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Thanks DekDek for your kind reply. Because it is acceptes the use of Rt or UT is the reason why we changed to UT actually. But we have the problemas now with the tests of the repairments, It would be great to find something to support the use of UT in a Weld repaired, and tested the original...

Hello everybody. I would appreciate anybody could help me with this issue. We are working in the construction of a plant, and nowadays we are trying to find piping material urgently, because we are finalizing and we have some lack of material piping CS to finalize. Material has to be according...

Hello all, I have a question regarding piping re-examination, I would appreciate anybody could help me! WE are installing piping CS in a plant, in compliance with ASME B31.3. It was required 100% RT/UT, and piping were inspected by RX. Unfortunately, there are some of them which were found with...

Hi all I am trying to find out how to solve a proble, I am facing now: I have a square connection welded to a pressure vessel (Calcualted with ASME VIII Div.1) with several nozzle loads For nozzle loads issue, I am used to work with WRC107,because normally we work with round connections...but...

Thanks rmw I know it is in the otehr forum, but I have thought that as what I actually need i an ASME Code definition, this would be a good forum Therefore, definitions from wikipedia..no useful either

Thats exactly what I would need! But it should be an "offitial definition" so that it can be considered as "contractual" if the code is applied. So,if somebody finds something similar to this... Thanks a lot unclesyd

HI LST hill, My next step will be to ask the question to the Code, but I am involved right now in a discussion that I need to solve. So it will be useful for the future, not now. I didnt find any interpretation for defintion of hub, only found this one: Interpretation: V111-1-01-18 Subject...

I will please appreciate if somebody tell me where the ASME COde defines "hub" or gives minimum general requirements so that a hub is defined

I know unclesyd, But what I need it is a clear defintion (preferably given by the code) so that you can say that hsi is a hub or this is not.

Thanks unclesyd But I would like an "offitial" definition, a I had a similar idea of what a hub is to yours, a projection from a surface (noy only flange) in order to use it as attachment to be weld, but I dont find it in the code, so that I can apply to detail in fig. UW-13.3 and stablish...

I am weldin a flatside with another one using a hub, following te figure of ASME VIII Div.1 Code UW-13.3, but my discussion has derived to what a hub is

Thanks Mike I agree with you that at least seem to be the logic thing to do! But I am really surprised that the code "allows" that. I havent found anything that contradicts that Lets see if somebody find something Mydea is that that detail are weld with hub, and if weld encroach on"e" thickness...

Thanks MRBTU!!...but the hubs shown are only for flange, and I would eed something more generic, and in particular, when it is referred to a butt weld joint (not only for flange connections)

I have a discussion with a manufacturer and my colleagues regarding the detail UW-13.3 (b)for butt wled connections: Can the edge of the bevel of that weld be closer than "e" to the outer flat face? And as I think that maybe is not too clear the question....I will try to explain in another...

Hi all, I was having a look to the Code, trying to solve aproblem with a butt weld, and I have been searching for the definiton of hub...and didnt find anything in ASME VIII Div.1! Can anybody tell me if ASME Codedefines "hub" or give minimum dimension/requirements so that a "hub" is a "hub"?

Thanks for the info...but I only find data for long wave, not for short as needed for solar radiation...any help?

Hi all, I am performing some calcualtions to consider solar radiation in temperature for an structure, and I would need the values for absortancy for that. For (landa) aprox. 0.5 micrometers (solar radiation) and (landa) aprox 10 micrometers (low temperature) The structure will be plain carbon...

Thanks IRStuff I want to know if there is "easy solution" for calculating temperature (or temperature increment) due to radiation, when KW/sqm (Q/A) is known 27ºC rise is the data given, to be used when any element is exposed to the sun (solar radiation) Hope more clear now?

If we have an structure exposed to radiation from a flare, how can we consider it for design temperature purpose and in order to install expansion joints, etc...? The problem we are facing now is a structure installed nearby a flare, where it is indicated a radition intensity equal to 15,8 Kw/...

Moltenmetal REgarding the longitudinal efficiency take into account that most materials for welded tubes for heat exchangers requires RT and efficieny is 1, identical to seamless....you cannot use thinner thcikness changing from welded to seamless