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Compressed Gas Cylinder Safety

Learn the essential safety protocols for handling, storing, and transporting compressed gas cylinders. This comprehensive guide covers proper identification, segregation, transportation, and storage techniques to ensure the safe use of various gas cylinders. Understand the classification of gas cylinders and the importance of labeling and securing them correctly. Avoid common mistakes and hazards associated with compressed gas cylinders, and get tips on proper storage, handling, and use to prevent accidents and ensure a safe working environment.

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Compressed Gas Cylinder Safety

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  1. Compressed Gas Cylinder Safety Environmental Health & Safety Chemical Safety Division University of Texas Health Science Center at San Antonio

  2. Classification of Gas Cylinders • Flammable Gasses • Oxygen and Oxidizing Gases • Acid and Alkaline Gases • Highly Toxic Gases • Cryogenic Liquefied Gases • Inert Gases

  3. Segregation of Gas Cylinders • Flammables • Methane, Propane, Hydrogen • Reactive • Acetylene, Vinyl Chloride, Tetrafluoroethylene • Oxidizers • Hydrazine, Hydrogen • Corrosives • Ammonia, Methylamine, Chlorine • Oxygen and nitrous oxide cylinders must be separated from flammables by minimum of 20 feet.

  4. Identification of Contents of Compressed Gas Cylinders • Clearly label all cylinders • Labels should be durable • Do not accept cylinders that are not clearly labeled • Color-coding is not a reliable means of identification • Cylinder colors vary from supplier to supplier • If cylinder contents cannot be identified: • Mark as “Contents Unknown” • Contact the manufacturer

  5. Transporting Gas Cylinders • A cylinder cart should always be used • Do not roll, drag, or slide cylinders • Transport cylinders with valve caps • Do not lift cylinders by the cap • Do not transport with the regulator attached • Cylinders must be fastened securely in upright position

  6. Storage of Compressed Gas Cylinders • Properly secure at all times • Straps, belts, or chains • Keep valve caps on unless the cylinder is being used • Store in a well ventilated area • Keep away from heat or ignition sources • Keep away from electrical circuits • Segregate Oxygen cylinders (empty or full) from fuel-gas cylinders and combustible materials • 20 feet minimum distance • Store flammable gas cylinders away from oxygen, nitrous oxide cylinders, or oxygen charging facilities. • Segregate full and empty cylinders • Label empty cylinders to prevent confusion • Empty cylinders should be returned to Central Receiving/Vendor

  7. Use of Compressed Gas Cylinders • Always use the proper regulator for the gas in the cylinder • Do not allow oil or grease to come in contact with cylinders or valves • Attach the regulator securely before opening the valve • Open the cylinder valves SLOWLY; stand to the side of regulator when opening valve • Do not attempt to repair cylinder valves while a cylinder contains gas pressure

  8. Things Not To Do • Never roll a cylinder to move it. • Never carry a cylinder by the valve. • Never leave an open cylinder unattended. • Never leave a cylinder unsecured. • Never grease or oil the regulator, valve, or fittings of an oxygen cylinder. • Never refill a cylinder. • Never use a flame to locate gas leaks. • Never attempt to mix gasses in a cylinder.

  9. Examples of Proper Storage

  10. Things to Remember • Always wear eye protection when working with compressed gases • Only use regulators that have both high and low pressure gauges • Never refill a cylinder or use a cylinder for storing any material. • The greatest hazard to a user of compressed gases is asphyxiation • Remember, except for oxygen and air, ALL GAS IS AN ASPHYXIANT

  11. Questions • Environmental Health & Safety (210)567-2955 1.343T DTL http://research.uthscsa.edu/safety/

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