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dnv RP B401 understandind the use of coating deterioration factor

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godel123

Petroleum
Joined
Jun 10, 2011
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51
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DZ
hi

the "fc" (coating deterioration factor) is used to find the final current density by using the formula :
if = i *fc*A (where "if" is the final current density and "i" the initial value , A is the surface area).
my ask is : initial current density is the value of bar surface ?
 
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