Is a Dented Air Tank Safe?
From contributor C:
I would stay away from used and/or damaged tanks. Believe it or not, air tanks can explode when they fail (although I'm sure that's not what happens each time there is a leak). And when they do explode, they become shrapnel. I know of one such event where it killed a person. This would be part of the reason each manufacturer recommends draining moisture from the tank daily.
From contributor P:
Any time steel is bent or formed, its grain structure is changed. This is called cold-working. This area is generally harder and even stronger, but it also is much more corrosion prone. The harder areas will crack first if they are cold-worked too much. Since you do not know what is going on inside the tank, cracks forming, etc., I would scrap it. Old tanks are generally the weakest where the legs are welded on and since most corrosion takes place near the bottom. Chances are it would just start a slow leak, but they do explode and can take the building with them if they are inside.
From contributor M:
I never thought an air tank would explode either, but I saw one that did, and it was sitting in my lawyer's office... That's all I need to know about used, dented tanks.
From contributor B:
Our company always cuts up old tanks before disposal. It's for legal reasons.
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