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 -
4594 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, 252

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
252
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, 280

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
280
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

UCI Hardness Tester NOVOTEST T-U2

UCI hardness tester NOVOTEST T-U2 is is used for non-destructive hardness testing of: metals and
...
alloys by scales of hardness: Rockwell (HRC), Brinell (HB), Vickers (HV); non-ferrous metals, alloys of iron etc., and using five additional scales for calibration; with tensile strength (Rm) scale determines the tensile strength of carbon steel pearlitic products by automatic recalculation from Brinell (HB) hardness scale.
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

SITEX CPSERIES

Teledyne ICM’s CPSERIES has been designed with a view to revolutionizing the handling and perfor
...
mances of portable X-Ray sets. Despite having managed to halve the weight of similar portable X-Ray generators available on the market (while continuing to provide the same power output), the SITEX CPSERIES generators feature a shutter, a laser pointer, a beryllium window, an aluminum filter and two integrated diaphragms (customized sizes are available upon request). Without compromising the robustness and reliability for which ICM products are renowned, the small size and light weight of the SITEX CPSERIES will radically change the way that you perform your RT inspections. And you will see a positive impact in terms of both quality and return on investment (ROI).
>

32:128PR PAUT & 2-ch TOFD Flaw Detector: SyncScan 2

●32:128PR PAUT with optional 2-ch TOFD to maximize your efficiency ●Support PR mode for corrosi
...
on inspection ●Multiple solutions for welds & corrosion ●Faster scan speed (Approximately 3 meters/minute) ●Light weight: 4kg only including battery
>

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