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The OSHA definition is arguably broad enough to include oxygen-deficient circumstances in the absence of "airborne contaminants", as well as many other chemical, thermal, or pneumatic hazards to life or health (e.g., pure helium, super-cooled or super-heated air, hyperbaric or hypo-baric or submerged chambers, etc.).
The specific guidelines for prevention of asphyxiation due to displacement of oxygen by asphyxiant gases is covered under CGA's pamphlet SB-2, Oxygen-Deficient Atmospheres. [15] Specific guidelines for use of gases other than air in back-up respirators is covered in pamphlet SB-28, Safety of Instrument Air Systems Backed Up by Gases Other Than Air.
In an atmosphere that may be oxygen-deficient, or toxic, an air supply can be carried on the back. A breathing apparatus or breathing set is equipment which allows a person to breathe in a hostile environment where breathing would otherwise be impossible, difficult, harmful, or hazardous, or assists a person to breathe.
A supplied-air respirator (SAR). The air hose leads to a stationary supply outside the hazardous area. Usually, a small backup air tank (yellow), for emergency use if the air-supply line is damaged. [ 1] A supplied-air respirator (SAR) or air-line respirator is a breathing apparatus used in places where the ambient air may not be safe to breathe.
Composition of normal air vs. hypoxic air. Hypoxic air technology for fire prevention, also known as oxygen reduction system ( ORS ), is an active fire protection technique based on a permanent reduction of the oxygen concentration in the protected rooms. Unlike traditional fire suppression systems that usually extinguish fire after it is ...
Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen ( O. 2) at increased partial pressures. Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and eyes. Historically, the central nervous system condition was called the Paul Bert effect ...
Frequency. 9.8 million unintentional worldwide (2015) [ 1] Deaths. 35,600 worldwide (2015) [ 2] Asphyxia or asphyxiation is a condition of deficient supply of oxygen to the body which arises from abnormal breathing. [ 3] [ 4] Asphyxia causes generalized hypoxia, which affects all the tissues and organs, some more rapidly than others.
Respirator. For the mechanical device used to assist breathing, see Ventilator. For the mask worn during surgery, see Respirator ยง Surgical N95, and Surgical mask. A half-face elastomeric air-purifying respirator. This kind of respirator is reusable, with the filters being replaced periodically. A respirator is a device designed to protect the ...