What should you inspect regularly on a steam boiler system?

In a steam boiler system, regular inspection of components is crucial for safe and efficient operation. Each aspect mentioned in the question plays a significant role in ensuring the system functions correctly and safely.

Inspecting fuel quality is essential because poor-quality fuel can lead to incomplete combustion, resulting in increased emissions, efficiency losses, and potentially harmful conditions for the boiler.

Water hardness is also critical to monitor. High levels of hardness can lead to scaling inside the boiler, which reduces heat transfer efficiency and can cause overheating and damage to the boiler components.

The safety valve function is vital, as the safety valve is a crucial component designed to prevent overpressure conditions in the boiler. Regular testing and inspection ensure that the safety valve opens at the correct pressure to avoid dangerous situations.

Given that all these elements contribute significantly to the safe and efficient operation of a steam boiler system, regular inspection of each is necessary to maintain safety and performance standards. Therefore, the best answer is that all of the above should be regularly inspected.