3D Systems sPro, User Manual

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SLS p r o c e s s 3 3 S A F E T Y
u s e r ’ s g u i d e n i t r o g e n / o x y g e n s a f e t y
Oxygen Deprivation Effects and Symptoms a
OXYGEN CONTENT
(% BY VOLUME) EFFECTS AND SYMPTOMS AT ATMOSPHERIC PRESSURE
15 – 19 %
Decreased ability to work strenuously. May impair your coordination or may
induce early symptoms in persons with coronary, pulmonary, or circulatory
problems.
12 – 14 %
Increases respiration during exertion. Pulse rate goes up. May experience
impaired coordination, perception, and judgment.
10 – 12 %
Respiration continues to increase in rate and depth. Lips become blue. May lose
consciousness at this point.
8 – 10 %
Mental failure. Fainting and unconsciousness. Face becomes ashen, lips become
blue. Nausea and vomiting may occur.
6 – 8 %
100% fatal after 8 minutes of exposure.
50% fatal within 6 minutes.
Recovery with treatment within 4 to 5 minutes.
4 – 6 % Coma within 40 seconds; convulsions, respiration ceases, death occurs.
a. From Safety Bulletin SB-2 - 1983—”1983 by the Compressed Gas Association, Inc. 1235 Jefferson Davis Highway, Arlington,
VA 22202