ASTM A388 UT requirement per API 613 5th edition for rotating elements

[LT Lewis]

I have a current project with the subject requirement. My issue is the rotating element have been machined and have gear teeth on them. Is there any other non-destructive examination, possibly x-ray, that will certify the material to meet the intent of A388?

 

[LT Lewis]

Does anyone have history using immersion UT for my current issue?

 

[EdStainless]

It makes the testing much more involved but it should still be able to be done.
Was the starting stock UTed?

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P.E. Metallurgy, Plymouth Tube

 

[LT Lewis]

The UT was missed at the foundry after rough turn so no UT has been performed on the parts.

 

[EdStainless]

Shaped probes, hand scanned, taking a lot of time and money.
Make sure to bill the guy that missed the UT (or that went ahead and accepted it).

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P.E. Metallurgy, Plymouth Tube

 

[MagBen]

Almost no possible to run immersion UT on such complex shaped part. You could do contact UT, but as pointed out, very time consuming. If replacement of X-ray satisfies the spec., go for it. Much easy and quick if not digital document is required.

 

[LT Lewis]

guys,
thanks much for your input. I will present to customer.

 

[MagBen]

A388 doensot specify the quality levels. we often use .125'' FBH, which is a D8 hole, the loosest criteria I have even seen for wrought material. so this spec. can be very lousy, x-ray could be an over kill. Also, the spec. indicates UT before machining as below:
9.1.2 Perform the ultrasonic examination after heat treatment for mechanical properties (exclusive of stress-relief treatments) but prior to drilling holes, cutting keyways, tapers, grooves, or machining sections to contour