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  1. IdanPV

    Allowable Stress in ASME B31.1 - Table A-3

    Hello everyone, I need your assistance regarding the allowable stresses for austenitic steels. In Table A-3, Note (10) states that for temperatures above 1000°F, the carbon content must be at least 0.04%. This note applies to steels that are not low-carbon grades, which raises the question: Why...
  2. IdanPV

    Fittings for ASME I and/or ASME B31.1

    See B31.1 Para. 114, 115, 104.7
  3. IdanPV

    Mat SA-266 gr 2 EN equivalent

    EN 10222-2 Steel No. 1.0426 EN 10222-4 Steel No. 1.0571
  4. IdanPV

    Welding of SA312-TP316

    Thanks Huub!
  5. IdanPV

    Welding of SA312-TP316

    Hello All, According to B31.1, Table A-3, General Note (1) allowable stress values tabulated for temperatures over 1,000°F apply only if the carbon content of the material is 0.04% or higher. Is this note also applicable for welding material? Can I use ER316L for welding SA312-TP316 for...
  6. IdanPV

    Question about Ratcheting (ASME Sec. VIII Div.2)

    Hi, I rocommend to start with reading the below articles, it can give you better understanding: https://becht.com/becht-blog/entry/asme-section-viii-division-2-elastic-analysis-discussion-collapse-vs-ratcheting/...
  7. IdanPV

    Welding to Section VIII Div 1. Butt welds only?

    Some type of small fittings are allowed to be attached using fillet weld from one side only, see UW-16(f)
  8. IdanPV

    ASME Sec. VIII, Div. 2, Annex 3-F, Eqn. 8

    2000psi are 2ksi. Equations 3-F.6 to 3-F.8 are applicable for 13.6ksi ≤ Sa ≤ 870ksi. For Sa values below 13.6ksi (93.7MPa) you are just below the design life curve which result in infinite number of design cycles.
  9. IdanPV

    ASME Sec. VIII, Div. 2, Annex 3-F, Eqn. 8

    Same issue as here: https://www.eng-tips.com/threads/damage-gt-1-for-low-stress-location-v2017-bpvc-sec-viii-div-2-eqn-3-f-8.476449/#post-8624635 What is the value of Sa?
  10. IdanPV

    1/2 loading for 1/2 model in ansys?

    Looks like the PTB-3 example to me. Why don't you use 2D simplification?
  11. IdanPV

    Welding of S355JR

    Hello all, I have a SMAW-WPS made based on PQR of A106 Gr.B (P.No.1, Group No.1) I want to use this PQR to weld EN 10025-2 - 1.0045 (S355JR) which is (P.No.1, Group No.2). I know that it this is allowed by ASME IX but I wanted to know if it is allowed by AWS D1.1 & EN 15614. thanks!
  12. IdanPV

    Bentley Autopipe Question

    Thank you very much @sentrifice That worked!
  13. IdanPV

    Bentley Autopipe Question

    Hi! Thanks! Unfortunately I am not in Amsterdam for the B31 week
  14. IdanPV

    Bentley Autopipe Question

    Hello all, I am trying to edit a piping system model in Autopipe. I want to change to orientation of the 3 pipes marked in red. Now, those pipes are parallel to the Y direction, but I want them to be parallel to the Z direction (rotate in 90°) I am new to Autopipe so I guess there is simple...
  15. IdanPV

    SA-193 Gr.B7M bolt material used in Wet H2S service is not passing requirement of UG44b clause.

    Have you considered the usage of Code Case 2901? As for the bolt material, we use SA354 Grade BD when need higher strength (steam service)
  16. IdanPV

    Fatigue analysis of Rectangular Autoclave 1140 x 2100 x 7040 mm

    Note that the Code wording is: "The possible harmful effects of the following design feature shall be evaluated." My understanding is that you shall evaluate the possible effect of the feature that you mentioned, and check how it's effect the design life of the equipment. Keep in mind that when...
  17. IdanPV

    Fatigue analysis of Rectangular Autoclave 1140 x 2100 x 7040 mm

    Maybe ASME VIII-2, 5.5.2.2 will be suitable for your case. Make sure to evaluate the possible harmful effect of the design feature listed in (a) throguh (f).
  18. IdanPV

    U2-(g), appendix 46

    What make you think that the method of U-2(g)(1)(-c) is not valid? Note that if Div.2 Part 5 is used, all the failure modes shall be considered, see 46-4(c).
  19. IdanPV

    U2-(g), appendix 46

    My understaing is that because you do not have a Division 2 vessel, but a Division 1 vessel. For a Division 1 vessel you do not care about 4.1.1.2.1/2 and when no design rules are available you go to U-2(g). This means: When design rules are neither given in Division 1, nor in Part 4 of...
  20. IdanPV

    Electric Boiler Question

    According to ASME Interpretation Number I-81-01: An electric boiler where heat is applied to the boiler pressure vessel externally by electric heating elements, induction coils, or other electrical means is considered to be a fired steam boiler. An electric boiler where the medium (water) is...

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