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  • Users: mechfabricator
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  1. mechfabricator

    out of tolerance peaking and banding

    We have a 20m diameter fixed roof supported roof storage tank as per API650, the roundness, plumbness and levelness are ok, but peaking and banding in 4 points are 40mm, is that possible to accept or it needs repair, the erector said that repair is possible by tearing the seams and re-welding...
  2. mechfabricator

    peaking measurement method

    can anybody let me know how we must measure peaking, when we use the template,we can fit the template in one side to shell and measure the distance between other side of template and shell. in this case it seems that peaking is half of this distance, is this correct or not.
  3. mechfabricator

    magnetic particle test for shell to bottom joint as per API 650

    In M.4.2 for the shell to bottom joint we shall do as following: "MT shall be performed at every 13mm of deposited weld metal while the weld is being made and on the completed weld." if the bottom plate is 10mm thk. and first course shell is 12 mm the fillet weld size is smaller than 13mm, then...
  4. mechfabricator

    maximum inlet nozzle size from tank roof

    what is the maximum inlet size for atmospheric tank as per api 650. can we put a 20" inlet nozzle in roof of tank?
  5. mechfabricator

    cold water storage tank thermal insulation

    can anybody tell me about thermal insulation under the bottom plate of a chilled water storage tank. tank foundation is concrete ringwall, what kind of insulation we can use under the bottom plate? Regards,

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