Re: [MW:4817] UT for IBR

dear all!

ibr allows you if you requested, thru letter, prior to do so..

please check with IBR 1950 regulation 265[b] and 360[f] for resolve your problem.

On Tue, Apr 13, 2010 at 12:31 AM, Mircea Raican <mircearaican@yahoo.com> wrote:

Hi Ramesh,

Referring the UT of IBR drum, some brief considerations I hope will be helpful for you :

1. UT and RT are complementary and the best result is when you use the both;

2. For 100 mm thickness, UT achieves a better sensitivity than RT, especially for higher angled planar discontinuities, but lower (acceptable) accuracy in discontinuity sizing and diagnosis;

Some minimum conditions are necessary for a well done UT:

1. Base material and filler material: close-grained unalloyed steel (or alloyed, but non-austenitic);

2.UT procedure containing (preferably) well known reference documents (ASME, EN, etc.) for UT technique and specific acceptance criteria agreed by client and/or national regulations (if pressure vessel, for example);

3. NDT (UT) certified and authorized personnel, at least level 2, according to (preferably) recognized standards (SNT-TC-1A, EN 473, etc.);

4. Calibrated ultrasonic instruments, transducers, reference blocks, etc.;

5. Part configuration enables the required directions of ultrasonic testing and assures the width of scanning area;

6. Scanning surface conditioning is necessary.

Note: If IBR material is austenitic steel or other coarse-grained steel, UT can be possible but RT is better.

--- On Sat, 4/10/10, Ramesh Barot <rameshnbarot@yahoo.com> wrote:

From: Ramesh Barot <rameshnbarot@yahoo.com>
Subject: [MW:4779] UT for IBR
To: "Materials Welding" <materials-welding@googlegroups.com>
Date: Saturday, April 10, 2010, 11:18 AM

Dear All,

IBR allows for ut?

MY case is 100mm thk steam drum. I want to do RT of upto 15mm for saving time and after that I want to clear it by UT, is it possible?

IBR allows for this?

Thanks,
With Best Regards,
Ramesh Barot

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