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  • Users: kremenco
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  1. kremenco

    Value of the angle alpha in fig UW-9-2

    Ho Friends, The value of the angle alpha in the following figure is given as less than 71.5 degrees in UW-9(c)(2). Can we assume that this angle can be any value between 0 deg and 71.5 deg? Or are there any other restictions. We normally provide this angle as 30 deg. Thank you in advance. Kind...
  2. kremenco

    Applicability of UG-44(b) for Aluminium Standard flanges allowed as per Code case -2905

    Hi Friends, Is it acceptable to use the UG-44(b)(4) formula given below to confirm the pressure temperature rating of an aluminium pipe standard flanges allowed as per Code Case 2905? Thanks in advance. Ranjit
  3. kremenco

    Symbol for angle needle valve

    Hi Frineds, How is angle needle valves shown in P&IDs or any specific type of angle valves for that matter? Thanks Ranjit
  4. kremenco

    Query regarding rings in cold stretched vessels as per Appendix-44 of ASME Sec VIII Div-1

    Hi All, The snip of Appendix-44 (i) is given below. In this context what is meant by "centroid of the ring"? Is it the centroid of the ring structural crosssection or centroid of the ring itself? What is an example of a structural discountinuity mentioned here? Is a longitudinal shell weld...
  5. kremenco

    Manufacturer of Sleeves for mounded storage bullet nozzles

    Hi friends, We are trying to locate manufacturers who can supply sleeves (see the attached file) for the nozzles of mounded storage bullets as per EEMUA-190. If anyone here knows such manufacturers, plese guide me. Kind...
  6. kremenco

    Calculation of Anchor Bolt Diameter/ Length for Pressure Vessels

    Dear Friends, Why is embedded length not a factor in calculating the size of pressure vessel anchor bolts? Is there a method to calculate required length of anchor bolt when the foundation is made of structural steel and not concrete? Kind Regards, Ranjit
  7. kremenco

    Should the Jacket of a Cryogenic Vessel be considered as pressure vessel?

    Cryogenic pressure vessels are double walled with outer jcakets fully enveloping the inner vessel. The annular space between the inner and outer vessels is fully vaccumized and filled with expanded perlite. In a normal case the external pressure on the jecket is 15 psig or less. As per Appendix-...
  8. kremenco

    Acceptable full penetration Nozzle attachments not readily radiogrphable.

    Hi All, As per 2011 addenda of Div-2, the following detial 4.2.10.8 is not readily radiographable. However, in recent editions of Div-2 , it (Detail 4.2.10.7) is readily radiographable. What could be the reason for the change? Regards,
  9. kremenco

    Self Reinforced Nozzle Weld Detail as per detail 7 of Table 4.2.13 of Sec VIII Div 2

    Hi Fellow Engineers I have come across the weld detial given below. Is it mandatory to provide an internal projection for the nozzle at the location marked with red arrow to have a minimum fiillet weld of size tc? Or is ok to increase the fillet weld size from zero at this location to a...
  10. kremenco

    Length of Cylindrical Shell on the each side of the bellows

    ASME SEC VIII Div 2, Para 4.19.2(g) states that "The length of the cylindrical shell on each side of the bellows shall not be less than 1.8√(Dsts)". While starting point for measurement of this length is provided by fig 4.19.2, the ending point of measurement of this legth is not clear. Is the...
  11. kremenco

    U-2(g)(1)(-a) and Appendix 46 of ASME Sec VIII Div 1

    Is it an intent of code paragraph U-2(g)(1)(-a) to exclude the use of Appendix 46 to design the components of a Division 1 pressure vessel when design rules exist in Division 1?

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