Safety in cryogenics

This article deals with safety in any cryogenic system, both during operation and in the event of accidental overpressure leading to the opening of the safety device. The overpressure can be the consequence of very large heat loads in a tank or circuit of cryogenic fluid owing to a loss of vacuum or a cryogenic fluid leakage into the vacuum chamber. A method to size the safety device (bursting disk, safety valve) is presented. Recommendations are also given.