Oiled Sea Otter Capture Course

Cryogenic Fluids


Handling cryogenic fluids safely is largely a matter of knowing their properties and using common sense procedures based on that knowledge. In the rehabilitation center, the most common cryogenic fluid will be liquid nitrogen used to preserve biological specimens. Liquid nitrogen has a boiling points below -73.3°C.

Safety Practices

During operation with liquid nitrogen, personnel must observe the following safety practices:

Liquid nitrogen containers (dewars) must be safety vented and protected against mechanical shock and damage. Glass dewars must be wrapped with fabric or fiber-glass tape, or otherwise protected to prevent flying glass in the event of breakage.

Proper transfer equipment must be used when moving liquid nitrogen from one container to another.