Hi,

Please could someone help answer the following CAESAR II related question?

I have a requirement to model a riser (to DNV code) using CAESAR II and have to account for an internal corrosion allowance of 1mm but also 6mm external allowance. Looking at the way CAESAR II is set up, there is only one input box for corrosion which I assume is only for internal. If this is the case, can someone explain how I should account for the 6mm external corrosion allowance?

My thoughts were to do one of the following:-

1. Add 6mm to the input corrosion box making the corrosion 7mm in total (not sure if this is technically correct)

2. Reduce the pipe OD by 6mm and keep the corrosion input box as 1mm for internal.

Any thoughts / advise would be much appreciated.