Owner's manual

TW-407 Rev.-

Extreme Cold - Cover Eyes and Exposed Skin

Accidental contact of liquid oxygen 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. Safe-

ty goggles or a face shield should be worn if liquid ejection or splashing may

occur or cold gas may issue forcefully from equipment. Clean, insulated gloves

that can be easily removed and long sleeves are recommended for arm protec-



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.

  -

ed 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 com-

bustion 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

        

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 and Liquid Argon

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 con-

tact with the liquid, cold pipes and equipment, or the cold gas exists. Safety gog-

gles 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 with-





Liquid nitrogen is obtained by cooling air until it becomes a liquid and then removing the oxygen.



atmospheric pressure.

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.

WARNINGS