LP testing of tubesheet and plugsheet edges is required after weld prep and after welding. Top/bottom plates require LPT only on the short ends after weld prep and after welding (if thickness greater than 0.375"). This is to detect laminations in the plate that may cause the joint to fail in...
FYI, S32205 is not listed in Table UHA-23, therefore cannot be used in Sect VIII Div. 1 construction. S31803 is OK, and I would assume dual grade is OK, however, I would recertify it as straight S31803 per UG-10(a)to keep the AI happy....
SA-240 Gr. 316 Max. Temperature Limit for Sect VIII Div. 1 is 1500 F. Note G12: above 1000 F these stress values apply only when the carbon content is 0.04% or greater. I take this to mean you can't use this material above 1000 F if the carbon content is less than 0.04% carbon, because you have...
Non circular vessels shall be designed per Mandatory Appendix 13.
See 14-4(i). Flanges designed per U-2(g). Appendix 2 is for circular flanges only, see 2-1(a) regarding "circle". We design rectangular flanges per U-2(g) following guidelines from the book "Design of Process Equipment" by Kanti...
Lets assume we are designing a rectangular box header for an air cooled heat exchanger per Appendix 13. Calculations determine that the long side plates (tubesheet and plugsheet) need to be 1.0" thick. It is determined that the short side plates (top and bottom plates) need to be 0.625" thick...
Nowhere in the Code does weld size drive up plate thickness. Plate thickness is determined by pressure. In the case of equal thickness corner joint, tw=t.
UG-34(d) " The size of the weld tw in sketch (g) shall not be less than 2 times the required thickness of a seamless shell nor less that...
