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Compressed Gases. Compressed gas description . Definition of a compressed gas - any gas, or mixture of gases, that is pressurized and contained in a cylinder or tank. 1a. Compressed gas description. Examples of compressed gases Acetylene Anhydrous ammonia Carbon dioxide Helium

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compressed gas description
Compressed gas description
  • Definition of a compressed gas - any gas, or mixture of gases, that is pressurized and contained in a cylinder or tank.

1a

compressed gas description3
Compressed gas description
  • Examples of compressed gases
    • Acetylene
    • Anhydrous ammonia
    • Carbon dioxide
    • Helium
  • Types of containers in which compressed gas is stored

1b

cryogenic liquids
Cryogenic liquids
  • Definition of a cryogenic liquid - matter that exists at minus 200 degrees Celsius
  • Examples of cryogenic liquids
    • Liquid nitrogen
    • Argon
    • Liquid oxygen

2a

handling and inspection procedures
Handling and inspection procedures
  • Ensure gas containers are identified with a DOT or TC label
  • Cylinders must never be dropped, slid, or rolled

3a

handling and inspection procedures6
Handling and inspection procedures
  • Use carts or other material handling equipment to move cylinders
  • Regulators, pressure relief devices, valves, and hoses must be designed for the specific container

3b

handling and inspection procedures7
Handling and inspection procedures
  • Never interchange equipment between different types of gases
  • Pressure relief devices maintain pressure in cylinder at a desired level

3c

handling and inspection procedures8
Handling and inspection procedures
  • Inspect cylinders and devices, and remove defective equipment from service
  • Inspect threads on valves and regulators for damage, dirt, grease, and oil

3d

handling and inspection procedures9
Handling and inspection procedures
  • Threads on regulators and auxiliary equipment must match the container valve threads - adapters are not allowed
  • Connections must not be tampered with, or forced together

3e

handling and inspection procedures10
Handling and inspection procedures
  • Valves should be opened slowly, with valve outlets pointed away from the user and other persons
  • Valves should be opened with the wrench supplied by the vendor

3f

handling and inspection procedures11
Handling and inspection procedures
  • Valves should not be hammered open or closed

3g

storage procedures
Storage procedures
  • Containers must be stored upright
  • Storage areas must be well-ventilated
  • Avoid storage temperatures above 125 degrees Fahrenheit

4a

storage procedures13
Storage procedures
  • Post the names of the gases in the storage area
  • Keep valve caps on containers when not connected to dispensing equipment

4b

storage procedures14
Storage procedures
  • Keep compressed gases away from fires, flames, and welding torches

4c

storage procedures15
Storage procedures
  • When containers are in storage, remove:
    • Regulators
    • Cylinder connections
    • Hoselines
    • Similar auxiliary devices

4d

storage procedures16
Storage procedures
  • Store oxygen away from flammable gas containers and combustibles
    • 20-foot rule
    • Non-combustible 5-foot high barrier

4e

storage procedures17
Storage procedures
  • Ensure that the storage area is:
    • properly labeled
    • secure
    • away from ignition sources
    • separate from oxidizing gases
  • Types of containers in which cryogenics are stored

4f

compressed gas hazards
Compressed gas hazards
  • Inert gases
  • Oxidizing gases
  • Fire hazards of flammable compressed gases

5a

compressed gas hazards19
Compressed gas hazards
  • Health hazards of poison gases
  • Corrosive gases
  • Other hazards

5b

cryogenic liquid hazards
Cryogenic liquid hazards
  • Extreme cold temperatures
  • Asphyxiation
  • Splashing and boiling during transfer

6a

personal protective equipment
Personal protective equipment
  • Eye and face protection
  • Gloves
  • Aprons
  • Foot protection

7a