Alberta Boilers Safety Association (ABSA) Practice Test

Question: 1 / 400

How does a safety relief valve operate?

By blocking excess pressure automatically

By releasing fluid to the atmosphere

A safety relief valve operates by releasing fluid to the atmosphere when the system pressure exceeds a predetermined limit. This mechanism is crucial in protecting systems from overpressure scenarios that could lead to dangerous conditions, such as ruptures or explosions.

When internal pressure climbs beyond the set threshold of the valve, it opens and allows a controlled amount of fluid—typically steam or liquid—to escape. This action reduces the pressure within the system back to safe levels. The design of the valve ensures that it functions automatically without the need for manual intervention, providing a vital safety feature in various applications, such as boilers and pressure vessels.

The correct understanding is that the safety relief valve serves as a safeguard for the system, enabling the release of excess pressure directly to the atmosphere, thus maintaining operational safety and integrity.

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By adjusting the control input

By absorbing heat from the system

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