Went through an induction at a place that does Ali extrusions. In the video was a piece about a small amount of liquid left in a soda can that was placed into the ali scrap bin just prior to it being added to the furnace.
The main lot of material had been pre heated so moisture was not present, but not the soda can.
The result was an explosion killing quite a few people from the molten metal going everywhere.This happened in Australia but can not remember the year.
As a result, some places do not have sprinkler fire systems and if there is a fire, it is recommended that it burns itself out.Just get as many people out of the building as quick as possible. These places have policies of no drinks in the vacinity, no lighters etc,and regular fire drills.
This is not from the titanium burning, it's from the water quickly being converted to steam which is a much larger volume, causing the molten liquid to bubble out furiously. Not so much an explosion as violent boiling.