What is the basic cause of all boiler explosions?

The basic cause of all boiler explosions primarily relates to the accumulation of unburned fuel or combustion vapors in the boiler system. This situation can create a combustible environment, especially when a sufficient ignition source is introduced. When these vapors accumulate and are ignited, they can lead to a violent explosion due to the rapid expansion of gases and pressure buildup within the confined space of the boiler.

Understanding this concept is crucial for ensuring safety in boiler operations. Maintaining appropriate combustion controls and ensuring that fuel burning is efficient can help prevent such dangerous situations. Regular monitoring and servicing of the system are essential to identify and rectify any issues that may lead to an unsafe build-up of unburned fuel or vapors.