and a catastrophic failure of a [[scuba cylinder]] can instantly kill or severely injure persons in the vicinity. Open circuit scuba is considered highly reliable if correctly assembled, tested, filled, maintained and used, and the risk of failure is fairly low, but high enough that it should be considered in dive planning, and where appropriate, precautions should be taken to allow appropriate response in case of a failure. Mitigation options depend on the circumstances and mode of failure.