FIELD: fire-fighting, particularly to extinguish fires in decompression pressure chambers of ships and boats and in deep-ocean diving systems.
SUBSTANCE: method involves creating anoxic gas medium by compression with compressed helium at maximal possible rate to obtain pressure necessary to produce oxygen-nitrogen-helium medium having oxygen concentration of not more than 10-12%; holding above medium to combat fire; decompressing divers in special mode, which provides gas equilibrium in diver's organisms, when current summary human tissues saturation with nitrogen and helium does not exceed outer pressure value, and sufficient oxygenation.
EFFECT: increased efficiency of fire extinguishment due to provision of oxygen concentration, which does not sustain combustion, increased safety of divers due to necessary partial nitrogen pressure provision and due to correct decompression mode usage.
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