Question

What is the function of safety valves in the boiler?

(a) To prevent excessive steam pressure

(b) To prevent excessive air pressure

(c) To prevent water pressure

(d) To prevent from rising temperatures

I got this question in an internship interview.

Query is from Boiler Mounting Accessories topic in division Steam Generators & Accessories of Energy Engineering

Answer 1

The correct option is (a) To prevent excessive steam pressure

Easy explanation: The function of safety valve is to prevent the excessive steam pressure inside the boiler drum exceeding the design pressure. When the pressure inside the boiler drum exceeds the rated pressure, safety valve automatically opens and discharges the steam to the atmosphere till normal working pressure is retained.