What will happen when the pressure in the boiler reaches the maximum allowable working pressure?

When the pressure in the boiler reaches the maximum allowable working pressure, the safety valve is designed to pop open. This safety mechanism serves a crucial role in protecting the boiler and its system from potential overpressure situations that could lead to dangerous conditions.

The safety valve is calibrated to a specific pressure setting, which corresponds to the maximum allowable working pressure. When this pressure is reached, the valve opens automatically, allowing steam to escape. This venting of steam reduces the pressure in the boiler, thereby preventing any risk of failure or explosion that could occur if the pressure were to exceed safe limits.

The proper functioning of a safety valve is vital in maintaining operational safety in power engineering. By ensuring that the boiler does not exceed its design pressure, the safety valve helps protect the entire system, preventing catastrophic failures.