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  1. staticmh

    Cladded Tubesheet to tube weld material clarification Required SA-266 Gr. 2/4N , SB-111, UNS (C7060

    @CuMo Its floating head. Yes mandatary to do strength welding. My query is pertained to welding material between tube sheet cladded face material (CrNi 90/10) to tube (SB-111 , UNS C70600 (CuNi 9010)).
  2. staticmh

    Cladded Tubesheet to tube weld material clarification Required SA-266 Gr. 2/4N , SB-111, UNS (C7060

    Hi All, Appreciate to have expert opinion from welding and material perspective. Case details: Heat exchanger tube to tubesheet weld Joint Tube sheet base material is SA-266 Gr. 2/4N Which have explosion bonded Cladded face (10mm) with - CrNi 90/10. Tube material = SB-111, UNS (C70600) (CuNi...
  3. staticmh

    UG-37 "Ar Lost" nozzle calculation reference

    SnTMan, Thank you for your clarification, your explanation is legit and cross verified it correct! :) This is default nozzle reinforcement limits which software is calculating based on the head thickness & RF pad thickness. and Yes you are right we can define the nozzle reinforcement limits.
  4. staticmh

    UG-37 "Ar Lost" nozzle calculation reference

    @SnTMan I always got positive firm feedback from you which really help me alot. Thanks for your valued time. Coming to the point: 1. Yes sketch attached : 2. Contacted to support team and so far no positive response received with demonstrative calculation. 3. Your point gave me an idea of...
  5. staticmh

    UG-37 "Ar Lost" nozzle calculation reference

    @some Curious Guy : Thank you for your valued feedback. I actually already inititate the clarification to software support team and even they dont know yet the basis and same populated ahead to their USA based developer and validation team. Regarding geometrical shape of welds with different...
  6. staticmh

    UG-37 "Ar Lost" nozzle calculation reference

    Hi Folks! I'm performing a nozzle calc which is "Set in" , NPS-2" with below details and I am unable to understand that from where PV Elite is considering "Ar Lost" value and subtracting from the A41 and A42. This nozzle is located on vessel dish with below details: Outer weld size (neck to...
  7. staticmh

    UCS-66(b)(1)(b)_Understand the reduce the MDMT due to lower membrane stress

    Gents, I'm little confused about the how compress is giving exemption of impact test at -55 deg. F by simply refereeing the clause UCS-(b)(1)(b). My governing thickness is = 3.810" Nozzle type = Heavy barrel Nozzle material = SA-105N Nozzle size = NPS-24" Shell thickness = 4.250" Required...
  8. staticmh

    Finite Element calculation for floating roof

    If your client is happy to see the rainbow, ask him for the extra money for FEA. Since FEA is quite time taking activity and eventually will be involving the extra manhours. Let him ask why it is particularly required? Even API is clearly providing the all manual calculation reference.
  9. staticmh

    ADVICE ON IMPACT TEST FOR WNRF APPENDIX-II FLANGE

    @Krausen, I do agree with you but the situation is not like that in this case. @SnTMan, Thanks for your valued feedback, MDMT is 0 deg. c. Please advice ahead based on MDMT.
  10. staticmh

    ADVICE ON IMPACT TEST FOR WNRF APPENDIX-II FLANGE

    Sorry I forgot to mention the MDMT = 0 deg. C
  11. staticmh

    ADVICE ON IMPACT TEST FOR WNRF APPENDIX-II FLANGE

    Hi Folks! Good day! I have a one body flange (WNRF)and blind flange (NPS-72") in accordance with ASME Sec VIII Div. 1, Appendix-II. The material of flanges are SA-105N (Curve-B) I'm pretty confident that blind flange of below sketch (150mm) thickness with SA-105N material (Curve-B) shall be...
  12. staticmh

    EFFECT OF LONG HOLDING TIME ON SA-516 70N DISH END NOMALIZING

    @r6155 Its higher than 5%. What will happen if we maintained higher time than MTR?
  13. staticmh

    What are Mandatory Spares for Pressure Vessels:-

    Its totally depend on plant to plant and varied based on specification to specification which acceptable to different region of end user. In Gulf most of the time, below are the requirement that we encourage to utilize: Spares for Commissioning & Start-up: 1- Bolting – 10% of each size (2 sets...
  14. staticmh

    A-105 Flanges Normalized and Produced to Fine Grain Practice

    As per B16.5 SA-105 flange can be withstand up to maximum -29 deg C. Hence as per your desired -46 deg C MDMT it shall not be work. Further to regarding the normalized / fine grain practice, this has been revised in ASME SEC VIII Div. 1 2019 ver., now the SA-105N is coming under the curve B...
  15. staticmh

    EFFECT OF LONG HOLDING TIME ON SA-516 70N DISH END NOMALIZING

    Hi Folk! Good Day! This is regarding the 2:1 Ellipsoidal dish EFE & end heat treatment, dish end nominal thickness is 20mm and material is SA-516 Gr. 70 N. As per the code clause UCS-79 (d) is applicable, which states “if dish end formed with cold forming and determined the extreme fiber...
  16. staticmh

    DOES ASME SEC VIII DIV.1 ALLOW NOZZLE INSIDE PIPE MACHINING?

    @SnTMan UW-13 (i) talk about the tapper transition for the flange and pipe weld join in case if the pipe and flange are not on same schedule. Its already under considered on other nozzles but on this case it does not apply. My concern is about to maintain the both flange & pipe at schedule -60...
  17. staticmh

    DOES ASME SEC VIII DIV.1 ALLOW NOZZLE INSIDE PIPE MACHINING?

    @r6155 Instead of outside diameter, Our main concern is to maintain the inside diameter for the successful insert the pump assembly through it.
  18. staticmh

    DOES ASME SEC VIII DIV.1 ALLOW NOZZLE INSIDE PIPE MACHINING?

    @SnTMan Thank you for your valued feedback. Infact even i also know it is possible but my ASME Inspector (AI) is asking about the solid justification.
  19. staticmh

    DOES ASME SEC VIII DIV.1 ALLOW NOZZLE INSIDE PIPE MACHINING?

    @ironic metallurgist Thank you for your valued feedback my dear, concern is not about required thickness, infact it is about the pipe inside machining. Vessel pump vendor assembly is unable to go through the Schedule-80 pipe. so we want to utilize the schedule-80 and then machining to maintain...
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