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- since 1996 -

Ultrasonic Sciences Ltd
We specialize in the design and manufacture of automated and semi-automated ultrasonic testing systems, including multi axis, multi channels systems and phased array electronics.
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Technical Discussions
AMIRI
Consultant, NDT/QC/WELD INSPECTION
Iran, Joined Nov 2005, 20

AMIRI

Consultant, NDT/QC/WELD INSPECTION
Iran,
Joined Nov 2005
20
05:45 Jul-14-2007
Minimum Thickness for UT

Dear Friends,
What is the minimum effective thickness for UT of welding in pressure vessel by Angle probe (single crystal) and common portable flaw detector?


    
 
 Reply 
 
chris s
chris s
07:50 Jul-17-2007
Re: Minimum Thickness for UT
----------- Start Original Message -----------
: Dear Friends,
: What is the minimum effective thickness for UT of welding in pressure vessel by Angle probe (single crystal) and common portable flaw detector?
------------ End Original Message ------------

What can you prove with your procedure


    
 
 Reply 
 
N.Kuppusamy
Consultant, NDT Level-III Engineer
Advanced Inspection & Testing (S) Pte Ltd, Singapore, Joined Dec 2003, 34

N.Kuppusamy

Consultant, NDT Level-III Engineer
Advanced Inspection & Testing (S) Pte Ltd,
Singapore,
Joined Dec 2003
34
00:09 Jul-28-2007
Re: Minimum Thickness for UT
Please refer ASME Section V, Article-4 and 5.

Practically I limit myself to 10mm as a minimum thickness and I prefer to use 80 degree shear wave probe along with usual 70 degree probe for 10mm thickness.

AWS D1.1 states 8 mm as a minimum thickness and any weld less than that may be tested using specific test procedure established using sufficient number or mock-up welds of same thickness containing anticipated type of defects at various depths.

Regards,



    
 
 Reply 
 
G.Madhesan
G.Madhesan
01:50 Aug-22-2007
Re: Minimum Thickness for UT
Dear Mr.Amiri,
From 8mm you can do UT by angle probe with single crystal.
----------- Start Original Message -----------
: : Dear Friends,
: : What is the minimum effective thickness for UT of welding in pressure vessel by Angle probe (single crystal) and common portable flaw detector?
: What can you prove with your procedure
------------ End Original Message ------------




    
 
 Reply 
 
sivabalan
sivabalan
05:06 Aug-25-2007
Re: Minimum Thickness for UT
Gents,
UT - Make your equipment and your mind equipped before carrying out UT on particular job.
Quantify yourself whether your equipment & setup is capable to test the minimum requirements. for that u have to use calibration blocks, refernce blocks (with refernce to your job u r going to test), make a 1:1 diagram, equip your mind...
now it is practically possible to go for minimum thicknes and even complex geometry UT inspection.
----------- Start Original Message -----------
: : Dear Friends,
: : What is the minimum effective thickness for UT of welding in pressure vessel by Angle probe (single crystal) and common portable flaw detector?
: What can you prove with your procedure
------------ End Original Message ------------




    
 
 Reply 
 
Sanoj J Cruz
Sanoj J Cruz
07:57 Mar-19-2013
Re: Minimum Thickness for UT
In Reply to N.Kuppusamy at 00:09 Jul-28-2007 .

Dear Friends,
Let me know If the welding is fully penitration in 5mm thickness & inspection test plan from client is 100% UT.what is the procedure??? Is MPI enough???..

    
 
 Reply 
 

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