Hi,
after UG-99 hydrostatic leak testing [and supplemental gas leak testing (sniffer)], a pressure vessel has the first sealing surface of the connections used for pressure test exposed during dismantling.
There are scratches on such faces happening at this moment.
After repair of those faces...
Hello,
in the vein of 3-2-1; and on order to reduce the calculation cost,
if there are symmetry planes on your box, maybe you could use half or a quarter of your model, therefore some of the rigid modes would be constrained.
You would only need to constrain the axial displacement at the capped...
Hello,
In the following flanges Standards/Norms, the raised face height is presented or tabulated.
[ol 1]
In ASME standards, the higher the pressure/temperature class, the higher the raised face height:
ASME B16.5-2020 states "1,5 mm raised face regularly furnished on Classe 150 and 300...
Hello,
we cannot see any lubricant around the studs/nuts on the overall view.
As stated by LittleInch, ASME PCC-1-2022 give guidance on lubrication (check Figure 8.1), which doesn't seem fulfilled. We should see excess of lubricant.
You may have attained you torque, but not have developped...
Dear TGS4,
May I try to sum-up my understanding: the wording "[...] The exemption provided in Division 2, 5.3.1.1 is applicable to weld details in Division 2, Part 4 only. There exist weld details in Division 1 that are not permitted in Division 2 [subject to the provision in 46-3(f)]; those...
Dear @r6155,
I greatly appreciate your concern, however I will restate that this illustration if for your information only:
I don't want to disclose my company's drawings therefore I used this image because the general arrangement of the components is the same.
I don't want to mix codes; as...
Dear IdanPV
Thank you. I understand your interpretation, so the answer to my initial question would be: there is no exception for VIII.1 components, furthermore for VIII.1 weld details not permitted in VIII.2.
So 46-4(c)(2) could be rewritten as "demonstration of protection against local...
Dear r6155, DriveMeNuts, Cobra17, TGS4,
thank you for your interaction, answers and questioning.
Our design follows the ASME BPVC.VIII.1 design by rule calculations, taking into account the Reverse flange (Appendix 2), Opening (mainly UG-36, UG-37, UG-40 (fig UG-40 (a-2)) and Method of...
Dear @r6155, dear TGS4,
thank you for interest in my question and your replies.
I indeed did not and do not intend to design the thickness with DbA. The dimensions have been assessed with UG of Div.1. The DbA is done as a supplement to the DbR.
The DbA run is not to assess this particular...
Hi,
for an ASME BPVC.VIII.1 "Design By Rule" designed pressure vessel, we conduct a supplemental analysis along the requirements of Appendix 46, 46-4 DESIGN BY ANALYSIS (using the methods of ASME BPVC.VIII.2 Part 5).
One of the components of the numerical model is a Studded pad type connection...
