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  1. fifo62

    Two FEA runs and different results for the same model !!!

    Can anyone give me some input on FEA with ANSYS to fix a potential case of conflict I'm in between? From a Contractor my Company got an equipment, a quite slender header with a complicate geometry. The Contractor is responsible both for design and construction. The equipment is intended for a...
  2. fifo62

    Deflection of slender thinwall header under pressure only

    Dear all I'm discussing with a supplier about this fact: in presence of a very slender and light thickness pipe header 8" O.D., thk 8.18 mm, 3.8 m length,with four 6" nozzles, designed at 42 bar (g)/170 °C, mat. SB 425 UNS 08825 (See the link to understand geometry) I'm asking for the...
  3. fifo62

    Fin coolers bend fretting under vibration.

    Hi Gents I have in front of me n°6 fin fan cooler ( three bays / two per bay ) in sour service (high H2S contents), design 120 bars / 115°C, UNS N08825 ASME VIII div.2. Four pass with return U bends, 1"1/2 15 BGW (1.8 mm), at the fin tube hedges. Very critical service. Bundles are already...

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