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- since 1996 -

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Technical Discussions
Aquilino Barboza
Aquilino Barboza
02:37 Apr-02-2003
TOFD Ultrasonic System

Could anybody provide me the best source for purchasing a TOFD
ultrasonic system for evaluating HIC/SOHIC occurence on pressure vessel and pipelines up to 3" OD minimum in the LNG plant situated in an offshore environment. I've heard of Ultratek system from US, but I could not justify them fully to our Cost Control Department because there are other similar system available in UK which seems to be more commercially acceptable.
I believe that only those with vast experience on the use of this equipment could give a better appraisal as they would know the hidden weakness of various system available in the market.


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

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
06:18 Apr-03-2003
Re: TOFD Ultrasonic System
There are a huge number of companies offering TOFD Systems across a large range of capability and cost
TD-Scan from Technology Design
LSI From Physical Acoustics
Microplus From Veritec (used To Be AEA)
P.Scan From Force Institute
NB 2000 from AIS USA
Tomoscan from RD-Tech

to mention a few.

I think you need to consider whether TOFD is the best approach for HIC detection. I know some companies are claimimg its a good approach but if you look at the bulk of the recommendatiosn from NACE, API, MPC etc. High resolution C-Scan Mapping is the preferred and most common approach. You can also now inspect just as fast if not faster with many of the C-Scan Systems. The TOFD work I have seen needs to be backed up for reliable sizing with a Pulse/Echo approach anyway. Also TOFD displays of HIC are difficult to interpret meaning that the benefist of TOFD are lost with duplication.

If you have no experience with HIC it may be best to bring in a contractor using a system learn alongside them and then buy.


    
 
 
Mic
Consultant
AGM Techno consultants, India, Joined Jan 2003, 22

Mic

Consultant
AGM Techno consultants,
India,
Joined Jan 2003
22
04:26 Apr-04-2003
Re: TOFD Ultrasonic System
Dear : abarboza
I have personally used US ultratech The machine which you have stated. It is very easy to set up but some drawback in imaging TOFD for HIC detection.
for others I will stick to Mr. John replies to you.

Thanks.
Mic


    
 
 
Jim Knowles
Jim Knowles
07:07 Apr-04-2003
Re: TOFD Ultrasonic System
: Could anybody provide me the best source for purchasing a TOFD
: ultrasonic system for evaluating HIC/SOHIC occurence on pressure vessel and pipelines up to 3" OD minimum in the LNG plant situated in an offshore environment. I've heard of Ultratek system from US, but I could not justify them fully to our Cost Control Department because there are other similar system available in UK which seems to be more commercially acceptable.
: I believe that only those with vast experience on the use of this equipment could give a better appraisal as they would know the hidden weakness of various system available in the market.
.Please try Phoenix Inspection Systems Ltd, who supply a whole range of equipment and accessories.



    
 
 
Richard Kazares
Richard Kazares
08:29 Apr-04-2003
Re: TOFD Ultrasonic System

NDT Automation manufactures a wide range of automated UT system - including our Large Structure Inspection (LSI) System. This is a magnetically attached dual (can be configured as a single) axis system with interchangeable scanning heads - for TOFD (with supporting software), C-Scan based weld inspection (includes geometry corrected - dual-view software) and thickness mapping.

We have versions of this system that will operated on pipelines down to 2 3/4 inches (70 mm) in diameter.

Please visit our website - or contact me directly for more information.


: Could anybody provide me the best source for purchasing a TOFD
: ultrasonic system for evaluating HIC/SOHIC occurence on pressure vessel and pipelines up to 3" OD minimum in the LNG plant situated in an offshore environment. I've heard of Ultratek system from US, but I could not justify them fully to our Cost Control Department because there are other similar system available in UK which seems to be more commercially acceptable.
: I believe that only those with vast experience on the use of this equipment could give a better appraisal as they would know the hidden weakness of various system available in the market.
.



    
 
 
Angela Binks
Angela Binks
06:39 Apr-07-2003
Re: TOFD Ultrasonic System
We have prepared a proposal in response to an enquiry for the supply of a Microplus II Inspection System providing TOFD capabilities for the detection HIC/SOHIC.
Please contact me for a copy of the proposal, kindly note that in our previous life with AEA Technology we were the inventors of TOFD with 30 years + experience.

I look forward to hearing from you.


    
 
 
Rajiv Chaudhari
Director,
CALTECH ENGINEERING SERVICES, India, Joined Mar 2003, 13

Rajiv Chaudhari

Director,
CALTECH ENGINEERING SERVICES,
India,
Joined Mar 2003
13
08:07 Apr-08-2003
HIC/SOHIC crack measurements
We can provide instrument to detect HIC/SOHIC cracks using best NDT technique. The instrument can detect fine HIC / SOHIC cracks. For further details you may contact directly to me at caltech@vsnl.net

: We have prepared a proposal in response to an enquiry for the supply of a Microplus II Inspection System providing TOFD capabilities for the detection HIC/SOHIC.
: Please contact me for a copy of the proposal, kindly note that in our previous life with AEA Technology we were the inventors of TOFD with 30 years + experience.
.
: I look forward to hearing from you.
.



    
 
 
Claudio CENCE
Claudio CENCE
06:39 Apr-14-2003
Re: TOFD Ultrasonic System
Dear Sir,

Further to your e-mail, we inform you that we are provider of full TOFD equipment and also UT-TOFD testing supplier for Europe aeronautic and petrochemical industry. We are qualified by EXXON on evaluation of HTHA (High Temperture Hydrogen Attack) by ultrasonic method on pressured vesssel.

This process is based on TOFD detection and spectrum analysis.

We are ablt to supply you in the best financial and delivery time terms a complete system including UT equipment + TOFD probes + UT specification.

Please do not hesitate to contact us for more information or detailed quotation.

Phone : + 33 385 90 07 50
Fax : + 33 385 90 07 51
Website : www.metalscan.com

Best regards,

Claudio CENCE,
External intervention Manager.

: Could anybody provide me the best source for purchasing a TOFD
: ultrasonic system for evaluating HIC/SOHIC occurence on pressure vessel and pipelines up to 3" OD minimum in the LNG plant situated in an offshore environment. I've heard of Ultratek system from US, but I could not justify them fully to our Cost Control Department because there are other similar system available in UK which seems to be more commercially acceptable.
: I believe that only those with vast experience on the use of this equipment could give a better appraisal as they would know the hidden weakness of various system available in the market.
.



    
 
 
CENCE
CENCE
01:05 May-24-2003
Re: TOFD Ultrasonic System
: : Could anybody provide me the best source for purchasing a TOFD
: : ultrasonic system for evaluating HIC/SOHIC occurence on pressure vessel and pipelines up to 3" OD minimum in the LNG plant situated in an offshore environment. I've heard of Ultratek system from US, but I could not justify them fully to our Cost Control Department because there are other similar system available in UK which seems to be more commercially acceptable.
: : I believe that only those with vast experience on the use of this equipment could give a better appraisal as they would know the hidden weakness of various system available in the market.
: .Please try Phoenix Inspection Systems Ltd, who supply a whole range of equipment and accessories.
.
please try also METALSCAN.fr they are specialist in this technologie of equipment and software


    
 
 
SANDEEP A PAWAR
SANDEEP A PAWAR
02:59 Aug-03-2004
tofd method
hello friends,
first of all i must thank all the people who have been contributing to the discussion on TOFD technique.I am a mechanical engineering student from India.As per the curriculum ,I am required to give a seminar on any topic of interest...and I have selected TOFD techinque as my seminar topic.Just by going through all the discussions people have had over a period of time , I have gathered a lot of information and not only that it has further increased my interest in this field................
Plz if you have any information which you think might help me ...do send it to me..............

i am interested to know which of the companies in India at present use TOFD method for testing???

thanx.
sandeep a pawar
modern college of engineering , pune,
india


    
 
 

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