Pressurized systems can occur in the laboratory. These must be properly handled to avoid serious accidents.
Systems under pressure can:
(1) rupture or explode, with generation of shrapnel-like fragments
(2) release the contents of the pressurized container
(3) eject the lid when containment removed
Pressurized containers in the laboratory can be encountered in:
(1) microbiology
(2) chemistry
(3) autoclaves
(4) distillation devices
Recommendations:
(1) Identify all systems likely to become pressurized in the laboratory.
(2) Systems known to be under pressure should:
(2a) have walls strong enough to withstand the pressure
(2b) have a means of measuring pressure inside the container if possible
(2c) have an overpressure release system
(2d) have a containment structure when appropriate
(3) Determine the impact of sudden loss in utilities on pressurized systems.
(4) Laboratory workers should have appropriate personal protective equipment including face shield.
(5) Warning signs should be posted.
(6) Worker training should include handling of systems under pressure.
(7) Workers should be aware of all conditions associated with over-pressurization (overfilling, overheating, etc).
