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Recent content by Thomasmac

  1. Thomasmac

    Burning of low cal waste gas

    Thanks dcasto Where could I find some more information on Catalytic elements?, ie how they work and what they do. Regards R
  2. Thomasmac

    Burning of low cal waste gas

    Hey there, I have an interesting question that I think the experts may be able to point me in the right direction on. The CO2 waste stream from a process I am involved in has a tiny amount of entrained methane which needs to be combusted before release to atmosphere, It varys from around 1-3%...
  3. Thomasmac

    Hot buried Oil Lines

    Thanks again Biginch. Our pipeline coating/insulation is comprised of the following. Pipeline coated with 300um high temp FBE for corrosion protection then a 40mm layer of closed cell MDI injected foam with an outer PE casing (the insulation is factory applied with the outer PE casing being...
  4. Thomasmac

    Hot buried Oil Lines

    Very helpful thanks BigInch, We are now a little further down the track and have completed the soil modeling with Autopipe. We have come up with criteria for max bend angle and bend radius based on allowable pipe and soil stress levels and a full topographical survey is being carried out to...
  5. Thomasmac

    Hot buried Oil Lines

    I'm in the throws of designing a triple line buried pipline to run insulated and heat-traced at 120 C. The lines are only 1600m long, 2x4" and 1x6". I would like some information on how best to approach this line as there are probably a few schools of thought out there. We have the AutoPipe Plus...
  6. Thomasmac

    Detemination of Stress types in FEA

    Hello, I'm currently learning FEA analysis of pressure vessels using the ANSYS software and would like to know if there are any (free) web based resources that can help unravel the mystery behind how to classify the different stress types according to ASME. Illistrations showing the...
  7. Thomasmac

    Obround Ducting

    Has anyone tried to Validate the stress levels in the stiffening ribs of an obround vessel with FEA? The results I get at the outer fiber of my stiffening ribs are 2-3 times larger than those predicted in ASME 13-11. Have tried modelling with beam, shell and solid elements but it doesnt seem...
  8. Thomasmac

    Cross-head guide forces

    I'm trying to calculate the crosshead guide forces on a recip compressor but are struggling to find any literiture on it. Are there standard equations to calculate these forces?
  9. Thomasmac

    Valves for SW piping

    I'm after some 3D models of valves to add to my piping database
  10. Thomasmac

    Dynamic Buffering (TOC)

    I'm after some practical information on how dynamic buffering is used in a factory, I have read the Haystack Syndrome but are having troubles coming to terms with the practical implimentation of Dynamic time Buffers. Any links you could send me to or information you could offer would be warmly...
  11. Thomasmac

    Lofting in assemblies

    my email is maccas123@hotmail.com
  12. Thomasmac

    Lofting in assemblies

    Is it possible to create a loft between two sketches in an assembly to create what would look like a twisted piece of steel plate, ie a piece of 10x100mm flat streched between two faces which are not parallel,
  13. Thomasmac

    Impact Extrusion of aluminium

    I'm looking for a guru on the impact extrusion of aluminium. It's for a project I'm involved in with regard to the manufacture of Scuba Diving Cylinders. I would appreciate it if someone could point me in the right direction as I'm unfimilia with this type of process.

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