New York Low Pressure Boiler COF Practice

What must be done to a boiler before an internal high-pressure inspection?

1. Heat it to operating temperature

2. Shutdown and drain it

3. Refill it with water

4. Increase the pressure to maximum

The correct answer is: Shutdown and drain it

Before performing an internal high-pressure inspection on a boiler, it is essential to shut the boiler down and drain it. This procedure is critical for safety and effectiveness. Draining the boiler eliminates the risk of accidental burns, steam explosions, or other hazards that could occur if the system is still under pressure or contains hot water. Once the boiler is completely drained, it can be safely inspected for issues such as corrosion, scaling, or mechanical wear that may not be discernible when the boiler is filled or pressurized. This process ensures that inspectors have a clear view and access to all internal components to perform a thorough assessment and carry out any necessary maintenance or repairs. Other options do not prioritize safety or inspection preparedness in a way that aligns with standard practices for boiler maintenance. Heating the boiler or refilling it with water would interfere with the inspection process, while increasing the pressure could create dangerous conditions.