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509 views
00:26 Jul-13-1999

Khazali Zin

Researcher
SIRIM BERHAD,
Malaysia,
Joined Nov 1998
3
Measurement of Hydrogen attack in steel pipe

Can anyone help me to suggest the most accurate ultrasonic procedure to measure
the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I
assume that attenuation measurement, backwall echo measurement or
velocity measurements(thus the poisson ratio) can be used but I am now sure of thier
accuracy? Is there any acceptance and rejection criteria for
evaluating the severity level of this hydrogen attack?

Your urgent reply is highly appreciated.
Thank you.


 
02:56 Jul-13-1999

David Hermanutz

Consultant,
Hbndt.com,
China,
Joined Jul 2012
85
Re: Measurement of Hydrogen attack in steel pipe : Can anyone help me to suggest the most accurate ultrasonic procedure to measure
: the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I
: assume that attenuation measurement, backwall echo measurement or
: velocity measurements(thus the poisson ratio) can be used but I am now sure of thier
: accuracy? Is there any acceptance and rejection criteria for
: evaluating the severity level of this hydrogen attack?

: Your urgent reply is highly appreciated.
: Thank you.


AEA technology have done a lot of good work in this area utilizing TOFD,
try Jan.Verkooijen@aea-technology.nl



 
02:32 Aug-11-1999
Brian Shannon
Re: Measurement of Hydrogen attack in steel pipe : : Can anyone help me to suggest the most accurate ultrasonic procedure to measure
: : the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I
: : assume that attenuation measurement, backwall echo measurement or
: : velocity measurements(thus the poisson ratio) can be used but I am now sure of thier
: : accuracy? Is there any acceptance and rejection criteria for
: : evaluating the severity level of this hydrogen attack?

: : Your urgent reply is highly appreciated.
: : Thank you.

:
: AEA technology have done a lot of good work in this area utilizing TOFD,
: try Jan.Verkooijen@aea-technology.nl

Suggest you contact iesconde.com for further information regarding this mechanism.


 


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