Mohamedhassanmido
Materials
Which code and procedure will be used to repair riveted tank to replace first course and bottom plates?
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riveted tank 1
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Mohamedhassanmido
Materials
It is old tank and has good state except first course and bottom plates and reconstruction will be very cost what is the solution?
LittleInch
Petroleum
Have you thought about internal lining, either steel or fibre glass?
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
gr2vessels
Mechanical
..or simply plastic lining like the bolted tanks (no bottom required).
Cheers,
gr2vessels
Cheers,
gr2vessels
LittleInch
Petroleum
Depends on your contents, the amount of damage / corrosion of the bottom and the bottom course. For water, you might be able to simply spray on a rubber film or insert a liner. If you provide a few more details (contents, size, extent of damage, etc, ) you might get some more interest.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
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One question is the structural integrity of the tank. If it's in danger of failure then spray-on liners and similar fixes won't do any good.
One question is, are there any regulatory requirements for inspection and repair of the tank. In the US, you may have federal or state regulations requiring tanks to be periodically inspected and/or maintained in accordance with API-653. If you're not in the US, that may not be the case, but any such requirements would need to be confirmed prior to doing any work.
Replacing the bottom and first ring of shell on a tank is a sizeable undertaking already. Prior to doing that, I would certainly look very closely at the cost of replacing it with a new tank. The new tank would be far preferable, even if the cost were comparable.
One thing I recall hearing from a certain old-timer was that doing any welding on a riveted tank could cause existing joints to start leaking that were not leaking before, and seal-welding those could cause other joints farther down to leak, etc. Another thing I recall hearing is that riveted tanks were not necessarily made with "weldable" steel, and welding could be more difficult because of that.
One question is, are there any regulatory requirements for inspection and repair of the tank. In the US, you may have federal or state regulations requiring tanks to be periodically inspected and/or maintained in accordance with API-653. If you're not in the US, that may not be the case, but any such requirements would need to be confirmed prior to doing any work.
Replacing the bottom and first ring of shell on a tank is a sizeable undertaking already. Prior to doing that, I would certainly look very closely at the cost of replacing it with a new tank. The new tank would be far preferable, even if the cost were comparable.
One thing I recall hearing from a certain old-timer was that doing any welding on a riveted tank could cause existing joints to start leaking that were not leaking before, and seal-welding those could cause other joints farther down to leak, etc. Another thing I recall hearing is that riveted tanks were not necessarily made with "weldable" steel, and welding could be more difficult because of that.
Amen to J.Stephen.... I agree ! If the cost of the new tank is twice as much as the repair, it is still worth it !
The first action that should be taken when dealing with an old leaking riveted tank is to get a cost estimate of a replacement tank.
There comes a time when it is necessary in the course of human progress.... to abandon old methods and embrace the future !
Some more information here
and here....
The first action that should be taken when dealing with an old leaking riveted tank is to get a cost estimate of a replacement tank.
There comes a time when it is necessary in the course of human progress.... to abandon old methods and embrace the future !
Some more information here
and here....
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