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  • Users: Z_Z
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  1. Z_Z

    HYSYS Dynamic for reducing feed pressure with time

    Hi there, I would like to learn something in dynamic hysys. Specifically having pressure in the FEED decrease with time (For example starts at 250bar and with time goes down gradually to 20bar). Is that even possible? The pressure reduction is to depict how a trailer carrying compressed...
  2. Z_Z

    STAAD Pro - simple lifting analysis

    Hi all, I am trying to do a lifting analysis for a skid with some pipes, fittings, valves, heaters etc. I am trying to figure out how I can calculate the best location of the hook for the cables to be attached to avoid bending of the skid structure (picture 1) and how to calculate the size of...
  3. Z_Z

    Getting Center of Gravity of structure with loads in STAAD pro

    Hi guys, I am trying to get the Center of Gravity (COG) in STAAD pro for a skid support structure with the all the loads in place (pipes, valves, fittings, etc.) as the structure will be lifted and transported. I managed to get the COG for the structure only, regardless of the distribution of...
  4. Z_Z

    How long does API 5L X52 last transporting sour gas?

    Hi all! I wanted to know how long should I expect API 5L X52 to last transporting sour gas? H2S (10 - 100 ppm) Cl (not much, less than 20 ppm if any) CO2 0.5% N2 0.2% pH 4 - 5 O2 (little to no O2) T = 10C - 60C P = max 250 bar Just an approximate to understand how long they usually last in...
  5. Z_Z

    Maximum allowable H2S concentration while using SS and also while using CS?

    Hi everyone, I have a question regarding the pipe/tubing material to use for Sour gas: - What is the maximum allowable concentration of H2S while using SS 316? - What is the maximum allowable concentration of H2S while using A106? - Incase of over 200ppm of H2S concentration, what materials...
  6. Z_Z

    How long does 304 and 316 pipe last transporting sour gas

    How long does 304 & 316 stainless steel last for transferring sour gas (around 30ppm H2S) approximately. Also, is using A106 grade B CS pipe even an option and how long can it last? I am doing some research and got extremely confused as this is something out of my scope (I am sure you can tell...

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