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3.8.1 Health Risks
A drop of the oxygen content of respiratory air below 17 Vol%, or an increase above
21 Vol% can lead to health risks to humans.
When pure oxygen is inhaled for a prolonged period of time, lung damage and functional
disturbances of the autonomic nervous system may occur. Increased oxygen concentrations
are imperceptible for people.
Inhaling pure oxygen for even a short time will lead to symptoms of poisoning such as
dizziness, nausea, vision disorders, defective hearing and disequilibrium,
cramps/convulsions, unconsciousness and even death.
Liquid oxygen may cause serious frostbite.
An increased risk of fire exists when clothing is contaminated with oxygen or oil and grease.
Minor difficulty in breathing following acute inhalation of high oxygen concentrations will
usually disappear after exposure to fresh air.
3.8.2 Precautions
Ventilation
Cleanness
Manual_SMOevoPLUS_eng_01.2019.doc
Fire, naked light and smoking is prohibited in rooms where O
handled.
Ensure that rooms where oxygen leaks can occur are ventilated in
such a way that the air cannot be accumulated with oxygen. In the
event that natural ventilation is not sufficient, technical ventilation is
required.
Due to the danger of ignition, ensure that all system components
coming in contact with oxygen or oxygen / ozone mixtures have
been cleaned. They must be free of particles that are loose or may
be released during operation, such as slag, welding residues and
machining swarf, as well as oil, grease and solvents. This
requirement can be fulfilled by pickling stainless steel following the
welding process.
Change clothes immediately that have been in contact with oxygen
or oxygen / ozone mixtures or are soiled with grease or oil.
Only use fittings, seals and measuring devices that are approved
for oxygen and kept free of oil and grease.
Manual Ozone Generating System SMOevo
PLUS
Safety
is
2
page 29 of 179
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