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Compressed Gases

All compressed gases should be ordered through Marketplace.

View our video on how to properly install a gas regulator as well as other safety tips.

Hazardous gases may need further controls such as:

  • Gas cabinet
  • Gas monitors
  • Emergency shut-offs
  • Leak Testing
  • Air supplying respirators

Please review the use requirements of each hazard class

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The use of hazardous compressed gases in a fume hood also requires special precautions

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Cryogenics

Must be ordered through Marketplace.

Only inert gases are permitted. Special precautions are needed when using helium due to its temperature.

Should only be stored and used where sufficient ventilation is available.

Safe Practices

  •  System Durability
    – All system components should be made to withstand extreme temperatures
  • Pressure Relief
    – System sections that could be valved off need their own pressure relief valve
    – Ensure these valves vent towards a safe location
  • Avoid Ice Plugs
    – Contact with air can cause an ice plug to form and hinder pressure relief
    – Contact University Police for assistance if one is found
  • Proper Tool Use
    – Use tongs to immerse and remove objects from cryogenic liquids Never use a funnel for liquid transfer

Personal Protective Equipment (PPE)

  • The eyes are the most sensitive body part to the extreme cold. Recommended PPE includes:
    • Full face shield over safety glasses
    • Loose-fitting insulated or leather gloves
    • Long sleeved shirt and trousers without cuffs
    • Apron
    • Removal of all metal objects (jewelry, watches, etc.)

Hazard reviews are required on all newly purchased, built, or modified tools involving cryogenic liquids.

More Information

Visit our webpage – https://ehs.ncsu.edu/laboratory-safety/compressed-gases/

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