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  • Users: dygorane
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  1. dygorane

    Extra Stud (Size>1 1/2") Length For Hydralic Tensioner

    Hello everybody, 1) For Studs > 1 1/2" manufacturer is using Hydraulic Tensioner, Does Stud length shall have extra margin of one nut each on Both Sides? Is it ok if only one side has that margin? What is general practice? 2) Does both Saddles of Top Exchanger shall have Slots in Stacked...
  2. dygorane

    WPS AND PQR IMPACT TESTING

    MDMT for vessel is -50°F for design pressure. There one more condition other than design pressure (pressure less than design pressure) which needs MDMT of -58°F. Using reduction ratio UCS-66 base metal needs to be impact tested at -50°F and not at -58°F. Can we take reduction for impact...
  3. dygorane

    Flow Over Weir Plate in Kettle Reboiler

    I want to calculate flow over weir plate for kettle reboiler, process fluid is C3+Hydrocarbon (Density:474.9kg/m3 & viscosity: 0.086cP). I found following formula from internet, but this is for water. Horizontal, sharp edged weirs (Bazins formula) Q = 0.66 x cB x (2g)0.66 x H1.5 where; Q...
  4. dygorane

    Finned U-Bend Area In HTRI

    In modeling an exchanger with low fin tubes, a question arose about how HTRI handles the u-bend area if the nozzle is after the bend. For the tube surface area in the bend, does HTRI use the finned area or does it use bare area? It appears that tube providers standard is to not fin the...
  5. dygorane

    REINFORCEMENT OF OPENING IN ELLIPTICAL HEAD

    Hello there, We have 36" id elliptical head and we need to put 24" manway on that. Manway is cutting through Knuckle of head. Per UG-36(b)(2)there is no limitation on size of the opening as long as you reinforce it. But can nozzle cut the knuckle of head? does code have any limitation for this...

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