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(click picture for more info) |
Oxygen deficiency occurs when an inert gas displaces
the Oxygen. The most commonly used inert gas is Nitrogen.
Unlike CO2, Nitrogen is not a toxic gas, however,
it will quickly displace Oxygen causing the atmosphere to be un-breathable.
Breathing air contains 21% Oxygen. If the Oxygen
decreases by as little as 1.5%, the human body will be affected.
Reduced Oxygen is also believed to have long-term
detrimental affects on the human body:
"Lack of oxygen clearly plays a major role in
causing cells to become cancerous."*
*Dr Harry Goldblatt, Journal of Experimental
Medicine
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Decreased ability to work strenuously.
May impair co-ordination and may induce symptoms in persons with
coronary, pulmonary, or circulatory problems. |
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Respiration deeper, increased
pulse rate and impaired co-ordination, perception and judgement. |
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Further increase in rate and
depth of respiration, further increase in pulse rate, performance
failure, giddiness, poor judgement and blue lips. |
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Mental failure, nausea, vomiting,
fainting, unconsciousness, ashen face, blue lips. |
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8 minutes may be fatal in 50-100%
of exposures; 6 minutes may be fatal in 25-50% of exposures; 4-5
minutes, recovery with treatment. |
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Coma in 40 seconds, convulsions,
respiration ceases, death. |
Analox have developed the Analox O2NE fixed Oxygen
Analyzer incorporating a sensor with a life of up to three years.
The Analox O2NE is available with up to three
repeater units allowing all access points into risk areas to be checked
before entry. When Oxygen levels drop to below 19.5%, a warning alarm
sounds and at 18% a second alarm warns of the immediate danger allowing
the area to be evacuated.
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Analox O2NE
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