where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

ULTRASOUND INSTITUTE
The Ultrasound Institute can develop new advanced ultrasonic measurement, imaging and NDT techniques for non-conventional applications.

4255 views
Technical Discussions
Muhammad Hussain
Muhammad Hussain
15:26 Feb-01-2010
Sensitive Leakage detection

We are experiencing very minute leakage in our vertical type exchanger ( Urea Stripper) We are unable to detect the laekage, however during opertaion we know that the leakage is there ( conductivity of 35 micro siemen / cm).
We have tried Ammonia test as well as Helium leak test ( sniffer method) but without success. No of tubes is 2500 (approx)
Is there any other NDT technique to detect the leak , like radioactive tracer ( i dont much about it either)

    
 
 Reply 
 
Dent
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 248

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
248
16:43 Feb-01-2010
Re: Sensitive Leakage detection
In Reply to Muhammad Hussain at 15:26 Feb-01-2010 (Opening).

What product is in the exchanger? What direction is it leaking? (tube to shell or shell to tube)

How did you perform the Helium sniffer test? What pressure and concentration of He? What equipment did you use? Helium testing performed properly would be the best test. Was it dry before helium testing?
Contact me by e mail and maybe I can help.

    
 
 Reply 
 
Tuan Dang Dinh
Tuan Dang Dinh
12:14 Feb-02-2010
Re: Sensitive Leakage detection
In Reply to Muhammad Hussain at 15:26 Feb-01-2010 (Opening).

Hello Mr. Muhammad Hussain,

It is possible to detect leak of pressure/vacuum systems by ultrasonic condition monitoring. Please refer to Sonatest Soundscan 101 at bellow link:

http://www.sonatest.com/products/multi/soundscan/Overview.html

    
 
 Reply 
 
Tuan Dang Dinh
Tuan Dang Dinh
12:27 Feb-02-2010
Re: Sensitive Leakage detection
In Reply to Muhammad Hussain at 15:26 Feb-01-2010 (Opening).

Hello Mr. Muhammad Hussain,

It is possible to detect leak of pressure/vacuum systems by ultrasonic condition monitoring. Please refer to Sonatest Soundscan 101 at bellow link:

http://www.sonatest.com/products/multi/soundscan/Overview.html

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

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
18:12 Feb-07-2010
Re: Sensitive Leakage detection
In Reply to Muhammad Hussain at 15:26 Feb-01-2010 (Opening).

Place pressure on the shell side and then test each tube using the Physical Acoustics 9610 potable AE instrument. We have done this numeorus times including a 3600 tube condensor its fast and worked even when we could not find the leak by other methods.

    
 
 Reply 
 

Product Spotlight

AIS229 - Multipurpose Real Time System

Latest standard & automatic real time system developed by Balteau. The AIS229 has been designed to
...
do series inspection in a wide variety of industry. Composed of a shielded cabinet, 5 axis manipulator, x-ray generator and tubehead from 160kV to 225kV, a fl at panel & much more, the AIS229 is most certainly one of the most multipurpose RTR system available on the market.
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

Combination of Digital Image Correlation and Thermographic Measurements

The combination of measuring results from the digital image correlation (ARAMIS, DIC) and temperat
...
ure measuring data from infrared cameras permits the simultaneous analysis of the thermal and mechanical behavior of test specimens in the materials and components testing field.
>

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window