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Hi, I have a question about the scope of ASME UCL. For a stainless steel STHE made with SA-240 304L on both sides, using an SA-965 F304L tubesheet with a corrosion-resistant cladding, and no welding to the cladding. Would this STHE fall under the scope of UCL rules? Please share your insights...

Hi, The following welding detail is for attaching a 2:1 head to a shell. Does ASME BPVC Section VIII, Division 1 prohibit such a configuration? HungM

Hi, experts, I am currently working on a Shell and Tube Heat Exchanger (STHE) design with the tube material specified as SB-677 UNS N08904. Table UNF-23.3 lists SB-677 UNS N08904, but I can't find the allowable stress values for it in Table 1B of Section II, Part D, Subpart 1. Does anyone know...

Hi, All As stated in UHX-13.5.9, we can use UW-20, UW-18(d), or Appendix A to design the tube joint. But does the Code requires the user to have the same tube joints for the tubesheets? Any restriction like as UHX-13.2 is mentioned elsewhere in the ASME Code? Considering this example of...

Hi, All As stated in API 660, Section 10.2.11, the flanged joints that have been taken apart after the final pressure test shall be reassembled with new gaskets and re-pressure tested. My question is that under what condition the reassembled flange-joint is exempt from re-pressure testing...