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  2. Self-contained breathing apparatus - Wikipedia

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

    A "demand SCBA", according to the standard, is where "the facepiece is negative during inhalation". Whereas if the facepiece is positive during inhalation, it is a "pressure-demand SCBA". Regardless of the type of closed-circuit SCBA, the duration of closed-circuit SCBAs is, according to Z88.2, between "15 minutes to 4 hours". [12]

  3. Self-contained self-rescue device - Wikipedia

    en.wikipedia.org/wiki/Self-contained_self-rescue...

    Test bench for a miner's closed circuit self-rescuers. A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a type of closed-circuit SCBA [1] with a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide.

  4. Cascade filling system - Wikipedia

    en.wikipedia.org/wiki/Cascade_filling_system

    A cascade filling system is a high-pressure gas cylinder storage system that is used for the refilling of smaller compressed gas cylinders. [ 1 ] [ 2 ] In some applications, each of the large cylinders is filled by a compressor , otherwise they may be filled remotely and replaced when the pressure is too low for effective transfer.

  5. Light and air unit - Wikipedia

    en.wikipedia.org/wiki/Light_and_air_unit

    An air and light unit, also known as a breathing support unit or mobile air unit, is a specialized firefighting apparatus used by first responders to provide supplemental lighting and self-contained breathing apparatus cylinders and cylinder filling services at the scene of an emergency. [1]

  6. Postal codes in Canada - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Canada

    The introduction of the postal code began with a test in Ottawa on 1 April 1971. [19] Coding of Ottawa was followed by a provincial-level rollout of the system in Manitoba, and the system was gradually implemented in the rest of the country from 1972 to 1974, although the nationwide use of the code by the end of 1974 was only 38.2 per cent. [20]

  7. Escape breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Escape_breathing_apparatus

    Both systems were based on oxygen supply from a high-pressure cylinder with simultaneous absorption of carbon dioxide by an inserted cartridge filled with sodium hydroxide. 1916: The Draeger model DM 2 became standard equipment of the German Navy. 1926: Draeger displayed a rescue breathing apparatus that the wearer could swim with.

  8. Cascade Aerospace - Wikipedia

    en.wikipedia.org/wiki/Cascade_Aerospace

    Cascade Aerospace is headquartered in a 21 000 m 2 facility at the Abbotsford International Airport, in Abbotsford, British Columbia, Canada.The facility was built in 2000 and is designed and equipped to accommodate eight narrow-body aircraft.

  9. Breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Breathing_apparatus

    Equipment that supplies or recycles breathing gas other than ambient air in a space used by several people is usually referred to as being part of a life-support system, and a life-support system for one person may include breathing apparatus, when the breathing gas is specifically supplied to the user rather than to the enclosure in which the ...