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Technical Discussions
Ashfaq Anwer
Engineering
Engro Chemical , Pakistan, Joined Jul 2007, 1

Ashfaq Anwer

Engineering
Engro Chemical ,
Pakistan,
Joined Jul 2007
1
05:18 Jan-18-2008
Ultrasonic Flaw Detection at High Temperature SS piping weld joints

We intend to perform UFD on SS lines weld joints while in operation (temperature ~ 200 deg C). I need help in identification of hardware (probes), accessories and method of performing UFD on SS weld joints. Anybody having such experience may guide me. I will be grateful.


    
 
 Reply 
 
UT Roscomm
UT Roscomm
07:52 Jan-24-2008
Re: Ultrasonic Flaw Detection at High Temperature SS piping weld joints
----------- Start Original Message -----------
: We intend to perform UFD on SS lines weld joints while in operation (temperature ~ 200 deg C). I need help in identification of hardware (probes), accessories and method of performing UFD on SS weld joints. Anybody having such experience may guide me. I will be grateful.
------------ End Original Message ------------

You cannot do it with any reliability due the the interface between the weld and parent metal.


    
 
 Reply 
 
Collin Maloney
NDT Inspector, - Plant Inspector
Applus RTD, Australia, Joined Nov 2000, 147

Collin Maloney

NDT Inspector, - Plant Inspector
Applus RTD,
Australia,
Joined Nov 2000
147
06:38 Feb-23-2008
Re: Ultrasonic Flaw Detection at High Temperature SS piping weld joints
----------- Start Original Message -----------
: : We intend to perform UFD on SS lines weld joints while in operation (temperature ~ 200 deg C). I need help in identification of hardware (probes), accessories and method of performing UFD on SS weld joints. Anybody having such experience may guide me. I will be grateful.
: You cannot do it with any reliability due the the interface between the weld and parent metal.
------------ End Original Message ------------

UFD of SS welds has been around for some time, see the IIW guide circa 1986. The testing at temperatures you are quoting, to my knowlege, is not possible. This is due to the probe design not able to withstand anything other than room temperature.



    
 
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