I'm working on a vessel that will have a 6" Class 600 (1000 psi @ 400F) Blind Flange on a nozzle that requires a Centered Opening (1 1/2" NOM) and (6) 1/2" NPT Tapped Holes surrounding this center opening (Image attached).
I've read ASME B16.5 Table 6 and the 1 1/2" Centered Opening complies...
I'm working on a project that requires fabrication of a Refractory Lined Test Vessel (It's a Reformer) with design conditions 500 psi @ 2200 F that has the potential to spontaneously ignite an increase pressure up to 1500 psi. Usually for lower temperature/pressures I'm familiar with using...