Or roll the legs up to shorten them !Ya don't wear frayed jeans when welding either. I did when working on a hay rake and both legs got lit up. Looked like the dancer in the PI doing the candle dance. No real damage to me as I caught on pretty quick. My dad thought it was funny.
This brought back a memory. Our shift supervisor was up in a man cage on forklift to oxy cut a ladder off the wall. The oxy set was on the ground and got showered in sparks as he was cutting, unnoticed by him of course. In short order the acetylene hose burned through and ignited and we had a nasty fire and explosion potential, so we all turned and began to run instinctively, including the forklift driver who had jumped from his machine. So my poor supervisor was suspended in cage with no way down over a flaming acetylene set! Luckily for him, I realised his driver had bailed and I returned to fight the fire, eventually smothering it with my leather gloves. We laughed about it later but it was scary at the time.I was up a ladder oxy cutting something off the side of the building where i worked
I set my groovy nylon (?) steel-toe trainers on fire at work the other day with the plasma cutter - concentrating too hard on trying to keep a straight line. Leather and heavy cotton for me from now on And we don't do anything hot for the last hour before home time, just in case something starts to smoulder......he saw a spark hit his leg and he brushed it off as soon as it hit. There was a hole melted in the pants.
Have heard of a situation where aluminum dust had accumulated at a grinding wheel and was set afire by someone later grinding steel at that wheel.Does the powdered alum. and rust pertain to swarf.? Like fine metal dust laying around could be combustible? Or does this apply to airborne particles?
Had no idea about grain explosions and was raised in a farm community. As a boy I worked my share of dusty days on the farm, and with cows the added methane mix. lol Gotta respect the farmers a little more now
Stacked square bales which have gotten wet can spontaneously combust. Opening one which is almost there lets the smoke out before it turns to flame.Have heard of a situation where aluminum dust had accumulated at a grinding wheel and was set afire by someone later grinding steel at that wheel.
Very interesting post. That is a new one to me. The question is, why would somebody be grinding aluminium on a wheel?Have heard of a situation where aluminum dust had accumulated at a grinding wheel and was set afire by someone later grinding steel at that wheel.
Dropping turf on the burning magnesium alloy part of an incendiary bomb will work to extinguish it if the air can be blocked enough, but it will not put out a thermite fire (rust and aluminium oxide) as it supplies its own oxygen from the aluminium oxide. In the incendiary bombs used in WW2 the small thermite charge was just used to ignite the magnesium alloy.All this hay stuff is so boring. Heath fires are put out by smothering the fires as are another way to extinguishing incendiary bombs by dropping a turf on top of them.
But think of it rationally, the Germans dropped incendiary bombs which were principally rust from their factories mixed with ground up British bombers
There seems to be some misunderstanding here. My memory is that magnesium is used to start the exotherm of the intimate and larger mixture of aluminium and iron oxide( rust). My first encounter was at the outbreak of WW2 when we, as frightened little school children of the age of 9 had to watch a Civil Defence member extinguish a standard RAF 4lb incendiary device but worse still go though a 'poison gas' filed air raid shelter wearing our gas masks. It turned out to be tear gas and my father who was in the local gas decontamination squad went into typical Atkinson merriment! That was 80 years ago and whilst I still have my little home made Boy Scout axe that I dug live and partly burnt German incendiaries out for souvenirs along with shrapnel and anti aircraft nose cones, my memory may be at fault.Dropping turf on the burning magnesium alloy part of an incendiary bomb will work to extinguish it if the air can be blocked enough, but it will not put out a thermite fire (rust and aluminium oxide) as it supplies its own oxygen from the aluminium oxide. In the incendiary bombs used in WW2 the small thermite charge was just used to ignite the magnesium alloy.