Taylor-Wharton LP3 - Manual (Page 4)

spilled liquid. If clothing should be splashed with liquid oxygen or otherwise saturated with the gas, air out
the clothing immediately, removing it if possible. Such clothing will be highly flammable and easily ignited
while the concentrated oxygen remains, and should not be considered safe for at least 30 minutes.
Replacement Parts Must be Suitable for Oxygen Service
Many materials, especially some non-metallic gaskets and seals, constitute a combustion hazard when in
oxygen service, although they may be acceptable for use with other cryogenic liquids. Make no substitutions
for recommended spare parts. Also, be sure all replacement parts are thoroughly "Cleaned For Oxygen
Service" in accordance with Compressed Gas Association (CGA) Pamphlet G-4.1 "Cleaning for Oxygen
Service" or equivalent industrial cleaning specifications.
Observe Safety Codes When Locating Oxygen Equipment
Before locating oxygen equipment, become thoroughly familiar with National Fire Protection Association
(NFPA) Standard No. 50, "Bulk Oxygen Systems", and with all federal, state and local safety codes. The
NFPA Standard covers the general principles recommended for the installation of bulk oxygen systems on
industrial and institutional consumer premises.
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 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.
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.
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