Skip to Content

Pressurized Systems

Do not conduct a reaction in, or apply heat to, a closed system apparatus unless the equipment is designed and tested to withstand pressure.

Pressurized systems should have an appropriate relief valve.

Pressurized systems must be fully shielded and should not be conducted in an occupied space until safe operation has been assured. Until safe operation is assured, remote operation is mandatory.

Safety points to remember:

  • Minimize risk and exposure.
  • Identify and assess all hazards and consequences.
  • Use remote manipulations whenever possible.
  • Minimize pressure, volume, and temperature.
  • Design conservatively.
  • Use material with a predictably safe failure mode.
  • Ensure that the components of the pressurized system will maintain structural integrity at the maximum allowable working pressure. Avoid material that may become brittle.
  • Operate within the original design parameters.
  • Provide backup protection (e.g., pressure relief valves, fail-safe devices).
  • Use quality hardware.
  • Use protective shield or enclosures.
  • Use tie-downs to secure tubing and other equipment.
  • Do not leave a pressurized system unattended.

Normally pressurized systems should not include glass components unless they are specially designed and intended for that purpose.

May 2011
Reviewed November 2014