Jun 24, 2004 · WRC 107 and 297 are based on different methods of analysis. 297 considers the relative stiffness of the nozzle as well as the cylindrical shell (297 considers only cylinders attached to cylinders). The bulletin 297 determines the stress at only 4 cardinal points at the nozzle-shell junction.

Oct 17, 2005 · Bulletins such as WRC-107, -297, and -497 provide a method to determine the stresses in the shell due to the mechanical loads imposed on the attachment. Some of the bulletins address pressure stresses as well, and consider stresses in the nozzle neck also.

Apr 3, 2006 · I want to know in what conditions WRC 107/297 is different. I know WRC 107 is only to computes stresses in the vessel and WRC 297 for computing the stresses in the nozzle and the vessel. But which is the best method to anlyze nozzle loadings. What is the critera for determining which WRC method to be used to analyze nozzle loadings.. Thanks

Dec 8, 2011 · This forum has tons of information on WRC 297. Type in WRC 297 in the search box in the top of this page and start reading the previously discussed identical topic and related topics. Come back with specific questions or clarifications, but also read the buletin to have a basic idea of what to ask. Cheers, gr2vessels

Aug 14, 2006 · This sounds like a typical WRC-107 / WRC-297 calculation, with the exception of the coordinate system. All load and moments are applied simultaneously. WRC-107 uses a vessel coordinate system, with shear forces and moments in vessel longitudinal, circumferential and radial directions rather than x,x,z coordinates.

Sep 23, 2017 · WRC 297 is used for pressure vessels only. For fin fan coolers, equipment fabricator will give you the allowable nozzle loads table. You have to compare piping loads with those.

Jun 26, 2002 · • When the d/D ratio for a loaded nozzle is greater than 0.5 and WRC 107 or 297 is considered for use. • When the t/T ratio for a loaded nozzle is less than 1.0 and WRC 107 or 297 is considered for use. • When the nozzle is pad reinforced and WRC 107 …

Nov 10, 2009 · Although they don't specifically specify pads, WRC 297 does provide a method for increasing the thickness for pads and inserts. Wince WRC 297 is a supplement to WRC 107, it is applicable to both. gr2vessels, I completely agree with you regarding PV Ellite and CodeCalc, we have written to COADE regarding these mistakes but as yet have not had a ...

Oct 10, 2020 · Warning - The ratio, Dn/Tn (8.166) is < 10 check the limitations of WRC bulletin 297. how to fix it by using PV Elite Replies continue below Recommended for you

Dec 10, 2009 · I am working on a nozzle load calculation on a small pressure vessel. The nozzles are 2" pipe. As I look at paragraph 3.2 in WRC 297, there is a statement that for thin-shell theory to be valid, d/t must be greater than 20. That seems to …