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  • Users: TomoB
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  1. TomoB

    Sockolet Nozzle - FE cylindrical shell model

    Hello, I need to verify external loads from the connected piping on the 1" XS nozzle that is connected to 4" XS pipe via 1" Cl.3000 Sockolet (MSS SP 97). I am using rohr2fesu, which is a cylindrical shell FE tool for piping elements. Does anybody have experience and an advice on what approach...
  2. TomoB

    Shear Lugs (Axial Stoppers) on Pipelines

    Hello, I need to check the shear lugs (axial stoppers) on pipelines with respect to the loads that were calculated in the stress analysis. I came across a project where Finite Element Analysis was used for these components. But is this really necessary? 🤔 What is your approach? Do you rely on...
  3. TomoB

    Modeling fittings acc. to ASME B16.11

    Hello, I am seeking advice on the best approach to model pipelines that incorporate ASME B16.11 fittings. These fittings appear to be quite stiff, and my concern is that I might model them as too flexible. My current approach would be to simplify the model by using the minimum wall thickness...
  4. TomoB

    ASME B16.9 reducer thickness

    Hello, I am performing a pipe stress analysis for a system and have encountered some confusion regarding the wall thickness of reducers. After reviewing the ASME B16.9 standard, I found that no specific wall thickness is defined for reducers. I also searched through the forum and learned that...
  5. TomoB

    Pipe shoe thermal displacement/movement - limitations

    Hello everyone, I'm currently working on a piping system of a live steam pipeline (around 500 m long) which serves as a main feed for turbine: DN200, s = 12.5 mm; T = 450°C; p = 68 bar(g). I am doing a static analysis with ROHR2 software. I have done numerous analysis for chemical facilities...
  6. TomoB

    EN 13480-3; allowable stress determination acc. to 5.2.2-1

    Hello, I have encountered a problem when calculating the allowable stresses for bolts made of A2-70 material. In a formula 5.2.2-1 of EN 13480-3 it is stated to use the second formula if Rm,t is available...
  7. TomoB

    Nozzle 2D shell analysis acc. to EN 13445-3

    Hello all, I have a trouble assessing the FEA results of a set-in nozzle on a dished end. Design pressure of a vessel p = 40 atu = 40,53 bar; temperature T = 100°C. Due to changed pipe routing the existing vessel's nozzle should be checked against the loads from piping, but high stresses due...
  8. TomoB

    Pipe supports / shoes / clamps - degrees of freedom for stress analysis

    Hello, Since the start of my career as a pipe stress engineer I can't crystalize the matter of whenever does the pipe shoe restricts rotations or not (and which directions). 1) Two major industry companies for which I have worked have guidelines that clearly points out for standard fix points...

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