Burst disc for HP tanks

[freedivernd]

DRE posted earlier:

\"Nope, (insert)as per Derrick asking about it being o.k. with the DOT (end insert),but the DOT is the least of your concerns. It's only diveshops who'll start making a fuss about it if they know (or rather, if they don't know any better). SS shims just replace burstdisks - I wouldn't recommend them for AL, but especially for LP steels they're great. Depending on what type valve you have, you can probably get them from .\"

Now, I'm just asking...and this only sounds so harsh because I believe there is a safety issue here but..
DRE, do you suppose the dive shops might make a fuss because you're talking about tampering with THEIR safety? or MINE? Or isn't safety an issue here? DOT might be the least of a divers concerns but might also be one of the bigger concerns of a dive filling station (right up there with the tank exploding, which if a tank is going to explode.. that's where it's going to happen almost everytime). DOT specifies that during every 5 year hydro the burst disk has to meet certain specifications and because those specs are hard to measure they generally just get replaced at that time by the place doing the hydro. Think there's a reason for this, or no reason? -- and no, you can't get ss burst disks from (at least not on their site I didn't find them)
From what I understand, a burst disk going into relief stage during a dive is about as common as getting struck by lightning and the type of thing that would increase the odds are things like occasionally over filling the tank and that a burst disk will more likely fail (a misnomer, read "work") during filling, which is also, as I stated above...if a tank is going to explode.. that's when it's going to happen. Do you stand by your tank when it's getting filled? I guess I'd prefer not to.

Fred