Coating breakdown: DnV RP F103 vs. DnV RP B401

[DudePipeliner]

the coating breakdown coefficients (a and b) in DnV-RP-B401 where in order of 0.1 and 0.01.
these coefficient are remained unchanged in new revision of B401.
on the other hand, the DnV-RP-F103 proposes very different coefficients, which are in order of 0.001 and 0.0001; which leads to very light anodes.
What is the problem? It doesn't seem to be correct and I smell a rat in this approach???

 

[SJones]

Same answer to the same question that you also posted in the offshore structure/pipeline engineering forum!!

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04