Boiler explosion

Boilers are big metal boxes that people use to heat up water, and the hot water is used to make things like heat for buildings, or steam to power machines. When a lot of pressure builds up inside the boiler, and there's nowhere for it to go, that pressure can cause a big explosion.

It's kind of like when you blow up a balloon too much and it pops really loudly. A boiler explosion can be even louder, and can cause a lot of damage. That's why it's important to make sure boilers are maintained properly and checked regularly so that they don't build up too much pressure and explode.

It's also important to make sure that people are careful around boilers and stay away from them when they're being used. Like with anything that can be dangerous, it's best to make sure you know what you're doing and have someone who knows how to use it around to help.