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2. Self-contained self-rescue device - Wikipedia

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

   A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide . Self-rescuers are intended for use in environments such as coal mines where there is a risk of fire ...

3. Self-contained breathing apparatus - Wikipedia

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

   In an atmosphere that may be oxygen-deficient, an air supply is carried on the back. A self-contained breathing apparatus ( SCBA) is a device worn to provide an autonomous supply of breathable gas in an atmosphere that is immediately dangerous to life or health. They are typically used in firefighting and industry.

4. Escape breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Escape_breathing_apparatus

   Escape breathing apparatus may be air-purifying escape respirators or self-contained atmosphere-supplying escape respirators. 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 ...

5. Astronaut propulsion unit - Wikipedia

   en.wikipedia.org/wiki/Astronaut_Propulsion_Unit

   The Simplified Aid For EVA Rescue (SAFER) is a smaller backpack propulsion system intended as a safety device during space walks. It contains 1.4 kg of gaseous nitrogen, which provides much less delta-v capability than the MMU, roughly 10 feet per second (3 meters per second). However SAFER is less complex, less expensive and simpler to use ...

6. Simplified Aid For EVA Rescue - Wikipedia

   en.wikipedia.org/wiki/Simplified_Aid_for_EVA_Rescue

   SAFER. Simplified Aid For EVA Rescue ( SAFER) is a small, self-contained, propulsive backpack system ( jet pack) worn during spacewalks, to be used in case of emergency only. If an untethered astronaut were to lose physical contact with the vessel, it would provide free-flying mobility to return to it. It is worn on spacewalks outside the ...

7. Scott Air-Pak SCBA - Wikipedia

   en.wikipedia.org/wiki/Scott_Air-Pak_SCBA

   The Scott Air-Pak SCBA is an open-circuit, self-contained breathing apparatus designed to meet the National Fire Protection Association (NFPA) Standard 1981. All components, excluding the air cylinder, were designed and manufactured by Scott Safety. Formerly a division of Tyco International, Ltd., Scott Safety was sold to 3M in 2017.