Re: [MW:4818] Radiographic film interpretation

Greeting All,

As understand from the information provided, its look like gas pocket .do the transverse scan you will find the increase in amplitude. (Scanning movement F as per API RP 2X).it is normal; many times we find such type of defect.

There is no acceptance/ rejection criteria depend on the density for radiography. What is code of constriction?

Some details like welding procedure and reference sensitivity for UT calibration will helpful to judge the situation.

Also when you repair this try to observe the defect this will be lesson learn for future.

 

Regards, Bhaskar Kale

On Thu, Apr 15, 2010 at 10:46 PM, Shashank Vagal <nach_sam@yahoo.com> wrote:

Hi all, In one RT film we have a 10-12 mm spot with density 3.13. The weld density is 3.17 and the parent metal density is 3.3. It is apparently interpass LoF in the 2nd fill pass after hot pass (confirmed by UT, where the indication ht is approx 20%of DAC). Is there any or what is the criteria for acceptance/rejection based on density difference? Rgds, Shashank Vagal

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