Re: Man Killed Disarming CW Shell
This is where alot of mis-information get started, as pointed out in my first post.
Simply banging or dropping civil war artillery shells will not make them go off (the only exception to this is the Tice Fuse). By avoiding the conditions of sparks, friction, compression (internal gas pressure), heat (572F or higher), and static electricity will eliminate the threat. (oh and by the way remember this when your comrades are smoking pipes or cigars with a cartridge box full of powder within the ranks of others, although another topic).
Drilling a shell or grinding on a shell with an open cavity is the way inwhich this occurs. And yes, powder from a dry shell is volitile.
However, there is another occurance that has been seen in shells that have gotten wet over time. Water can leak into the cavity of a shell and mix with the black powder. This can occur over time and as the water seeps in and evaporates within the shell, the by product is Hydrogen Sulfide (H2S). The gas pressure builds up in these shells and can be anywhere between 5 and 20psi. This gas is volatile and many believe that this is what causes the actual explosion once the chamber has been breeched. In fact I have disarmed shells that have hissed once being punched through.
Also, electrolysis is done under water and the electrical current is not turned on until the item is submerged in water, so it is unlikely this was the cause.
There are reports now coming out that support the initial claim that he was cleaning a shell, but using a hand grinder to do it (presenting the risk of spark, friction).
This email is not directed towards anyone individually, however this forum would expect no less in regards to accuracy of information on less important topics and therfore is why I posted.
I do disarm artillery shells, and have done so following the US Government's guidelines and through consultation of the nation's leading experts on Civil War artillery. We drill every shell remotely, underwater, and flush the cavities thoroughly.
As in a previous post, I strongly urge anyone who knows, or is, disarming shells in what you precieve to be an unsafe manner, tell them to stop immediately.
John Walsh
Originally posted by Tom Ezell
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This is where alot of mis-information get started, as pointed out in my first post.
Simply banging or dropping civil war artillery shells will not make them go off (the only exception to this is the Tice Fuse). By avoiding the conditions of sparks, friction, compression (internal gas pressure), heat (572F or higher), and static electricity will eliminate the threat. (oh and by the way remember this when your comrades are smoking pipes or cigars with a cartridge box full of powder within the ranks of others, although another topic).
Drilling a shell or grinding on a shell with an open cavity is the way inwhich this occurs. And yes, powder from a dry shell is volitile.
However, there is another occurance that has been seen in shells that have gotten wet over time. Water can leak into the cavity of a shell and mix with the black powder. This can occur over time and as the water seeps in and evaporates within the shell, the by product is Hydrogen Sulfide (H2S). The gas pressure builds up in these shells and can be anywhere between 5 and 20psi. This gas is volatile and many believe that this is what causes the actual explosion once the chamber has been breeched. In fact I have disarmed shells that have hissed once being punched through.
Also, electrolysis is done under water and the electrical current is not turned on until the item is submerged in water, so it is unlikely this was the cause.
There are reports now coming out that support the initial claim that he was cleaning a shell, but using a hand grinder to do it (presenting the risk of spark, friction).
This email is not directed towards anyone individually, however this forum would expect no less in regards to accuracy of information on less important topics and therfore is why I posted.
I do disarm artillery shells, and have done so following the US Government's guidelines and through consultation of the nation's leading experts on Civil War artillery. We drill every shell remotely, underwater, and flush the cavities thoroughly.
As in a previous post, I strongly urge anyone who knows, or is, disarming shells in what you precieve to be an unsafe manner, tell them to stop immediately.
John Walsh
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