I wonder if somebody could tell me how CO2 working as a fire extinguisher, regarding that it is full of oxygen?Or, is it possible that there are is some type of substance that is not possible to extinct with CO2.Is it possible that CO2 make an opposite reaction and enlarge fire?
Pipe dope (joint compound) does not normally dry out. After it is applied it remains soft and pliable, although with time it will form a crusted surface. The pipe dope is used to form a better seal between the threads of the pipe and the fittings. As the pipe and the fittings change temperatures, the materials will expand and contract. If the pipe dope dried out it would crack and begin to leak over time. By remaining pliable it maintains the seal and prevents leakage.
100% How about if the hydrant is broken or frozen. Or heaven forbid that you drop the water pressure so the fire departmant can't put out another fire.
