Manual Ozone Generating System SMOevo
Safety
Rev. 1.0
Page 26 of 91
3.8.1 Health Risks
A risk to health for humans exists when the oxygen content of respiratory air drops below
17 Vol% or exceeds 21 Vol%.
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
Fire, naked light and smoking is prohibited in rooms where O
2
is
handled.
Ventilation
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.
Cleanness
Due to the danger of ignition, ensure that all System Components
coming in contact with oxygen have been cleaned; i.e., they must
be free of particles that are loose or can 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 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.
