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Does anyone have a suggestion on how to simulate tubes when analyzing a tube sheet on a shell and tube TEMA type heat exchanger? I would rather not model each tube individually. I have thought of adding a hinge restraint to each tube hole but I am not sure that would simulate tubes properly on a...

I am new to using simulation and trying to analyze a nozzle in a 2:1 head configuration. The end of the nozzle is subjected to various forces and moments due to piping. There is no issues with modeling the forces but I am not sure how to apply the moments. Currently I have treated them as...

Does a proof tested part per UG-101 ever expire in the eyes of the ASME Code? Does it ever expire for Alberta CRN registration? This would be a proof tested cover of a heat exchanger. Thanks!

See UG-37(a), Definition of "E" and "E1"

Can I machine off the RF of a standard ANSI B16.5 flange without affecting the pressure rating of that flange? How about machining off 1/3 of the RF height? Thanks!

If I have a heat exchanger with a tubesheet sandwiched between two body flanges (one flange subjected to 100 psig shell side design conditions, one flange subjected to 800 psig tube side design conditions). Does Appendix 2 require me to design both body flanges to the worse case Wm1 and Wm2 of...

Does the same rule apply if I have wld pipe such as SA-312 304 Wld? Or is this only for Smls pipe shells?

According to this interpretation if I have smls pipe and a bolted joint at each end welded to the shell with a full penetration corner joint a JE = 1 is permitted. What if my weld attachments on both ends are loose type flanges (slip on flange / double fillet)? Can I still use a circumferential...

Yes I did. You are correct when you spot RT smls pipe you can claim a JE = 1. But per UW-11(a)(2) when full RT per code (not 100% all BW) is called for on a vessel, nozzles which have weld neck flanges attached to them that are < 10" NPS do not need to be radiographed in order for the vessel to...

E = 1 even though the nozzle weld will not be subjected to any RT? Remember, the shell may be radiographed but the nozzle does not have to be RT examined per code.

UW-11(a)(2) states that radiography is not required for Cat B and C butt welds in communicating chambers that do not exceed 10 NPS. If I have a vessel with Full Per Code RT and nozzles which are 6"-RFWN nozzles, can I take credit for a JE = 1 in my calculations for these nozzles even though...

This has probably been asked before but. If I perform spot RT on a circumferential joints of ERW (SA-53B) pipe is my longitudinal JE = 1 or .85? Thanks!