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[MW:27881] Re: water fill up test after painting of storage tank

By Materials & Welding
Dear John,
Practically yes, if the weld has a small pinhole, leakage will be in the form of sweating only rather than dripping. if you coat it with 500 microns of paint, some times it is very hard to locate such type of leaks....Because of this even some specification quotes that only primer of 50 micron approximately to be applied, no further coats can be done until finish of HT.

Regards,
Kiran

On Monday, April 23, 2018 at 5:52:28 AM UTC+3, John Manoj wrote:
Dear expert.

We have one proposal to do water fillup test after internal and external painting of water tank which is fabricated as per API 650.
Internal paint : 300 micron  polyamine cured novolac epoxy coating.
External : 205 micron paintining.

Is it possible to do water fillup test after painting,

Thanks in advance,
Manoj.


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