MAOP = (2St / D) F
where: S = SMYS(psi)
D = dia(in)
t = wall thickness(in)
F = design factor
If Corrosion < 20% of Wall thickness
As we have discussed, the PRCI report prepared under Contract No, PR 3-805 was the basis and background for RSTRENG. The initial work was based on 86 burst tests, and subsequent to the generation of RSTRENG, an additional 82 burst tests were evaluated to continue the validation of RSTRENG. A significant number of these additional tests were performed on pipe that had the corrosion-simulating grooves machined.
This continued validation effort is presented in the PRCI report prepared under Contract No. PR 218-9304, “Continued Validation Of RSTRENG”, by Kiefner, Vieth, and Roytman. This report (Ref 8) is intended to provide qualitative validation to define applicability and limitations and quantitative validation to compare actual with predicted pipe failure pressures.
The continued validation efforts included comparing predicted test failure pressure using RSTRENG against actual failure pressures for the: