Final answer:
Piping not protected by a pressure relieving device, or that can be isolated from a pressure relieving device, should be designed for at least the maximum pressure that the system can generate.
Step-by-step explanation:
In order to ensure the safety of a pressure system, piping not protected by a pressure relieving device, or that can be isolated from a pressure relieving device, should be designed for at least the maximum pressure that the system can generate. This is important to prevent catastrophic failure of the piping.
For example, if a pipe is designed to handle a maximum pressure of 1000 psi, then the piping not protected by a pressure relieving device or that can be isolated from a pressure relieving device should also be designed for a minimum pressure of 1000 psi.
This ensures that even if the pressure relieving device fails or is isolated, the piping can still safely handle the maximum pressure that the system can generate.