CORROSION ALLOWANCE ACC. TO AD2000 1

[yigithan]

Hi Everyone ,

AD2000 B0 9.2.1 says you have to add 1 mm corrrosion allowance if you are using carbon steel .. But İM not sure is that neccesary? For example im designing an lpg or air tank t<30 mm and will be painted just from outside ( no protection from inside) am i have to add 1 mm corrosion allowance to min . thickness ? sometimes our customers wants vessel with carbon steel with 0 mm corrosion allowance ( no protection from inside ) is it imposible for AD2000?

 

[XL83NL]

AD 2000 B0 para 9.2.1 deals with wear allowance, not corrosion allowance. The 2 are not the same.

 

[r6155]

For AD 2000 “wastage” or “corrosive” is same concept for design purpose. In B0 9.2.2 see the term “corrosive” as allowance C2.
It does not matter, customers want C2=0 for wastage or corrosive.
User / Customer is responsible for the amount allowance C2=0 and shall be stated on the drawings
Put In drawings “C2= 0 decided by User /Customer”

Regards
r6155