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  • Users: Jagmtr
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  1. Jagmtr

    Gasket position in flange

    Greeting to everyone I have one flange where gasket is placed near flange id=1000mm with gasket width 13mm. Internal design pressure is 100 kg/cm2 & 150 deg c design temperature. Flange pcd is 1283 mm Later after procurement I come to know that gasket shall be placed always near to pcd for...
  2. Jagmtr

    thread794-439534 Greetings to ev

    thread794-439534 Greetings to everyone I have come across in very strange situation I have reverse flange which was designed for grooved metal gasket having m & y value Now I am looking to qualify this flange for diaphragm gasket which is having m=0 & y =0 I was thinking that my flange...
  3. Jagmtr

    hydrotest pressure

    Hello everyone i have some doubts related to hydro test pressure my first doubt is, does selection of ug99b or ug99c depends upon shop or field hydro test. i have understanding that selection does not depend upon whether we r performing shop or field hydro test. we can considered anyone in...
  4. Jagmtr

    ring stiffeners on flat head & axial stiffeners on cone

    Hello everyone. I have cone with flat head closure. I need to place ring stiffener on flat head & axial stiffeners on cone section for external pressure. I am attaching figures for better understanding. I am not getting any clause for such stiffeners in ASME section viii div 1. please suggest...
  5. Jagmtr

    knuckle radius of eliptical head

    Hello everyone. when we have different D/2h in ellipsoidal heads we have different crown radius by using table UG-37, sec viii div 1. So does we have different knuckle radius for different D/2h in ellipsoidal heads by using table 1-4.4 or table 1-4.4 is only applicable with appendix 1-4f(2)...
  6. Jagmtr

    openings in flat head ASME section VIII div 1

    Hello everyone, I have following doubts in understanding UG39 & UG36 ASME section VIII div 1. 1. UG36 is applicable to flat heads or not. I have this doubt because it seems that UG36 is all about formed heads not about flat head. 2. UG39(a)stated that:"The rules in this paragraph apply to...
  7. Jagmtr

    UW-16(f)(2)

    Hello all, I have below one question that may be very silly but i am stuck to find the answer. "UW-16(f)(2) stated that:"(2) Fittings not exceeding NPS 3 (DN 80) shown on Figure UW-16.1, sketches (x), (y), (z), (aa), and (bb) may be attached by welds that are exempt from size requirements...
  8. Jagmtr

    Emergency vents for caustic soda solution

    Hi friends, I need a help. I have to design a storage tank to store 40% caustic soda solution. My roof to shell joint is coming non frangible. So i think for emergency vents. But i understand that my stored product is non flammable so emergency vents are not required. There is also heating...
  9. Jagmtr

    shell manhole neck thickness

    Dear all, i have observation that API 650 has considered very high shell manhole neck thickness as per table 5.4a. I understand that manhole neck shall be designed only for hoop stress caused by liquid head pressure. since manhole diameter is always very very less compare to tank diameter...
  10. Jagmtr

    Shell manhole nech thickness table 5.4a note b

    Dear all, I have one issue in my api 650 storage tank. Due to oversight i have not considered note b in table 5.4a for shell manhole thickness. I have chosen less thickness than the minimum requirement & mistake come to know when hydro test has been done. Please give me suggestions for...

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