Just to be clear. I am not trying to increase the pressure above original design. I am trying to prove original design so I can operate near the original MAWP. My in house regulations require that the orignal calculations be proved if a copy of the originals are not available.
I have researched...
I am using the material strengths from the original drawing, not today's code. But, I am using today's formula's to apply the values. That is all I have to go by.
The corrosion is on the OD surface and is not very substantial, but I am in the process of collecting NDE measurements on it right...
I have a layered vessel from 1959 built to the Corps of Engineers Spec. DA-23-086 ENG 59-4 Volume II or III. I have to prove the MAWP of this vessel and evaluate areas of corrosion. All I have to go by is todays ASME Sec. VIII code. Using current calculations I cannot prove the design MAWP for...
