Corrosion
Corrosion
(OP)
Dear,
Can someone helps me to find/tell me where is the right procedure for the corrosion allowance selection in the ASME BPVC Section VIII of a compressed air receiver 400 litres/40 bar.
Regards.
Can someone helps me to find/tell me where is the right procedure for the corrosion allowance selection in the ASME BPVC Section VIII of a compressed air receiver 400 litres/40 bar.
Regards.





RE: Corrosion
For guidance see Nonmandatory Appendix E Suggested Good Practice Regarding Corrosion Allowance.
With that said corrosion allowance can be from 0.062" to as much as 0.125".
RE: Corrosion
Regards
r6155
RE: Corrosion
Is there a relationship between the corrosion allowance and material or/and wall thickness ?
Can you give me some example of a corrosion allowance for the air receiver ?
Regards.
RE: Corrosion
Corrosion allowance means thicker shell material, to compensate for general pitting, which means more weight and cost. So, proper design should consider expected service conditions. As far as a corrosion allowance number, it would be in the range I stated in the post above.
RE: Corrosion
works as corrosion allowance.
Regards
r6155
RE: Corrosion
RE: Corrosion
I agree with your comments about corrosion prevention on the lower vessel head.
But, I think that it is important to point out that there must be a functioning automatic drainage device on the bottom of the vessel and that it must be periodically inspected and maintained.
A ball valve on an automatic timer is a common choice.
http://www.ingersollrandproducts.com/ap-en/product...
Zmayda, is this the first air receiver design that you have been involved with ???
MJCronin
Sr. Process Engineer