We use the first cop laying on the ground to mark the hot zone. (^;
FWIW a full acetlene cylinder is at about 250psi and an O2 is about 2300
I have seen home O2 cylinders stuck through the wall after a fire. As the left the apartment, they looked like rockets as the aluminum burned.
Thank you Clay for correctly pointing out the AL was the fuel — a Class D fire.
O2 NEVER burns unless we are talking nuclear fires, and we ain’t.
The Oxygen cylinders are pressure-propelled when the top valve is broken off or otherwise fails.