Repair procedure for Sump
Repair procedure for Sump
(OP)
Hi
I have noticed that there was a bulging in the sump area of storage Tank, and was found to be beyond permissible limit.
The sump is 1 meter in diameter and is in the center of storage tank which is 23 meter in diameter.
1.What could be the possible reason for the bulging?
2.Being an API 653 how to give method and plan of repair for this particular case?
Regards
Sood
I have noticed that there was a bulging in the sump area of storage Tank, and was found to be beyond permissible limit.
The sump is 1 meter in diameter and is in the center of storage tank which is 23 meter in diameter.
1.What could be the possible reason for the bulging?
2.Being an API 653 how to give method and plan of repair for this particular case?
Regards
Sood





RE: Repair procedure for Sump
RE: Repair procedure for Sump
Hi Bimr
Bulging out around the sump. Refer to the attachment.
Thanks
Sood
RE: Repair procedure for Sump
RE: Repair procedure for Sump
RE: Repair procedure for Sump
RE: Repair procedure for Sump
Foundation type is concrete foundation and asphalt layer(thk not known) is there between concrete foundaton and bottom plate.
And sand layer is there between concrete and sump walls for detecting leak.
There is no pole attached.
RE: Repair procedure for Sump
Is it possible that water froze and expanded under the tank?
RE: Repair procedure for Sump
RE: Repair procedure for Sump
If cutting the pole gives some good movement, put a thick enough baseplate under pole to push out the bulge.
If cutting the pole fails to move the sump, cut around the outer edge of the bulge. Have some floor-plate and oiled sand on hand and repair as necessary. Tank floors are simple -- don't overthink them.
And NEVER attach a pole to the roof + floor; one or the other only.
RE: Repair procedure for Sump
As the others said the pipe may be at fault but don't rule out a foundation fault. It's a good idea to free the gauge pole at the base but don't leave the pipe swinging. If it's out of the question to move it, provide it with slotted guides that will bolt everything together and allow for thermal expansion but keeping it from moving around.
It wouldn't hurt to MPI the sump flange seal weld. and inside corner.