testing a pressure vessel - oil can

[brightspark]

anyone worrying about there comp tank generaly if there rusty on the bottom they may pinhole after years of use an easy way to check for any serious problems is turn it upside down and tap along the base with a hammer .if theres no dents apear the metal will be good and tank should be sound and safe to use .many of the older tanks are a lot thicker than the new ones . heres a test i did out of curiosity to how much presure a 1 gallon can will stand up to. it was pumped up in 10 lb increments till it burst at 50 psi . the only thing that gave was the crimped top heres the results needless to say it was behind a concrete wall when i blew it up

 

[Nimbus]

If you're dicing with death in this manner, it's much safer to fill the container with water before you pump it up then there's only a small amount of compressed matter to explode.

 

[brightspark]

If you're dicing with death in this manner, it's much safer to fill the container with water before you pump it up then there's only a small amount of compressed matter to explode.

im well aware of hydraulic testing of boilers and cylinders. it was done more out of curiosity using thin metal and a bad design as to what pressure it would take to blow

 

[mike os]

im well aware of hydraulic testing of boilers and cylinders. it was done more out of curiosity using thin metal and a bad design as to what pressure it would take to blow

so playing, in other words..... slack day?

on a slightly more serious note.... if you think your compressor is dodgy... get it tested or get a new one...

Hydraulic testing has been covered somewhere here I think?

 

[brightspark]

so playing, in other words..... slack day? it was funny and satisfied my curiosity as to what pressure they would take . the top traveled 10 yards and went with a good bang

 

[Robotstar5]

it was funny and satisfied my curiosity as to what pressure they would take . the top traveled 10 yards and went with a good bang

I bet your neighbours love you "what's he gonna do next?"

 

[brightspark]

I bet your neighbours love you "what's he gonna do next?"

i havent got any neighbours the nearest is 100 yards away a few wild rabbits and the odd fox come near . they dont mind
:

 

[Robotstar5]

i havent got any neighbours the nearest is 100 yards away a few wild rabbits and the odd fox come near . they dont mind
:

Is that due to the blast radius from the great 1987 experiment that demolished surrounding properties?

 

[brightspark]

Is that due to the blast radius from the great 1987 experiment that demolished surrounding properties?

wish id filmed it and put it on u tube .but i was hiding in garage when increasing pressure. all i heard was the bang

 

[Shox Dr]

Reminds me of the time when I was a kid, helping around the farm, the "adults" built a compressor to run off a PTO on the back of an old Dextor; the tank made from a large Propane tank, unsure as to whether it would hold, they drove it into a field engaged the PTO, and we all retreated to hide behind a large tree.

It seemed an age before we heard the relief valve blow

 

[hotrodder]

http://weldingweb.com/showthread.php?t=48232

 

[brightspark]

http://weldingweb.com/showthread.php?t=48232

lol do u realy believe all that damage was done just look at all the crap and filth in the house tv s fridges junk tool ive seen less damage done with a campin gaz bottle blown up sat on an electric cooker after a powercut

 

[hotrodder]

Do you really believe that messing about with endoscopes and hydrostatic testing is a waste of time and that tapping something with a hammer is just as valid and safe?

anyone worrying about there comp tank generaly if there rusty on the bottom they may pinhole after years of use an easy way to check for any serious problems is turn it upside down and tap along the base with a hammer .if theres no dents apear the metal will be good and tank should be sound and safe to use

 

[brightspark]

Do you really believe that messing about with endoscopes and hydrostatic testing is a waste of time and that tapping something with a hammer is just as valid and safe?

excuse me did i mention they were a waste of time .your words not mine . how many people on here have compresors and home made tanks and how many have ever got them tested ?? probably none and how many have taken the plugs out and looked inside . i have with my comps

 

[the artfull-codger]

boys having fun[safely ''of course''!!]

wish I'd been there to see the can blow up brightspark,reminds me of when we were lads & used to make ''pipe bombs'' with weedkiller & sugar till they put an additive in the weedkiller!![spoilsports] I made a compressor out of a clayton dewandre airbrake pump from a ''green goddess'' mounted on a propane bottle about 38 yrs ago & as you suggested I did your ''non destructive hammer test'' & it's still going strong, my tecalemit compressor is older than that,as you say things were over engineered then,not like some of these high revving aluminium direct coupled from the motor compressors you get now.

slan go fol

 

[Nimbus]

well if you're just playing... http://users.frii.com/bsimon/backyard.html ... how much fun can you have with hairspray and plumbing supplies...?