Class 5 Boiler Practice Exam 2025 - Free Boiler Certification Practice Questions and Study Guide

Question: 1 / 400

What is the role of a pressure relief valve in a boiler?

To regulate water flow

To release excess pressure and prevent boiler explosions

The pressure relief valve plays a critical role in ensuring the safe operation of a boiler by releasing excess pressure. Boilers operate under high pressure, and if this pressure exceeds safe limits, it can lead to dangerous situations, including boiler explosions. The pressure relief valve is designed to automatically open when the pressure reaches a predetermined threshold, allowing steam or water to escape. This process reduces the pressure inside the boiler, preventing potential damage to the system and ensuring safe operation.

Regulating water flow, controlling fuel supply, and measuring steam temperature are functions associated with other components of boiler systems but are not the primary purpose of a pressure relief valve. The emphasis on safety and the prevention of catastrophic failure highlights why the role of this valve is crucial in boiler management.

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To control fuel supply

To measure steam temperature

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