Minnesota Boiler License Practice Exam

If a safety valve is leaking at a pressure lower than its opening point, what should be done?

1. Tighten the tension on the spring until it stops

2. Keep lifting the lever to check if it seats

3. Have the valve repaired or replaced

4. It doesn't matter if the safety valve leaks some

The correct answer is: Have the valve repaired or replaced

When a safety valve is leaking at a pressure lower than its designated opening point, it signals a malfunction or defect within the valve. The primary function of a safety valve is to prevent excessive pressure in a boiler or system by discharging steam or fluid when the pressure exceeds a certain threshold. If the valve is leaking below this pressure, it is not performing its critical function properly, which poses a safety risk. Choosing to have the valve repaired or replaced ensures that the safety mechanism of the boiler remains reliable and functional. This action addresses any underlying issues with the valve and restores its intended performance level, which is crucial for maintaining safety in boiler operations. In contrast, simply tightening the spring tension or repeatedly lifting the lever does not fully address the problem and could lead to further malfunction without ensuring safe operation. Likewise, disregarding the leak could endanger the system and personnel, as it compromises the safety designed into the operation of the boiler.