3. Method for sizing the safety device

3.1 Presentation

This section presents the information needed for sizing a safety device in any system that is to be protected. First of all, the discharge mass flow rate must be determined. Knowledge of the thermodynamic conditions upstream and downstream of the safety device is then used to determine the minimum flow cross section A of the safety device with a simple mass velocity model. The designer thus has a way to check this last calculation, which in principle is the responsibility of the manufacturer of the safety device.

All the thermodynamic parameters are shown in figure