Final answer:
Stop valves are allowed on the inlet and outlet side of a pressure relieving device with certain conditions in engineering
Step-by-step explanation:
In engineering, stop valves are often used in various systems to control the flow of fluids. When it comes to pressure relieving devices, such as safety relief valves, stop valves are allowed on the inlet and outlet side, as long as certain conditions are met.
One important condition is that the stop valves must be locked in the open position to ensure that the pressure relieving device can function properly. This means that the valves should not be closed or used as a means to isolate the pressure relieving device from the system.
This requirement is necessary to prevent any unintended blockage or obstruction that would hinder the pressure relief process, ensuring the safety and effectiveness of the system.