Dear Eng. Mostafa,
If you wants the permanent record as it is the requirement of ASME Sec. VIII Div. 2 ....................
You have following two choices.
1. RT with CO 60 - Since It seems available to and fullfill ther requirement of Code.
As you mentioned you are worried about ineficiency of RT for 80mm.
You can do manual UT 100% weld length as per ASME section V - Article 4 prior to RT.
You can surely find all type of defects like Lack of fusions, cracks, Slags.
If the detected defects not acceptable in UT get them repaired. And for code requirement you can do RT for permanent Record.
2. Auto UT ToFD or Phased Array is the best choice for it and accepted by Code case 2239.
It may expensive and as you mentioned not easily available. If your job quantity is more you will get it and may be it will cheaper for you. But in this case you should find a company finalise the financial matters and then get the AUT procedure approved for your job. Qualification of AUT procedure is required. I can help you to find the NDT company providing the AUT services and write up the ToFD procedure. Contact me in this regards.
These are the two options.
Best Regards,
Nilesh Pathare.
On Wed, Dec 30, 2009 at 1:55 PM, Eng/ Mostafa Kamel Hussein <mkh_200@yahoo.com> wrote:
--I have material with 80mm thickness and it's known that RT is not applicable for application as NDT, so what is the substitute method for NDT and please give me the code case number for that?
Note1: the applied code ia ASME VIII Div II
Note2: If the substitute NDT is UT with permanent record but also it's difficult to get it what is substitute to get NDT with permanent record????
Eng/Mostafa Kamel
Senior Welding Engineer
SIEMENS
+20104410009
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