Could anyone please advise me on which Code or Standard has stated that the corrosion allowance does not need to be considered for the inner pipe of a double pipe exchanger?
Additional, I have an exchanger design consisted of a few series of double pipes. The inner pipe will be extended out of the outer pipe connected to flanges & U-bend to continue to another bank. For the channel part that are outside of the outer pipe i.e. the extended portion of inner pipe, the tubeside flanges and the U-bend pipe, do we need to consider corrosion allowance in my mechanical calculation?
Thank you,
yl0525
Additional, I have an exchanger design consisted of a few series of double pipes. The inner pipe will be extended out of the outer pipe connected to flanges & U-bend to continue to another bank. For the channel part that are outside of the outer pipe i.e. the extended portion of inner pipe, the tubeside flanges and the U-bend pipe, do we need to consider corrosion allowance in my mechanical calculation?
Thank you,
yl0525