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  1. Killstadogg

    RISA 3D V 18 Specific Complaints

    What frustrates me is how much slower the UI is. Entering nodes was nearly instantaneous in v17. Now in v18/v19 it stutters when you add nodes, records to spreadsheets, etc. This drives me crazy and breaks up my train of thought. Everything else about the UI seems like a huge upgrade in my...
  2. Killstadogg

    B31.1 and 10,000+ psig Tube and Fittings - Manufacturers sell items with stresses above yield

    btrueblood - Good point, these parts are probably autofrettaged. There's where I could make my argument. I will ask these manufacturers if autofrettage is part of their process.
  3. Killstadogg

    B31.1 and 10,000+ psig Tube and Fittings - Manufacturers sell items with stresses above yield

    Thanks BigInch, The equations provided in B31.1 show that the components DO NOT pass. However these B31.1 equations are based on the stress at the inside surface. Thick-walled pressure vessel equations (non-B31.1) show that yielding occurs on the inside surface but not the outside surface...
  4. Killstadogg

    Do you show flanges on a plant P & ID?

    Drawings are just a means to convey information. If the people actually using the P&ID aren't going to need to differentiate a flanged valve from a welded flange for their purposes then don't bother showing them. If there is a good reason to show them then show 'em. I lean toward the...
  5. Killstadogg

    B31.1 and 10,000+ psig Tube and Fittings - Manufacturers sell items with stresses above yield

    Hi all, I'm designing an ASME B31.1-2012 system that operates at 10,000 psig. After considering possible fluid transients I selected a design pressure of 12,000 psig. I've never done anything at this high of a pressure before so it's been sort of a learning curve figuring out what fittings...
  6. Killstadogg

    calculating head height

    According to DLite30, you can just pour the water onto a flat plate and it will drain into your final tank. Couldn't imagine that working too well. The same thing is going on with the drain in your bathroom sink, but you still have a basin to collect water in. Yes there will be all kinds of...
  7. Killstadogg

    calculating head height

    I think what you should do here is find your head loss for flow through your 14" pipe @1600 gpm (include entrance and exit losses and whatever other minor losses there may be). That amount of head loss will be roughly what hight of fluid you need to push your required flow through the drain. Add...
  8. Killstadogg

    Schedule

    If it's under 10" then it's SCH 40. A106 is carbon steel so absRoughness = ~0.00015 ft

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