Scattered Pits in API 510

[Stallionbreed]

From an application standard, I understand the methodology for determining if scattered pits on a vessel can be ignored. However, I'm curious of the conceptual reason why these pits can be ignored if they follow the API 510 section 7.4.3. Can someone explain? Here is an article that describes the different methods:

https://inspectioneering.com/blog/2...-code-ffs-evaluation-of-widely-scattered-pits

 

[EdStainless]

The comment at the end of each of the three conditions when they are first stated in that article sum it up well.
Little risk of leak, LTA, or crack.

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P.E. Metallurgy, consulting work welcomed

 

[Stallionbreed]

Thank you!

 

[dik]

LTA?

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[EdStainless]

localized thinned (or thinning) area

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P.E. Metallurgy, consulting work welcomed

 

[dik]

thanks...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik