Mag fires are very easy to put out, we have a squirt bottle of plane old water, If you do get a fire you simply squirt it with water the steam will blow away the burning material, and cool the rest. and the sparklers burn out on the floor.blueldr wrote:It looks like a gas or TIG weld. The gaseous welding shield must keep the magnesium from igniting unless it is done inside some sort of a compartment filled with an inert gas. Magnesium burns like hell, but I suppose it must have to have an oxygen source for combustion.
But in reality the mag never should get hot enough to catch fire. but when it does, it will provide its own O2 and fuel to continue to burn in any atmosphere, Plus the more material burning the harder it is to extinguish.
Another tid-bit, Tungsten Inert Gas welding (TIG) was invented during WWII to weld Mag parts for the war effort. and it does a fine job in the right hands.
FAR 43-A states that welding on an engine structural component is a major repair, now the question is, is the sump a structural component?