Why is a warning generated stating that API-650 Appendix P is intended for tanks more than 120 feet in diameter?
Appendix P was written from two technical papers, publishing the findings for two full scale tanks that were instrumented, tested, and verified by finite element analysis. Both of these tanks were more than 120 ft in diameter. The shell curvature of these tanks is much greater than the nozzle diameter, so the behavior is more like a nozzle intersecting a plate instead of a cylinder-cylinder intersection. Tanks much smaller than 120 ft in diameter behave differently (more like a cylinder-cylinder intersection), and the results obtained from Appendix P may not be applicable or accurate. TANK provides an alternative computation procedure for smaller tanks. This procedure is described in PVP-1279.
Related Questions
- I received a Warning of Impending Padlock letter stating there is a complaint against my property of illegal commercial and/or manufacturing uses. What should I do?
- When changing new cartridge, the computer generate a warning prompt stating installed cartridge differs from original cartridge. Why?
- Why does a warning message come up stating "Insufficient Phase Margin" when I am designing a circuit using SMS 6.24?
