Cryogenic liquids and their boil-off vapors can rapidly freeze human tissue and may cause materials to crack or fracture under stress.
All cryogenic liquids produce large volumes of gas when they vaporize (at ratios of 600:1 to 1440:1, gas: liquid) and may create oxygen-deficient conditions. Examples of common cryogenic liquids used in the labs are nitrogen oxygen, and helium. Only properly trained individuals should handle cryogenic liquids.
If the container is leaking Nitrogen gas via the pressure release valve do not be alarmed, this is normal operation. All of the liquid will eventually boil off and the leaking will stop. If it is leaking from any other connection close the gas valve using cryogenic gloves and notify an emergency contact listed below.
The cylinders are designed to provide high pressure Nitrogen gas. The pressures will range from 250 to 350 psig.
What has most likely happened is that:
The proper corrective actions are to: