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  1. mechcat

    ASTM A860 allowable stresses

    Does anyone know the reason why ASTM A860 materials are not included in either Tables A-1 or K-1 of ASME B31.3. Thanks in advance.
  2. mechcat

    ASME B16.9 TEES

    Could someone please advise where the external branch radius rx limitations given in ASME B31.3 Table D300 note 4 are specified in B16.9.
  3. mechcat

    ASME VIII Div 1 Design by Analysis

    Thank-you for your replies, much appreciated.
  4. mechcat

    ASME VIII Div 1 Design by Analysis

    Under what conditions may the Design by Analysis Requirements in Part 5 of Section VIII Division 2 be used to design components for a Section VIII Division 1 Pressure Vessel?
  5. mechcat

    ASME B16.5 Blind flange with offset connection.

    Hi, Should a ASME B16.5 blind flange with an offset connection fitted, be considered as a modified flange and calculated in accordance with UG-34 or can it still be classed as a standard component per UG-11(2) if the connection does not exceed the size limits of UG-36(c)(3). Thanks
  6. mechcat

    ASME IX Weld Procedure Qualification

    Thanks for that Metengr, With regards the second question, if both processes are qualified individually for the total joint thickness, do I need to re-qualify for the two processes in combination.
  7. mechcat

    ASME IX Weld Procedure Qualification

    Hi Metengr, Please excuse me, What I am trying to get at is if I have a procedure that is qualified using a single V (>) butt weld (welded from one side) would that allow me to weld double the thickness if I use a double V (><) butt weld and weld from both sides. With regards the second...
  8. mechcat

    ASME IX Weld Procedure Qualification

    If I am qualified to weld up to 2” thick plate, does this allow me to weld 4” thick plate if I weld from both sides using a double ‘V’ weld ? Also would I be able to use 2 processes i.e. sub arc outside manual inside even though I am only qualified for each process individually. Thanks
  9. mechcat

    U-Stamped Vessels

    Further to my previous thread. When the certificate of autorization states “….. and field sites controlled by the location” , how does this work?, should each location be listed in the quality manual. What happens if they obtain an order at a new location, will this new location need to be...
  10. mechcat

    U-Stamped Vessels

    Is the certificate holder allowed to sub-contract the welding of the longitudinal & circumfrential welds in a U stamped vessel to a non approved shop or employ contract welders.
  11. mechcat

    LWNRF FLANGES

    long weld neck flanges were included in the 2003 issue of ASME B16.5, see paragraph 2.8 " Straight Hub Welding Flanges".
  12. mechcat

    Upgrading ASTM A516 Grade 60 to 65

    I have a test report for ASTM A516 Grade 60 plate that meets all the requirements of Grade 65, what would be required to upgrade this material to grade 65.
  13. mechcat

    Algerian Pressure Vessel Code

    Does anyone know if there is an Algerian Pressure Vessel Code.
  14. mechcat

    ASME forms templates

    Kevin, Try the ASME web site @ www.asme.org
  15. mechcat

    Oxygen Flow in tubing

    I would recommend 0.25&quot; i.d. tube.
  16. mechcat

    Oxygen Flow in tubing

    No! to deliver 15 l/min you would need to increase the pressure or the tube id.
  17. mechcat

    Oxygen Flow in tubing

    assuming operating temperature is approx 25 deg C 6 l/min would give you a pressure drop of 0.44 psi
  18. mechcat

    Orthogonally stiffened shells

    Does anyone have any worked examples for checking the buckling pressure of orthogonally stiffened shells in accordance with DNV recommended practice RP-C202 ?
  19. mechcat

    Orthogonally stiffened conical shells

    Does anyone know of any software/shareware available for calculating the external buckling pressure of orthogonally stiffened conical shells?
  20. mechcat

    Bolt relaxation at high temperature

    Hi Dennis, Thanks for your reply. The bolts are 3/4&quot;unc set at 295 ft-lbs. We are having trouble with the joints leaking at ambient having cooled from 365 deg. F.

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