Ultrasonic on Incoloy 825 (cooler header) 1

[MadieKerang]

Hallo,

Just want to ask, can we perform UT on the incoloy material without calibrating it with incoloy 825 calibration block but using CS calibration block as a reference and then adjusting the wave velocity in the UT equipment itself as we know the wave velocity for incoloy 825.

Any reference code(s) which I can refer?

Cheers

 

[rustbuster]

You will need to qualify a procedure, not a great practice in my mind. What is the intent of the UT Examination.

 

[EdStainless]

Is this installed or new loose tubes?
You would come closer using a 316SS as a reference.

The real issue is that if you are looking for specific defects then you need to have a manufactured version of that in your ref piece for sizing. Otherwise you are only guessing.

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Plymouth Tube

 

[metengr]

Just want to ask, can we perform UT on the incoloy material without calibrating it with incoloy 825 calibration block but using CS calibration block as a reference and then adjusting the wave velocity in the UT equipment itself as we know the wave velocity for incoloy 825.

No.

 

[MadieKerang]

This cooler has been in service for almost 6 years, we have a big problem with driling mud coming from a new pipeline which caused erosion issue on the upstream equipments and debris collected on the downstream equipments. The intention is to do 100% UT just to check the pverall condition of the header.

So we have to look for standard reference block made from incoloy 825?

 

[metengr]

Are you talking about standard thickness testing or more enhanced UT?

 

[MadieKerang]

It is just standard thickness testing, similar like UT wall thickness measurement (spot UT).

 

[EdStainless]

All you need are some pieces of 825 sheet about the same thickness as your system. heck you could by corrosion test coupons if they are the right thickness.

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Plymouth Tube

 

[MadieKerang]

Edstainless....thanks..good idea atall..