intelligent pig -Preferential Weld Root Corrosion
intelligent pig -Preferential Weld Root Corrosion
(OP)
Hi Guys,
The management raised concerns that the nickel content of welding consumables used in the construction of one of our gas Production Pipeline (1.5% Ni) may give rise to unacceptably high corrosion risks by promoting Preferential Weld Root Corrosion (PWC).
My question is : what will be the engineering justification to run the intelligent pig and is pigging the only solution?
I would rally appreciated your feedbacks!
Thank you
The management raised concerns that the nickel content of welding consumables used in the construction of one of our gas Production Pipeline (1.5% Ni) may give rise to unacceptably high corrosion risks by promoting Preferential Weld Root Corrosion (PWC).
My question is : what will be the engineering justification to run the intelligent pig and is pigging the only solution?
I would rally appreciated your feedbacks!
Thank you





RE: intelligent pig -Preferential Weld Root Corrosion
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: intelligent pig -Preferential Weld Root Corrosion
A profile / feeler pig may be more economical and provide better results.
RE: intelligent pig -Preferential Weld Root Corrosion
SJones: thanks
RE: intelligent pig -Preferential Weld Root Corrosion
RE: intelligent pig -Preferential Weld Root Corrosion
RE: intelligent pig -Preferential Weld Root Corrosion
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RE: intelligent pig -Preferential Weld Root Corrosion
RE: intelligent pig -Preferential Weld Root Corrosion
If the line is not buried, then the best inspection would be TOFD of the root region. It will show very clearly with an accurate maximum height measurement. But their must be good access to bare metal (or thinly coated) pipe surfaces adjacent to the weld.
Quick, reliable and effective.
RE: intelligent pig -Preferential Weld Root Corrosion