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Teletest
Teletest Focus+ was the first system to use long-range guided wave ultrasonic testing to detect corrosion in pipelines.

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Technical Discussions
Matthew Cook
Matthew Cook
02:24 May-30-2003
broad swath ultrasonic thickness testing of ships hulls

NDT folks,

I am looking for a NDT method of performing "full coverage" thickness testing of ships hulls. I need to be able to detect localised corrosion of the inside of a vessels hull by performing an outside scan. The ideal systems would provide 100% coverage of the submerged hull.

Any info/advice will be very appreciated.


    
 
 Reply 
 
Nick Welland
Nick Welland
01:03 May-31-2003
Re: broad swath ultrasonic thickness testing of ships hulls
: NDT folks,
.
: I am looking for a NDT method of performing "full coverage" thickness testing of ships hulls. I need to be able to detect localised corrosion of the inside of a vessels hull by performing an outside scan. The ideal systems would provide 100% coverage of the submerged hull.
.
: Any info/advice will be very appreciated.
.
I believe Det Norske Veritas developed an ROV to do this a couple of years ago.
Regards
Nick


    
 
 Reply 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 278

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
00:21 Jun-01-2003
Re: broad swath ultrasonic thickness testing of ships hulls
DNV did develop a version of their Corroscan system a numbe rof years ago for this application. it was relatively slow but marinised well. Physical Acoutsics/NDT Automation have developed a Large AREA UT C-Scan system which uses a stand off probe ideal for large resolution scanning but may need marinisation.

We successfully deployed scanning mechanisms for inspecting the bottom of captive tanker hulls for internal corrosion a number of years ago.

For more information contact me direct.



    
 
 Reply 
 
Richard Kazares
Richard Kazares
04:17 Jun-02-2003
Re: broad swath ultrasonic thickness testing of ships hulls
Test message

: : NDT folks,
: .
: : I am looking for a NDT method of performing "full coverage" thickness testing of ships hulls. I need to be able to detect localised corrosion of the inside of a vessels hull by performing an outside scan. The ideal systems would provide 100% coverage of the submerged hull.
: .
: : Any info/advice will be very appreciated.
: .
: I believe Det Norske Veritas developed an ROV to do this a couple of years ago.
: Regards
: Nick
.



    
 
 Reply 
 
ishbel
Consultant, Engineering Consultant - NDT
Subsea 7, Norway, Joined Nov 1998, 11

ishbel

Consultant, Engineering Consultant - NDT
Subsea 7,
Norway,
Joined Nov 1998
11
09:40 Jun-06-2003
Re: broad swath ultrasonic thickness testing of ships hulls
: DNV did develop a version of their Corroscan system a numbe rof years ago for this application. it was relatively slow but marinised well.

The system DNV developed was a resonance system (not ultrasonics) using low frequency sound travelling through water (not actually based on Corroscan, which itself is based on the Pscan). The system is fast, and is mounted onto a very agile ROV. The company now supplying the service is ARGUS-RTM, and more details can be found at
http://www.oceaneering.com/printpages/oilfield/rov/crawler.htm

Ishbel


    
 
 Reply 
 
Asad
Asad
00:57 Nov-16-2006
Re: broad swath ultrasonic thickness testing of ships hulls
Dear?
I am sending you the proper link which will solve your problem.... please go to http://www.ndtpace.com
regards,
Asad
asadarizvi@yahoo.com
info@ndtpace.com

: NDT folks,
.
: I am looking for a NDT method of performing "full coverage" thickness testing of ships hulls. I need to be able to detect localised corrosion of the inside of a vessels hull by performing an outside scan. The ideal systems would provide 100% coverage of the submerged hull.
.
: Any info/advice will be very appreciated.
.



    
 
 Reply 
 
Asad
Asad
01:02 Nov-16-2006
Re: broad swath ultrasonic thickness testing of ships hulls
Dear?
I am sending you the link which will solve your problem....please visit http://www.ndtpace.com
regards,
Asad
asadarizvi@yahoo.com
info@ndtpace.com

: : NDT folks,
: .
: : I am looking for a NDT method of performing "full coverage" thickness testing of ships hulls. I need to be able to detect localised corrosion of the inside of a vessels hull by performing an outside scan. The ideal systems would provide 100% coverage of the submerged hull.
: .
: : Any info/advice will be very appreciated.
: .
: I believe Det Norske Veritas developed an ROV to do this a couple of years ago.
: Regards
: Nick
.



    
 
 Reply 
 

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