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  • Users: Outlaw500
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  1. Outlaw500

    Degauss of LCD

    I'm looking for a way to degauss an LCD panel. The issue is that either the material handling equipment for the panel or the stamping process has caused residual magnetism in the metal. For our product we have to pass a DO-160 magnetic effects test for compass deviation. What would be the best...
  2. Outlaw500

    Internal Baffle Welding to Pressure Boundary

    I'm designing a vessel with SA-240 304L and a SA-240 304L internal baffle. I have the weld detail called out for a 3" on 6" pattern staggered both sides. Our customer would like it fully welded both sides. Is there any code reason why a 3" on 6" pattern both sides is not acceptable? 3" on 6"...
  3. Outlaw500

    MSS Type A Stub Ends:

    When writing a specification for a MSS type A stub end. What is the correct specification that meets ASME code compliance? The only specification I have been able to find is: For example: 4" MSS Type A stub end Sch 40, Matl 304L, MSS-SP-43. Shouldn't I also specify the SA number like...
  4. Outlaw500

    Saddle for Horizontal Vessel Wear Plate Width:

    I am designing a horizontal vessel with 2 saddle supports. Vessel desinged using compress software. The issue I am having is that I have a customer that would like the wear plate width to be less than what my software will allow based upon the saddle width. If I narrow up my saddle width the...
  5. Outlaw500

    Pipe Specification?

    I'm looking for a pipe specification to use for a pressure vessel. I need a 36" OD Carbon steel pipe, vessel wall depending on pipe specification will be between 3/8" and 1/2" thick. Design Temperature 300F, Design Pressure 50 Psi. MDMT -20F We can fabricate our own vessel wall but we are...
  6. Outlaw500

    Shell and Tube Assembly Methods?

    I'm looking at a new design for a shell and tube heat exchanger. Can anyone tell me how the assembly of the tubes into the tube sheets is normally done? I know we are going to roll the tube ends to attach them to the tube sheet at each end. In this case the tube sheet is welded to the shell...
  7. Outlaw500

    API 620 F&D Bottom:

    I'm starting to get involved heavily in the design of API 620/650 tanks. A tank that we are designing has a F&D bottom that is unsupported. In reviewing the API code I'm not really finding anything that looks like a fit. In reviewing the E-tank software they use the ASME VIII Div 1 formulas...
  8. Outlaw500

    Butterfly Valves fundamentals

    Does anyone know if you can calculate the dynamic torque required to operate a butterfly? I'm designing my own butterfly valve for a special application in air handling. It is about 96 inches in diameter and has about 40 inches of water column across the valve at closed state. What is the...
  9. Outlaw500

    Design of Vacuum Vessel

    I need some help in determing allowable stresses on a large vessel. I have a large diameter vessel: 15'-0" Wall Thickness: .1875 inches Height: 12 feet Atmoshpheric pressure outside and a vacuum inside of about 25 in water. I know I'm way overkill on hoop stresses what I'm concerned about is...

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