Dear forum,
Could you please advise me with the following:
Piping is insulated and covered with lagging (metallic lagging)... as shown on the picture....
What materials normally is that ? Is it galvanized SS sheets ? Might it be some other metallic material ? And what is thickness of it...
Hi EdStainless ... i would like to have a basic understanding in the fields that I directly or indirectly encounter.
Somebody tells me we need whatever hours to shoot this and i would like to learn why and how....
I also do remember your very educative responses to my posts / questions...
Dear Forum,
Please help me to find an explicit formula to calculate the time for RT exposure (NDT of piping).
I want to build that formula in excel. There is a tool for example "RT toolkit" for android, however i want an explicit formula and table of parameters that go in that formula -...
Dear David,
Thank you for your response the welding detail provided in the attached snippet (in the first post) and full RT can warrant using E=1.0?
The full RT was done on the weld ... however the weld is single V groove but having "sealing run ground" weld on the other side (as i understood...
OK Got it Thanks Snickster ... So it is V butt as welded (one one side) and sealing run ground (another side)...
The second question that still confuses me what weld joint efficiency should be used from Table Table UW 12 ?
This to calculate pressure shell wall thickness (having in mind weld...
Dear Forum,
What does the welding detail mean in attached file ?
Weld on arrow side ? But what are circle and arch like markings adjacent to "V" ?
And what weld joint efficiency it would need E=0.9 from ASME VIII Div 1 - Table UW 12 ?
Design pressure is 14 bar....
Even if it is a typo 6 " also would not have that thickness...
Suppose it is a "gun barrel" or "heavy bore" piping - is there some kind of standard for such thick "things" ?
Dear forum,
There is a vessel constructed to an ASMVE VII div 1 code (At least as datasheet says).
Vessel nozzle spec says: 4", wall thickness 1.305"
But, in schedule table there is no 4" pipe having thickness 1.305".
Maximum thickness for 4" pipe is 0.674" = 17.12mm (XXS).
Having done...
Dear forum,
I have I noticed a following - a flange face and flange interior have different magnetic properties rather than its outside surface....
The magnet sticks strongly to a flange from outside and very weakly to a flange face ....
Vessel Nozzle neck has the same behavior - from outside...
Dear Forum,
Your advise is needed.... in what cases the flange faces are coated ?
I have a spec where 20 mills coating thickness is specified on sealing face of a flange (RF flange ).... 20 mills makes 0.5mm and this is the order of depth of the flange face rings.
Isn't the sealing capability...
It says that variation of thicknesses (Coefficient of Variation) in general metal loss assessment in API 579-2 / ASME FFS-2 part-4 should not be more than 10% of neighboring locations. Therefore can we define a general metal loss within an area of grid - it is an area where the neighboring...
Dear All,
Can you advise me any resource link for learning API 579 FFS-1 general / local metal thinning case study... with some basic examples / calculations....
Thks
Ed
Stainless,
Could you kindly please a little bit in more details what do you mean under "but more likely related to either manufacturing or the installation"?
