Taylor-Wharton Auto Fill Laser Pak - Manual (Page 3)

3
WARNING
The following safety precautions are for your protection. Before installing, operating, or maintaining this unit
read and follow all safety precautions in this section and in reference publications. Failure to observe all
safety precautions can result in property damage, personal injury, or possibly death. It is the responsibility of
the purchaser of this equipment to adequately warn the user of the precautions and safe practices for the use of
this equipment and the cryogenic fluid stored in it.
Safety Precautions for Liquid Nitrogen
Nitrogen is an inert, colorless, odorless, and tasteless gas making up four-fifths of the air you breathe. Liquid
nitrogen is obtained by cooling air until it becomes a liquid and then removing the oxygen. Air is roughly
one-fifth oxygen. Liquid nitrogen is at a temperature of -320
°F (-196°C) under normal atmospheric pressure.
Extreme Cold - Cover Eyes and Exposed Skin
Accidental contact of liquid nitrogen or cold issuing gas with the skin or eyes may cause a freezing injury
similar to frostbite. Handle the liquid so that it won't splash or spill. Protect your eyes and cover the skin
where the possibility of contact with the liquid, cold pipes and cold equipment, or the cold gas exists. Safety
goggles or a face shield should be worn if liquid ejection or splashing can occur or cold gas can issue
forcefully from equipment. Insulated gloves that can be easily removed and long sleeves are recommended
for arm protection. Trousers without cuffs should be worn outside boots or over the shoes to shed spilled
liquid.
Keep Equipment Area Well Ventilated
Although nitrogen is non-toxic and non-flammable, it can cause asphyxiation in a confined area without
adequate ventilation. Any atmosphere not containing enough oxygen for breathing can cause dizziness,
unconsciousness, or even death. Nitrogen, a colorless, odorless, and tasteless gas, cannot be detected by the
human senses and will be inhaled normally as if it were air. Without adequate ventilation, the expanding
nitrogen will displace the normal air resulting in a non-life-supporting atmosphere.
Dispose of Waste Liquid Nitrogen Safely
Dispose of waste liquid nitrogen out-of-doors where its cold temperature cannot damage floors or driveways
and where it will evaporate rapidly. An outdoor pit filled with clean sand or gravel will evaporate liquid
nitrogen safely and quickly.
For more detailed information concerning safety precautions and safe practices to be observed when handling
cryogenic liquids consult CGA pamphlet P-12 "Handling Cryogenic Liquids" available from the Compressed
Gas Association, 1235 Jefferson Davis Highway, Arlington, VA 22202.
NOTE: Argon is an inert gas whose physical properties are very similar to those of nitrogen. For
handling of liquid argon, follow the safe practices described for the handling and use of liquid nitrogen.
CAUTION:
The Auto-Fill Laser Pak is not designed for use in oxygen service.