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Old 03-22-2012, 02:48 PM #1
8765
 
 
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Condemn Rate

How often do tanks get condemned after a rehydro test? I figured tank that get dropped, abused, etc will be more likely to fail rehydro, but it'd be interesting to know if a particular brand tends to fail rehydro more often.

Then has anyone gotten their own tank condemned?
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Old 03-22-2012, 03:06 PM #2
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How often do tanks get condemned after a rehydro test? I figured tank that get dropped, abused, etc will be more likely to fail rehydro, but it'd be interesting to know if a particular brand tends to fail rehydro more often.

Then has anyone gotten their own tank condemned?
Don't forget the other fail method - end of lifespan.

As for which brand?......My vote would be GCI
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Old 03-22-2012, 03:56 PM #3
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It's rather rare for a tank to fail for reasons other then the life span coming up. It happens but it's not that rare unless you really beat on a tank or something structurally isn't right.
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Old 03-22-2012, 04:24 PM #4
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For us, its very rare that we have to condemn a bottle. There isn't one particular manufacturer that stands out above the others as far as failure rates are concerned; its really hit or miss. Again, its very rare that we ever have to condemn a tank when we hydro test.
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Old 03-22-2012, 07:02 PM #5
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Pretty much most rehydro places will tell you, they do not remember the last time they had to condemn a cylinder. Its very few, and far between.

Tanks can take a beating(performance wise, not physical damage) for years. and pass hydro just fine.
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Old 03-22-2012, 09:07 PM #6
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For us, its very rare that we have to condemn a bottle. There isn't one particular manufacturer that stands out above the others as far as failure rates are concerned; its really hit or miss. Again, its very rare that we ever have to condemn a tank when we hydro test.
Heh. Hence I bought a ninja tank, and I'm buying another one now.
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Old 03-24-2012, 12:28 PM #7
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Originally Posted by Rob @ Ninja PB View Post
For us, its very rare that we have to condemn a bottle. There isn't one particular manufacturer that stands out above the others as far as failure rates are concerned; its really hit or miss. Again, its very rare that we ever have to condemn a tank when we hydro test.
Can you say how many, in how many years that you guys have been doing hydrotesting, have failed? Maybe how many tanks you guys have hydrotested altogether?
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Old 03-24-2012, 04:56 PM #8
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You have to remember that the carbon fiber wrapped tanks are lined with a thin shell of aluminum inside. Rough handling can damage the outside but most booboos can generally be fixed. It takes bad air fills to damage the aluminum inside. Wet fills can start the aluminum corroding and that can lead to pitting.

If your field or store is taking care of their fill system and you don't play football with your tank, it is highly unlikely that you will ever fail a hydro.
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Old 04-14-2012, 07:10 AM #9
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My crossover carbon tank actually failed hydro yesterday. They said it expanded 3% past the allowed limit. Off to buy a new tank I guess. Anyone want a fancy paperweight?
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Old 04-14-2012, 11:46 PM #10
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My crossover carbon tank actually failed hydro yesterday. They said it expanded 3% past the allowed limit. Off to buy a new tank I guess. Anyone want a fancy paperweight?
Do you mean Crossfire? Any pictures of said tank?
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Old 04-14-2012, 11:51 PM #11
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My crossover carbon tank actually failed hydro yesterday. They said it expanded 3% past the allowed limit. Off to buy a new tank I guess. Anyone want a fancy paperweight?
It happens! Most likely from too fast or too high pressure fills unless it was corroded inside.
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