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Tank repair...
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Rick_H
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I have a 275 gallon tank I was to repair for a small pinhole in the bottom. I got the tank and honestly was just floored, the pinhole is easy....but the abortion of a previous repair at the drain fitting is going to be some work. This is a mixing tank for a food product and no way am I letting it go back in service like this.

So the project begins.....
Attachments
Previous patch was good, the fitting however was an abortion and total failure
Previous patch was good, the fitting however was an abortion and total failure
IMG_20160601_230340068_HDR.jpg (41.58 KiB) Viewed 1374 times
Outside
Outside
IMG_20160601_230348698.jpg (28.84 KiB) Viewed 1374 times
Inside
Inside
IMG_20160601_231611550.jpg (57.69 KiB) Viewed 1374 times
Cut out all the crap and dent, going to fix this correctly
Cut out all the crap and dent, going to fix this correctly
IMG_20160601_231656.jpg (29.01 KiB) Viewed 1374 times
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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exnailpounder
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:shock: :o ....I could clench a torch in my ass crack and squat over the piece and make a better weld. Only ONE pinhole leak??? :lol:

Show us the before and afters Rick.
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
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Good grief, put JB Weld on the last welders Christmas List. At least the weld on the I-Line fitting looks good.
AWS D1.1 / ASME IX / CWB / API / EWI / RWMA / BSEE
Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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Rick_H
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Funny thing is the pin hole is in the bottom of the tank..lol

I got the 13g Stainless patch cut out last night, will be working on it tonight. I haven't decided yet if I am going to weld the new ferrule in first or patch then drill.
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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motox
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wouldn't know where to start to fix that neck.
maybe 50 ton crusher.
craig
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exnailpounder
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Heck...it probably just looks bad from the outside, I'm sure it was purged and passivated correctly :lol: What food company did that come from so I know what to avoid...Purina Dog Chow? :)
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
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Gotta like all the butt holes on that inside shot, yet it didn't leak :lol:
Richard
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DLewis0289 wrote:Good grief, put JB Weld on the last welders Christmas List. At least the weld on the I-Line fitting looks good.
Hey D, this guy wouldn't even get the grinder for Christmas, eh?
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Well it better be a Metabo, DeWalt would never last that guy.
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Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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Poland308
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Good thing you cut it all out there's no way you could figure out which hole was the leaker.
I have more questions than answers

Josh
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Rick_H
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Got the patch made and tacked in tonight....
Attachments
IMG_20160602_235306394_HDR.jpg
IMG_20160602_235306394_HDR.jpg (31.58 KiB) Viewed 1105 times
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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When i saw that previous fitting
Image
-Markus-
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motox
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rick
really nice fit on that patch.
bet that took some time to fit up.
craig
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exnailpounder
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I would just leave it the way it is and call it done...looks better and probably doesn't leak as bad :lol:
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exnailpounder wrote:I would just leave it the way it is and call it done...looks better and probably doesn't leak as bad :lol:

:lol: :lol: :lol: :lol: :lol: :lol: :lol:
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Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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Rick_H
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The fitting actually didn't leak..lol I was asked to repair a pinhole that was in the very bottom. I'm thinking it leaked at one time and someone just kept migging it till it stopped...

Thanks, yeah that patch tool a little bit of time but once I started tacking it in went pretty good, felt like a body man. I haven't decided yet if I'm going to weld and finish the patch then do he fitting, or do the fitting and weld it all. Weighing he pros and cons of that now..lol

Then I'll finally weld that pinhole up in he bottom.
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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Rick_H
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Markus wrote:When i saw that previous fitting
Image
Yeah pretty bad that someone didn't even consider it would hold a food product....luckily the product has a high level of alcohol so it most likely killed anything that lingered. The tank was not currently in service thank god.
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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I would do the patch first, fitting second. I am from the school the less I have to weld around the better. The other side of the coin, once everything is tacked in place it's just a welding party from that point. Personal preference.
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Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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Rick_H
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DLewis0289 wrote:I would do the patch first, fitting second. I am from the school the less I have to weld around the better. The other side of the coin, once everything is tacked in place it's just a welding party from that point. Personal preference.
You and I think alike....kinda scary :mrgreen:
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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Great minds think alike, and we both have probable learned the hard way of the do's and don't to make our life easier. I have worked my own self into a cussing on more than one occasion over the years.
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Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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Sandow
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Rick_H wrote:Got the patch made and tacked in tonight....
Are you going to have to purge that entire tank or can you get backside coverage some other way?

-Sandow
Red-hot iron, white-hot iron, cold-black iron; an iron taste, an iron smell, and a babel of iron sounds.
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Rick_H
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Sandow wrote:
Rick_H wrote:Got the patch made and tacked in tonight....
Are you going to have to purge that entire tank or can you get backside coverage some other way?

-Sandow
It's a portable tank with a removable lid so I can get to the back. I'll be welding it in shortly...
Attachments
IMG_20160603_200504.jpg
IMG_20160603_200504.jpg (19.8 KiB) Viewed 1110 times
IMG_20160603_222148.jpg
IMG_20160603_222148.jpg (92.33 KiB) Viewed 1110 times
IMG_20160603_222133.jpg
IMG_20160603_222133.jpg (33.56 KiB) Viewed 1110 times
Reg ferrule vs tank fitting
Reg ferrule vs tank fitting
IMG_20160603_222406.jpg (50.64 KiB) Viewed 1110 times
IMG_20160603_224124.jpg
IMG_20160603_224124.jpg (49.47 KiB) Viewed 1110 times
IMG_20160603_230213.jpg
IMG_20160603_230213.jpg (44.63 KiB) Viewed 1110 times
IMG_20160603_231600.jpg
IMG_20160603_231600.jpg (32.07 KiB) Viewed 1110 times
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
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exnailpounder
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Rick...what is your procedure for welding thin SS? Do you chill bar or do you stop pretty often to take out heat? I can't really tell from the pics how thick the metal is but I have seen stainless do some crazy warping without heat control. Yours looks nice and smooth. I can see a few stops and starts in your welds but not many.
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Freaking outstanding. You need to post the side by side pics of before and after lol.
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Scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality." Nikola Tesla
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texasnorm
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Finely found a weld that looks worse than mine!! :D
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