Cant get my head around this, as I think Ive done it before under ASME, but cant recall how.
Im looking for some guidance in VIII-1 on a (large, 4") threaded end cap. The threads for the cap mate with the pressure shell. Below is a picture of the situation. Item 2 is the cap, with straight...
We have an issue with one of our orbital welding items, for which Im looking for out of the box ideas..
The issue deals with the Marangoni effect; the tube we weld is A269-TP316, and the other item - also SS316 - was found to have a too high (i.e. out of spec) sulphur content. The weld pool was...
ASME has posted a copy of the public review draft for B31.3 2024 on C&S Connect. A copy can be found here:
https://cstools.asme.org/csconnect/PublicReviewPage.cfm (a direct link seems to get invalid every day, so take this link and scroll down until you see B31.3 20xx and a download link...
Just like previous years (2021, 2019, 2017, 2015, 2013), for every B&PV Code edition, Walter J Sperko has made a nice Summary of Changes article for ASME Section IX 2023.
WJ Sperko is a member of one of the sec IX committees and bi-annually posts this very useful article for those involved in...
We're designing a piping system in 321H. Design temp. of the piping system is in the range 650-700°C. Wall thicknesses are less than 10 mm. Pipe spools are not PWHT-ed.
B31.3 allows this material for use above 538 °C only when note 30 is applied (1095°C min. heat treatment).
Sourcing of A403...
I recently got involved in some pipe clamp design that Im cosnidering for use on a samll pressure vessel lid/connection, and looked into Appendix 24. I also got a copy of Improved design rules for pipe clamp connectors by Stikvoort and Dekker.
Does anyone know if App. 24 of VIII-1 has been...
As a follow-up to this post, I'm looking for material recommendations for a simple ring I intend to use between a nut and fixed component, where the nut, due to threads, will exert a force on the fixed component once the nut is tightened. Purpose of the ring is to act as a sort of sacrificial...
We currently have a job where we need to design some 904L piping. The request is to use this material for a design of 300°C.
B16.5 p,T-ratings are OK for 300°C and even good up to 375°C. ASME II-D (Metric, 2019, page 248, lines 20÷27) lists N08904 up to 371°C.
B31.3, the piping code we're...
Hi guys, I'm reviewing a vessel design (VIII-1) and was hoping to get some assistance/back-check on something I cant seem to get my head around. Couldn't find any related older topics ..
A female threaded nut (pos 3) is used to push an insert (pos 8) on the shell (pos 1). The sealing is...
Just like last year, and every B&PV Code edition, here's a link to the latest issue of WJ Sperko's ASME Section IX article, which contains a summary of changes of the ASME section IX 2021 edt.
WJ Sperko is a member of one of the sec IX committees and bi-annually posts this very useful article...
A question I recently ran into; does anyone know what the definitions are of single run and mulit run under EN ISO 15614-1? Our application is orbital TIG welding w/o filler (i.e. 142, position PK), tube-to-tube welds in sizes 1/'4-1". Background is that we use WPS's with a multi-run process (a...
ASME has published a draft for public review of the new B16.5 edition. Comments can be submitted before the 1st of Sep 2020, to Andres Carrion (CarrionA@asme.org).
Link to B16.5-20xx.
Huub
- You never get what you expect, you only get what you inspect.
I was reading david339933's excellent post on NB's article about ASME IX article QG-106. This reminded me on a section in B31.3, which has a provision in 328.2.2 on Procedure Qualification by Others.
Assuming we're not talking subcontracted work here, isn't that contradicting with QG-106.1(b)...
Yesterday this webinar was hosted by ASME/Don Frikken, which details recent changes to ASME B31.3-2018 (which just became effective the 1st of Mar 2020).
Slides can be found here.
Huub
Something Ive been wondering quite some time, and can’t get grip on.
A lot of the vessels we do are quite small in size, say shell sizes vary from NPS 2" to NPS 8". They use a lot of standard pipe fittings, such as straight and reducing tees, ecc. and conc. reducers, pipe caps, and elbows...
Just like last year, and every Code edition, here's a link to the latest issue of WJ Sperko's ASME Section IX article, which contains a summary of changes of ASME section IX.
WJ Sperko is a member of one of the sec IX committees and bi-annually posts this very useful article for those involved...
Yesterday I had a discussion with our CAD drawing department, which Im getting more involved with lately mainly on the GDT aspect.
I asked them what our current decimal marker is; the dot. (We are in the Netherlands by the way). I told that most (EU) standards, if not all, use the comma as the...
Does anyone happen to know if EN 13445 specifies similar prerequisites to minimum thicknesses (of heads, shells) as that what is specified in ASME VIII Div 1 UG-16(b)?
Ive been reviewing WRC 489 and it seems a copy (as good as identical - exact same wording and sentences) of API RP571. API seemed to be first with its publication (2003).
WRC doesnt refer to API, nor vice versa.
Does any know hwat the deal is with this?
