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  2. Smoke hood - Wikipedia

    en.wikipedia.org/wiki/Smoke_hood

    When the oxygen supply ends, the hood will begin deflating and must be removed to avoid suffocation. These devices represent a subgroup of smoke hoods called positive-pressure respirators, which prevent the ingress of smoke or toxic gases by maintaining a higher air pressure inside the mask than outside. Consequently, any leak will cause fresh ...

  3. Escape breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Escape_breathing_apparatus

    They may use a breathing hood, facepiece or mouthpiece and nose-clip as the user respiratory interface. Atmosphere-supplying apparatus may be rebreathers with a chemical or compressed gas oxygen supply, positive pressure demand apparatus, or constant flow apparatus using high pressure compressed air. Contamination of the breathing gas may be ...

  4. Powered air-purifying respirator - Wikipedia

    en.wikipedia.org/wiki/Powered_air-purifying...

    For substances hazardous to the eyes, a respirator equipped with a full facepiece, helmet, or hood is recommended. PAPRs are not effective during firefighting, in an oxygen-deficient atmosphere, or in an unknown atmosphere; in these situations a self-contained breathing apparatus or supplied-air respirator is recommended instead. [5]

  5. Glossary of breathing apparatus terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_breathing...

    oxygen hood An oxygen hood is a plastic hood used for high flow oxygen therapy in infants. It surrounds the head and has an opening for the neck. A high flow rate is necessary to prevent carbon dioxide accumulation. Supplied gas must be warmed and humidified. [37] oxygen mask An oxygen mask is an

  6. Breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Breathing_apparatus

    Oxygen can be delivered to spontaneously breathing patients via nasal cannula, face mask, artificial airway, or by built-in breathing system demand mask or oxygen hood in a hyperbaric chamber. [49] [50] Delivery may be by continuous flow, by bag reservoir mask, on demand, or on pulse demand. [43]

  7. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness. [2]

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