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  1. EngineerEPC

    Buckled Internal Shell under Half-Pipe Jacket: FEA Options for FFS?

    Dear TiCl4, Thats a lot of popping in. I thought it was internal jacket, then i read the post carefully. Best wishes for next path different topic === We had experience of using laser welded jackets on outer shells of brewery tanks having diameters in the range of 4-5 metres and shell...
  2. EngineerEPC

    Reinforcing Pad vs Gussets

    Dear Sir, Thank you for taking the time to provide a detailed reply and a sketch. Really grateful. Thanks and regards EngineerEPC
  3. EngineerEPC

    Reinforcing Pad vs Gussets

    Thanks for your detailed explanation. I understand the variation of stress from 0 to 90. However I am having trouble imagining figure UG-37.1. Can you please explain it further. (I understand that for tangential nozzles, area requirement along the oblong dimension of the opening will be more if...
  4. EngineerEPC

    API 650-intermediate wind girder-clause 5.9.6-pwd calculation

    Thank you Hturkak.
  5. EngineerEPC

    API 650-intermediate wind girder-clause 5.9.6-pwd calculation

    Hello All, I have 2 queries regarding the definition of Pwv. (for the 1st value) a) Pwv is wind pressure at 10 m above ground per applicable building code considering all applicable factors, such as gust factor, exposure factor, height factor, importance factor == why is it considered only at...
  6. EngineerEPC

    EN13445 Nozzles loads acc. to Clause 16

    Hi FPPE, Point B) mentioned in earlier post is for permission given by Code to replace Design by formula (i.e clause 16 in your case) Point A) is same as B), just it is specified under annex C. I request your attention to clause C.4.5.2 (Selection of methods for determining stresses) in Annex...
  7. EngineerEPC

    EN13445 Nozzles loads acc. to Clause 16

    Kindly check Annex C in EN 13445 part 3. (Design by Analysis-method based on stress categories) A) Some points taken from annex-C are listed below === Quote 1) It may be used: — as an alternative to design-by-formula (see 5.4.1); 2) It may be used for a component or even a part of a...
  8. EngineerEPC

    High Pressure vessel design using DIV 3

    Hello Ronak, Best wishes to you and firm. Hello IdanPV Thanks for the guidance.
  9. EngineerEPC

    High Pressure vessel design using DIV 3

    Hi Ronak, out of curiosity, which industry are you catering for such a high-pressure value? Nuclear? Regards
  10. EngineerEPC

    EN 13445-Pressure Vessels-Weld gap

    Dear all, Is there any guideline or minimum distance requirement for weld gap (from weld toe to weld toe) between an external attachment (such as platform/pipe support cleats) and a cylinder L-seam or cylinder C-seam provided in EN-13445. I have come across minimum distance requirement between...
  11. EngineerEPC

    Tube to tube sheet welding at inner face (shell side) of Tubesheet

    Hello EdStainless, Thank you very much for the comprehensive reply. It is now much clear to visualise. Cheers
  12. EngineerEPC

    Tube to tube sheet welding at inner face (shell side) of Tubesheet

    Hello EdStainless, Thank you for the reply. Regarding butt weld with tube mated to hub on backside of tubesheet, EN-13445 part-3 has that sketch also. Please refer below. Actually, I am enquiring about the manufacturing steps. (which tubes are welded 1st, then their NDE requirement,etc) Thanks...
  13. EngineerEPC

    Tube to tube sheet welding at inner face (shell side) of Tubesheet

    Dear All, Has anyone come across Tube-to-tubesheet welding at inner face (shell side) of Tubesheet. Sorry if it is a foolish question. I am baffled as to how it is accomplished. Please refer below snaps from EN-13445 part-3 for reference. Thanks and regards
  14. EngineerEPC

    Have you ever seen a 3:1 ellipsoidal head used on a vessel?

    Hello Please refer below snap from theory and design of pressure vessels by John Harvey for sigma 1 and sigma 2.
  15. EngineerEPC

    Have you ever seen a 3:1 ellipsoidal head used on a vessel?

    please refer below snap from theory and design of pressure vessels by John Harvey.
  16. EngineerEPC

    ASME Sec.VIII Div-01-Appendix 1-6-dished cover-joint efficiency factor

    Dear All, Thank you for your replies. = yes, it seems like they are designed with no welds or welds with full RT. Thanks and regards
  17. EngineerEPC

    ASME Sec.VIII Div-01-Appendix 1-6-dished cover-joint efficiency factor

    Dear All, For the dished covers shown in 1-6(b), 1-6(c) and 1-6(d), joint efficiency factors are not required as per code. For dished cover as per 1-6(c), it seems possible since such type of construction will mostly involve a forging. The covers for 1-6(d) will be formed as far as possible...
  18. EngineerEPC

    How to verify the reinforcement and rigidity of large blind flange with nozzle

    Hi, FEA seems to be the only option, I had encountered the same concern, and we have performed FEA of blind flange with nozzle, as AI was insistent for resolution of external load into blind flanges. Thanks and regards

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