I could've died

So, the other day at work I was working with this machine. It's a gasoline pressure sprayer, with a kerosene boiler, to heat the water. I was minding my own business when all of a sudden I hear this BBOOOMMM, and a tremendous amount of heat. Suffice it to say I take off running, and cursing up a storm. We aren't entirely sure as to what happened, but apparently the kerosene boiler exploded into a giant fireball, which caught the machine on fire too. Luckily we quickly turned off the machine, and the fire died. I could've died cause I was only six feet away when it happened! Not gonna use that thing again.