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- since 1996 -

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Technical Discussions
Sunil Ramchandran
Sunil Ramchandran
04:20 Jul-30-2007
Re: NDT Under Piping Supports
Is there any POTENTIAL technology for this application?

EMAT?, GUL? Digital RT?


----------- Start Original Message -----------
: Can anyone comment on the latest PROVEN technologies for testing Magnetic and Non-Magnetic piping directly under the pipe supports?
: Thanks.
------------ End Original Message ------------




    
 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
05:14 Jul-30-2007
Re: NDT Under Piping Supports
Sunil

Have you spoken to Shell Global Solutions who market their Pipe Support Tool (PST):

http://www.shell.com/static/globalsolutions-en/downloads/industries/gas_and_lng/brochures/pipe_cor.pdf
Regards

Nigel

----------- Start Original Message -----------
: Can anyone comment on the latest PROVEN technologies for testing Magnetic and Non-Magnetic piping directly under the pipe supports?
: Thanks.
------------ End Original Message ------------




    
 
 Reply 
 
Borja Lopez
Director
Innerspec Technologies, USA, Joined Jun 2002, 36

Borja Lopez

Director
Innerspec Technologies,
USA,
Joined Jun 2002
36
09:18 Jul-30-2007
Re: NDT Under Piping Supports
Our company has developed a system that provides under pipe support inspection from the top (axial scanning) and from the side (circumferential scanning).

See details below

http://www.innerspec.com/site/Ti-P.asp

----------- Start Original Message -----------
: Sunil
: Have you spoken to Shell Global Solutions who market their Pipe Support Tool (PST):
: http://www.shell.com/static/globalsolutions-en/downloads/industries/gas_and_lng/brochures/pipe_cor.pdf
: Regards
: Nigel
: : Can anyone comment on the latest PROVEN technologies for testing Magnetic and Non-Magnetic piping directly under the pipe supports?
: : Thanks.
------------ End Original Message ------------




    
 
 Reply 
 
Ingo Becker
Engineering, NDT Inspector & Sales
ec-works GmbH, Germany, Joined Apr 2000, 29

Ingo Becker

Engineering, NDT Inspector & Sales
ec-works GmbH,
Germany,
Joined Apr 2000
29
09:23 Jul-31-2007
Re: NDT Under Piping Supports
Dear Sunil,

you may also try to contact Verkade NDT Service. They and their UT pipe support inspection services have been checked by many clients and Shell Global Solutions as the most accurate system with regards to the evaluation of the remaining pipe wall thickness under the support plate. Verkade NDT Services is a Dutch/German Service company, but they perform their services worldwide. Ask for Hans Verkade.

Verkade NDT Services GmbH
Fon: +49 5931 17312
Fax: +49 5931 14731

Best regards

Ingo
----------- Start Original Message -----------
: Can anyone comment on the latest PROVEN technologies for testing Magnetic and Non-Magnetic piping directly under the pipe supports?
: Thanks.
------------ End Original Message ------------




    
 
 Reply 
 
Mark Potter
R & D
Sonemat Ltd., United Kingdom, Joined Sep 2007, 7

Mark Potter

R & D
Sonemat Ltd.,
United Kingdom,
Joined Sep 2007
7
09:52 Jul-31-2007
Re: NDT Under Piping Supports
To add to the list, EMAT Technologies have just introduced a system using a motorised robot for this purpose (http://www.emattechnology.com/index.html)

Mark.



    
 
 Reply 
 
Thomas Vogt
R & D, - -
Guided Ultrasonics Ltd, United Kingdom, Joined Apr 2007, 22

Thomas Vogt

R & D, - -
Guided Ultrasonics Ltd,
United Kingdom,
Joined Apr 2007
22
02:08 Jul-31-2007
Re: NDT Under Piping Supports
----------- Start Original Message -----------
: Is there any POTENTIAL technology for this application?
: EMAT?, GUL? Digital RT?
:
: : Can anyone comment on the latest PROVEN technologies for testing Magnetic and Non-Magnetic piping directly under the pipe supports?
: : Thanks.
------------ End Original Message ------------


Hi Sunil

Yes you can use GUL to screen pipe supports, whether magentic or non-magnetic doesn't matter.

Especially simple supports are straightforward. The key is that, on a long line, you can screen several supports at once. If one is found to be suspicious you can go and do follow-up inspection on that particular one. This is very useful when testing pipes in difficult (or expensive, time-consuming) to access areas, for example overhaed pipe racks.

Longitudinally welded supports are also possible but the range is reduced meaning you can screen less supports in one go. More involved interpretation techniques are available to deal with these types of supports.

To my knowledge the PST tool and similar ones on the market are just as qualitative as guided waves as they don't give an exact measurement of wall thickness. These systems are mostly transmission based, and welded supports are also more difficult because the support gives rise to a big reflection. I can also see the consistency of transducer coupling when scanning along the support to get the amplitude profile being an issue.

I don't know of a truly quantitative technique measuring wall thickness under the support which does not involve lifting the pipe but would be glad to hear if somebody knows of one.

Hope this helps.
Regards,
Tom


    
 
 Reply 
 
Sunil Ramchandran
Sunil Ramchandran
09:02 Jul-31-2007
Re: NDT Under Piping Supports
Thank you for all of the input. There's a lot of information to review on this topic.

Thanks again.
Sunil


    
 
 Reply 
 

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