Arkansas Boiler Operator Practice Exam

What is the main function of a pressure relief valve?

1. To enhance fuel efficiency

2. To maintain a constant water level in the boiler

3. To release excess pressure from the boiler

4. To regulate temperature within the boiler

The correct answer is: To release excess pressure from the boiler

The primary function of a pressure relief valve is to release excess pressure from the boiler. This mechanism is crucial for maintaining safety within the boiler system. By opening at a predetermined pressure, the valve allows steam or fluid to escape, thus preventing the boiler from exceeding its maximum allowable working pressure. This action safeguards the integrity of the boiler and associated equipment, reducing the risk of ruptures or explosions which can occur if excessive pressure builds up. In addition, the operation of the pressure relief valve is essential in complying with safety regulations and standards designed to protect operators and the facility. Without a functional pressure relief valve, the boiler may operate under unsafe conditions, posing a significant hazard. Hence, the role of the relief valve is fundamental to the overall safety management of boiler operations.