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  1. ali.pk

    vertical shell joint

    I think the solution @matschka has proposed is much better. I am wondering what if the rest of the plates have already been welded? Clause 5.1.3.8 of API 650 says, "Permanent weld joint backing strips are permitted only with the approval of the Purchaser". Can someone interpret this clause for...
  2. ali.pk

    How to Rectify Distortion of Annular Plates in Double Wall Ammonia Storage Tank

    Dear Khasaq, Did you come up with a solution?
  3. ali.pk

    Large capacity water storage tanks

    Dear TCS Reddy, Please also share the final solution that you came up with. I am also working on a similar project, five storage tanks of 106 meters and a capacity of 107,000 cubic meter each. I am working as a design engineer for the project. It is currently in the design phase. As it would be...
  4. ali.pk

    storage tank annular plat bottom corrosion

    @scipion (Petroleum)(OP) Please check whether your Tank bottom plates and annular bottom plates have been joined by a lap joint? If yes, then do the original design meet the requirements of Three Plate Lap Joint as per clause 5.1.5.4.1 and 5.1.5.4.2 of API 650? I'm getting a feeling that such...
  5. ali.pk

    API 650 Storage tank - Do I need intermediate wind girder ?

    Simply follow the instructions given in 5.9.7 of API 650 Step 1) Calculate the unstiffened height of the tank Step 2) Calculate the Tansposed width of each shell course. Step 3) Transformed shell height = Sum all transposed width of all shell courses. Step 4) If the sum transformed shell...
  6. ali.pk

    MAWP for nozzle loads and vessel supports

    @MJCronin (Mechanical) I cannot explain all at once, but I can explain the effect on saddle (As per Zick's Analysis) In the zick analysis check is there are two check for longitudinal stress between saddles. 1) Compressive Stresses 2) Tensile Streses There will be no direct effect on the...
  7. ali.pk

    MAWP for nozzle loads and vessel supports

    Which software are you using for that matter? COMPRESS has this option of evaluating nozzle loads based on MAWP. It uses calculated nozzle MAWP and uses the same to perform nozzle piping laods as per WRC 537 (or WRC 107). Regards, Asad

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