Class 5 Boiler Practice Exam 2026 - Free Boiler Certification Practice Questions and Study Guide

The correct response emphasizes that allowing a temporary plug in the discharge opening of a safety relief valve can pose significant safety risks. Safety relief valves are critical components in a boiler system designed to release excess pressure to prevent catastrophic failure. Placing a temporary plug in the discharge opening hinders the valve's ability to function properly, which can lead to dangerous situations.

While some might think that a temporary plug could be used without restrictions, this action would compromise the safety measures in place, which are essential for safe boiler operation.

In many regulatory frameworks, using a temporary plug is strictly prohibited as the integrity and operational reliability of safety devices must be maintained at all times. Therefore, an understanding of the role and regulatory requirements surrounding safety relief valves is essential, and temporarily obstructing their function is not permissible under any circumstances to ensure the safety and compliance of the boiler system.