Gas Fitter Practice Test

What is the purpose of a temperature and pressure relief valve in a boiler system?

1. To control feedwater temperature

2. To prevent overheating

3. To relieve excess heat and pressure

4. To maintain system efficiency

The correct answer is: To relieve excess heat and pressure

The purpose of a temperature and pressure relief valve in a boiler system is to relieve excess heat and pressure. This component is crucial for maintaining safety within the boiler system. In the event that the temperature or pressure exceeds specified limits, the valve opens to release steam or hot water, preventing potential damage to the boiler and reducing the risk of catastrophic failure, such as an explosion. This function is particularly important because boiler systems operate under high pressure and temperature conditions. Without a properly functioning relief valve, excessive pressure build-up could lead to system failures, compromising both safety and operational integrity. While it might seem that controlling feedwater temperature or preventing overheating could also be roles of the system, these functions are secondary to the primary safety mechanism provided by the relief valve. Maintaining system efficiency is important, but it is not the main purpose of the temperature and pressure relief valve. The valve is specifically designed to mitigate dangerous conditions, emphasizing its essential role in ensuring a safe operating environment in boiler systems.