Difference between wrc 107 and wrc 537

Wrc107 consists of many curves enabling engineers to calculate all types of local stresses caused by external loads exerting on a circular or rectangular nozzle on shell elements. Find the maximum loads that can be placed on nozzles using compress. Wrc bulletin 537107 provides methodology for calculation of stress intensities in the shellside juncture of a shell and a nozzle or solid. Im modeling a 36 sch std nozzle in a horizontal vessel with a 126. Wrc 537 contains equations that represent the graphs found in the march 1979 revision of wrc 107 making it both easier to program and more accurate. Local has the benefit of being independent of the orientation of the vessel. Step by step methods for wrc 107 and wrc 297 checking in. This must be considered for further investigation as per asme viii1, ug22. Wrc107 is based on a unpenetrated shell, while wrc297 assumes a circular opening in a vessel. Wrc 537 contains equations that represent the graphs found in the march 1979 revision of wrc 107 making it both easier to program and. Due to liability lawsuits bentley can not provide design details such as this. Bulletin 537 was published in 2010 53 and is intended to facilitate. External nozzle loads design using wrc107537 youtube.

Wrc 107 vs wrc 537 when it comes to attachments to pressure vessels, process piping and attached structural and lifting clips exert external loads on pressure containing parts. In response to numerous requests over the years for the precise equations depicted in the figures in the 1979 version of wrc 107, wrc 537. Wrc bulletin 107 wrc 107 has been replaced by wrc 537 wrc bulletin 107 presents the results of an analytical and experimental research program aimed at providing methods for determining the stresses in pressure vessel nozzle connections subjected to various forms of external loadings. There are some important items that engineers who use these softwares should be aware. Keywords stress analysis, wrc 107, wrc 297, finite elements, pressure vessel, nozzle and shell.

Codewares fea implementation is more accurate and usually less conservative than the methods of wrc 107, wrc 297 or wrc 537. Its limitations, scope and concepts of local stress cause are mentioned here. Wrc bulletin 107, local stresses in spherical and cylindrical shells. Why fea, wrc 107, wrc 537 are all in compress codeware. How to validate an attachment nozzle or support according to wrc. Wrc 107537 analysis local load convention pv elite. Analysis of stress in nozzleshell of cylindrical pressure. Our fea engine has been licensed from paulin research group prg, a leading authority in the field of pressure vessel and piping stress analysis. What is the difference between wrc 107 and wrc 297, which analysis is suitable for pressure vessel nozzle allowable load check, wrc 107 or wrc 297 in my understanding wrc 297 is sublimentery version of wrc 107 and i studied some books for nozzle allowable load check in wrc 297 takes more vessel connection points between nozzle and vessel shell so it gives more accurate result. The difference between stresses deduced from strain. Wrc bulletin 107 297 368 wrc limitation and usage quiz. What is the difference between wrc 107 and wrc 297. Wrc 537 provides exactly the same content in a more useful and clear format. What code should i select wrc107, wrc297, wrc537 in autopipe nozzle.

What code should i select wrc107, wrc297, wrc537 in. Which one is used by common commercial programs like compress and pv elite. Wrc 537 was published in 2010 and was meant to update and replace the widely used wrc 107. Bulletin wrc 107 contains directions to calculate local stresses in cylindrical and.

Wrc will no longer deliver wrc 107 when requested for purchase. Enter values for the following options when wrc 107 537 is selected for calculation method and local is selected for load convention system. Furthermore, wrc107 defines values for solid and hollow attachments of either round and rectangular shape for spherical shells but drops the solidhollow distinction for attachments to cylindrical shells. What code should i select wrc 107, wrc297, wrc 537. The software calculates stresses for sustained, expansion, and occasional loads and compares stress intensities to allowables. Wrc 107 has been replaced by wrc 537 boiler and pressure.