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Re: [MW:25707] thickness on painted vessel

By Materials & Welding
Dear Kumar,

If the vessel is not coated from inside the thickness can be measured from inside too. For small bore nozzles also you get special probe which can be used to check the thickness of Pipe wall. However coming back to your question whether UT can be performed after painting my answer is NO using a conventional UT machine with zero degree probe. How ever you can use thickness gauging machine to check the wall and there are machines which can be used where the DFT is upto 2000 microns especially used for marine applications.

Regards,

Nitin Shetty.

Regards,

Nitin Shetty

On Mon, Nov 14, 2016 at 6:56 PM, Kumar <sk7920541@gmail.com> wrote:
Dear Experts,

Greetings.

Just expecting your views for the UT- thickness measurements on a
painted pressure vessel (shell thick 54 mm & head 65mm) painting
thickness -250 microns. material SA 516 Gr. 70 N.

The construction phase is going on but few vessels are painted but
baseline thickness measures to be taken. Awaiting valuable feedbacks
pl.

Thanks in advance,

Kumar.

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