I'm designing a vessel according to ASME I and I'm wondering whether it's advisable/mandatory to check ASME B16.5 rating against external loads.
To be on the safe side, I decided to perform this check, considering also the statement in PG-22.1:
Stresses due to hydrostatic head shall be
taken...
Dear All,
is UW-20 applicable to U-tube heat exchangers?
ASME VIII Div.2 states that "Determination of tube-to-tubesheet joint strength is not mandatory for U-Tube tubesheets" (ref. Para. 4.21.1.1 (d)).
I cannot find any similar statement in ASME VIII Div.1, but it should be the same.
Can...
Dear All,
I've a doubt regarding the evaluation of the lowest stress ratio to be used to calculate Hydrotst Pressure for Heat Exchanger Shell Side.
I usually consider the main components for both Tube and Shell Side and I always consider exchanger tubes for both sides.
Actually I'm wondering...
Hi folk,
can anybody help my to understand the correct meaning of "cluster" mentioned at para. UG-36(c)(3)(-d)?
I'm trying to understand wheter my 3 openings (N4, N3 and N10) are 3 unreinforced openings in a cluster.
Actually they're unreinforced, I mean that, as per Code rules, they do not...
Dear All,
I'm facing some issues relevant to optional type flanges with my colleagues.
First of all, I'm quite sure ASME VIII Div.1 Appendix 2 doesn't specify any limit for the use of loose flanges (in case I'm wrong, please, tell me!!).
Based on that, in case I need to strengthen my flange...
Hi folk, I'm having a discussion regarding PFHT/PWHT.
If a vessel is to undergo PWHT, is there the need to PFHT the heads before PWHT?
I think there is no need, but someone is asking "where it is written".
I replied asking where is written that "there is the need", but I got no answer.
So, I'm...
Does anybbody know what to do in case I have a drilled blind smaller than 1"?
ASME B16.5 Table 6 starts from NPS 1.
I'm afraid I've to calculate blind smaller than 1" as non std in case I have to drill it with a central hole...
Thanks
Dear All,
I've to design a vessel using Titanium (SB-265 Gr.2).
Design T is 300°C and, based on ASME Sect.IID, it seems to me that no creep phenomena are foreseen (indeed no note T relevant to time-dependent properties are recalled for Titanium materials).
Is that correct?
Actually an old...
I've a doubt relevant to the meaning of parameter "c" shown in Details 1 and 2 of Table 4.2.9 of ASME VIII Div.2.
The sketches use "c" to indicate the leg of the weld, but I've a doubt it should refer to the flange offset, since the limit is "similar" to the one specified in Div.1 for the flange...
I'm referring to thread794-433284 and TGS4 reply:
QUOTE
The research backing up this Code Case was specific to WN flanges. When there is appropriate research on the other flange designs, we will likely update.
UNQUOTE
I'm realizing that a lot of people (me too!!) is facing problems in applying...
