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Technical Discussions
Amedeo Marino
Amedeo Marino
01:05 Mar-30-2000
Ultrasonic stress control of stay bolts in petrochemical items

Has anyone heard about an UT testing system for stress monitoring of stay bolts (screw stay) in petrochemical items such as heat exchanger, etc...
It seems that only two equipments exist: one of Krautkramer and one of a Belgian Company (STF).
Does anyone have any information about that ?
Thank you.


 
 Reply 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 528

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
528
03:51 Mar-30-2000
Re: Ultrasonic stress control of stay bolts in petrochemical items
I Think the Belgian company you mean is SDT
We sell it in the UK
There is a mention on our web-page (www.sonatest-plc.com) more on their own site.

USA company is on www.sdt-usa.com

I dont think KK do this equipment, but their sister company stresstel used to.

Joe


: Has anyone heard about an UT testing system for stress monitoring of stay bolts (screw stay) in petrochemical items such as heat exchanger, etc...
: It seems that only two equipments exist: one of Krautkramer and one of a Belgian Company (STF).
: Does anyone have any information about that ?
: Thank you.




 
 Reply 
 
Rolf Diederichs
Director,
NDT.net, Germany, Joined Nov 1998, 612

Rolf Diederichs

Director,
NDT.net,
Germany,
Joined Nov 1998
612
00:20 Mar-31-2000
Re: Ultrasonic stress control of stay bolts in petrochemical items
Krautkramer has developed a semi-automated eddy current testing
device for the inspection of Inconel wheel tie bolts.

More Details in
NDT Times Fall/Winter 98/99
Eddy Current Testing Edition
Volume 3, Number 1
http://www.krautkramer.com/company%20publications/NDTimes/Eddy%20NDT.pdf


----------
: Has anyone heard about an UT testing system for stress monitoring of stay bolts (screw stay) in petrochemical items such as heat exchanger, etc...
: It seems that only two equipments exist: one of Krautkramer and one of a Belgian Company (STF).
: Does anyone have any information about that ?
: Thank you.




 
 Reply 
 
Nick Welland
Nick Welland
01:57 Mar-31-2000
Re: Ultrasonic stress control of stay bolts in petrochemical items
: Has anyone heard about an UT testing system for stress monitoring of stay bolts (screw stay) in petrochemical items such as heat exchanger, etc...
: It seems that only two equipments exist: one of Krautkramer and one of a Belgian Company (STF).
: Does anyone have any information about that ?
: Thank you.

If it does not have to be UT, have a look at TSC's ACSM technique (electromagnetic).
they are at
http://www.tscuk.demon.co.uk
Nick



 
 Reply 
 
Dave Jankowski
Dave Jankowski
05:59 Apr-07-2000
Re: Ultrasonic stress control of stay bolts in petrochemical items
StressTel has been manufacturing instrumentation to monitor bolt stress for over 20 years.

check out their website at: www.stresstel.com for details



 
 Reply 
 
Wolfgang Bisle
Wolfgang Bisle
09:17 May-03-2000
Re: Ultrasonic stress control of stay bolts in petrochemical items
Have you ever heard from the companies UltraFast and Ultracoat?
They have a nice "Smartsensor" solution for your Problem I guess. We use their system for Full-Scale-Fatigue-Tests of aircrafts to monitor stress in bolts within the running time of the test.
The system uses bolts, which will be coated with a piezo-sensor-film which can be read out with portable electronic, determining the stress with a sophisticated algorithm.
see their homepages www.ultrafast.com or www.ultracoat.de
This is only an idea; I am not familiar with your applications so it could be no recommendation....
Wolfgang Bisle


 
 Reply 
 
Geoffrey Rowe
Geoffrey Rowe
02:04 Feb-26-2001
Re: Ultrasonic stress control of stay bolts in petrochemical items
Mr. Marino,
As you know, a torque wrench is not an accurate "tension wrench". There is a new ultrasonic technology for measuring bolt tension. NASA used this new technology on its Space Station bolts.

You may want to see the following web pages for more information.
http://arvc.com/SureBolt.htm
http://arvc.com/see_animation.htm


Thank-you for your interest,

Geoff Rowe
American Remote Vision Corp.


: Has anyone heard about an UT testing system for stress monitoring of stay bolts (screw stay) in petrochemical items such as heat exchanger, etc...
: It seems that only two equipments exist: one of Krautkramer and one of a Belgian Company (STF).
: Does anyone have any information about that ?
: Thank you.




 
 Reply 
 

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