prex, the thing is, I don't understand at what point multiple unreinforced openings are considered a cluster by UG-36(c)(3)(d)... Where does it say in the Code how to determine if it's a Cluster or Isolated openings? The diference of misinterpreting this is (d1+d2) VS 2.5(d1+d2)...
I found...
racookpe, regarding the threads, I'm not 100% sure at this point if the ones on the fire rod are npt or straight, I'll have to double check, but it's not a factor for determining the separation between the openings. The fire rods actually go on the 6 holes since we will have 6 fire rods...
We are to plug those with a custom part, not really relevant for the Bolted Cover design.
If I go the path of designing the Blind as a Bolted Flat Head instead of a B16.5 Blind Flange with openings and considering that the center nozzle would be welded top and bottom to be a reinforced...
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...
Raymond, thanks for your response, I had already taken a look at NFPA 68, it just doesn't seem to be helpful when you talk about venting high pressure vessels (at least not for an explosion scenario). I talked with people from Fike and they told me that that's is usually how they do it, they put...
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...
