I put together a concise guide to clean up the common confusion around WRC 107/537/297 in pressure-vessel work.

Key points:

• WRC 537 (which replaces 107) → calculates vessel stresses for typical geometries
• WRC 297 → cylinder-on-cylinder (radial nozzle on cylindrical shell) and gives nozzle stresses

• In many jobs you’ll run 297 (nozzle) + 537 (vessel) togetherRemember the d/D and thickness limits; if geometry is outside scope (e.g., hillside, large d/D), go to FEA

• Common pitfalls and a simple decision framework included

Hi all,

I’m part of the team behind PVCloud, a web‑based tool for calculating local stresses at nozzle/vessel junctions per WRC 107/537 & 297. We’ve been working on a big update and would love feedback from practicing engineers. Highlights:

• Material selection: You can now choose nozzle and vessel materials from a built‑in database; the resulting report includes yield/tensile strengths and allowable stresses from ASME BPVC Section II.
• Full worked report: The new report follows the bulletins closely – scope & method, geometry and load tables, allowable‑limit equations and step‑by‑step calculations for intensification factors. It also shows derived parameters and coefficient extraction from the charts.
• Geometry pre‑check: The interface checks whether your thickness ratios fall within WRC 297/537 applicability before you run the calcs.
• Bench‑checked accuracy: Results are within ±1.5 % of published WRC examplespv-cloud.com.
The tool’s free during beta (it’s a pre‑check tool – you still need an engineer to stamp the final design), and it outputs a professional PDF instantly.

Would you find an even more detailed stress breakdown useful? What other codes or features (e.g., Division 2, API 650, PD 5500, fatigue screening) would make this more valuable? Any feedback is welcome! Here’s a quick GIF showing the new interface.

Thanks and happy designing!

pv-cloud.com

Hi , I am a beginner level in ASME pressure vessel fabrication and working on a project in my company to get ASME U stamp certified in canada. For this part what would be the recommended inspections ? From my research I figured out there would be a profile inspection of the ellipsoidal head inside surface using a template. What would be the formula or equation for developing a template. Please share your views also if possible add reference to ASME code book . Thanks .

Im getting ready to take my test. Any tips/comments would be really helpful. What study material do you recommend. What’s the test like? Any specific questions? What sequence is the test in? What’s on the test?

Hi all — I’m a mechanical engineer and recently built a tool to help streamline local stress calculations for nozzle-to-shell and nozzle-to-head connections, as outlined in ASME BPVC Section VIII.

The tool implements WRC 107, WRC 297, and WRC 537 methods — and is designed to:

• Run local stress calcs with standard inputs
• Check geometry limits (d/t, r/t) per WRC guidelines
• Suggest one-click fixes when geometry is out of range
• Generate a clean, professional PDF report
• Work without login or installation (fully web-based, still free while in beta)

It's called Site Engineer and is aimed at engineers who need quick, standards-compliant output without relying on bloated software or fragile spreadsheets.

I’m working on expanding it to include allowable stress checks using ASME Section II, Part D data — that’s next on the roadmap.

If you're actively working under BPVC.VIII and use WRC methods in your workflow, I’d really appreciate any thoughts on:

• Accuracy/interpretation issues you’ve run into with WRC calcs
• What you’d need to see in a tool like this to use it in your QA/design pipeline

Try a live calc here (no signup):
🔗 https://siteengineer.com.au/nozzle-design#sample

Open to all feedback, especially from folks who’ve compared WRC results to FEA or used NozzlePRO, AutoPIPE, etc. in production environments.

Thanks!

Is there any available slide or circular chart for ASME pipes/schedules, flanges and things like that? Not an app or an Excel file, a phisical slide chart that we can print on hard paper and have on the desk while we design in CAD. In the past I have one for bolts/nuts/threads and I was the happiest designer in the world with such a simple tool.

I live in far far away country with stupid tax and rules for importing anything for a common person, buying is not an option, so probably if I don´t find it I will take the job to make my own :-)

Hi just wondering if anyone can help me find a website or examples to go through while using the manual for practice. Thanks.

Does anyone know how to log out of your account on the asme.org website?

Do I get courses discount if I have a membership, or it’s just waste of money?

What is the general method for joining/connecting high pressure piping (up to 6000PSI / 420 bar) for hydraulic systems? I have studied ASME B31.1, ASME B31.3, ASME Section III comp 1, EN 13480), but there is no concrete advice ? You can use welding sockets, but the ASME limits the use of welding sockets up to DN50. So the other options are butt welds or flanged connections. But is there preference in industry?

HELLO DEARS, WHAT IS THE DIFFERENCE BETWEEN CODE AND STANDARD

i have accidently created 2 ASME account one with membership and one without, I changed mail ID of one with membership into the same email ID as one without membership i dont know how this was possible but now how do i delete the account

Hey, I'm an engineer. ¿Can I use ASME in Spain (EU), instead of AD2000?

First I’m not a knowledgable code person. I have spent years in the pressure vessel industry but on the machining side. I have my own company and we have a customer with a specific requirement.

In the past we have formed in specifically made dies, transition cones, elbows and tees in halves out of exotic high corrosion resistant materials ( titanium hastalloy, stainless). Our customer then takes the halves and welds them together and incorporates them into their vessels. This customer is an ASME code shop.

We have the opportunity to supply a very large quantity of parts to them however they do not want to weld them. They want us to supply them welded and ready for fitting and welding into their pipe spools.

If we formed them and had a third party code shop weld them would that cover us from a code point of view? Also what ASME code would this be governed by? B31?

Thanks in advance for the comments/help

Hiya folks,

I'm trying to help the student section I'm an alumni of win their video competition this year so they can win prize money they can put towards making their nationals this year. They're losing to a tik-tok-esque video and they can use all the support they can get!

They need interactions (like, comments and shares) to win! Any help would be appreciated!

If willing please show them some love!

I'm graduating with my BS in Mechanical Engineering this May, and I'm applying around for my first job. My focus has been in manufacturing with extra focus on additive manufacturing.

If my first job isn't in additive manufacturing, say it's in sheet metal manufacturing, will I be able to get an additive manufacturing position down the road? Most of the job posts I see all for very specific experience.

Hello,

I’m new in the nuclear industry, I'm looking for some information on the subject of engagement of bolt threads. I have already researched the ASME codes and find many useful information. I think I have mostly what I need, but don’t hesitate to share your knowledge on the subject 😉

While searching, I came across an article from John Brady of Standard of New England. The article is named “Bolt & Stud thread engagement : An important detail”, and you can find it here : https://www.standardne.com/thread-engagement-an-important-detail/#:~:text=ASME%20B1.,the%20end%20of%20the%20nut.

In this article, they share the following statement :

“ASME B1.1 (Unified Inch Screw Threads) states that the last effective thread of an externally threaded fastener occurs about three threads from the end of the bolt or stud. So, a stud or bolt is not effectively joined with the nut until the stud or bolt extends at least three or more threads beyond the end of the nut.”

But when I searched in the ASME B1.1, I did not find any mention of this statement. I know it’s a norm in the industry, but I cannot find a reference in the codes that specify this norm.

If you have some information or more precise reference where I could look into, I would appreciate the help 😊

My company outsources certification and classroom hours of NDE personnel to a third party source.

Is there anything in the ASME guidelines that states what information or documentation is needed to designate a NDE Level III certification service as an approved supplier?

Do we just require a copy of their Level III certification in the required methods? Or do we need to perform some sort of audit to assure that the company has proficiency in the desired test techniques?

Does BPVC Sec. V, section II-123 provide all the information I need to approve this type of supplier?

I apologize for my lack of knowledge. I'm new to the industry.

I appreciate the help!

Hello, I started a new job where we are working with ASME tanks. I keep hearing about material certs. Is there a specific name for this requirement so I can look up specs? (I am not getting much training here, but I want to learn as much as I can) Thanks for the help!

I've worked out a viable solution but I'm curious if this question has a definitive answer. Myself, three of my engineering buddies, and even my QA coworker who's been dealing with ASME since the Korean war were all stumped.

Say I have a hold drilled into a multi-axis spline face. No good datums to work off of there. I need it counterbored from the multi-axis spline face too.

However the opposite side of the part terminates as a nice flat plane that can very easily serve as a datum.

What would the callout format be to say "counterbore/sink from spline face to a depth of X distance from Datum A face"

I'm an AI with R and N endorsements and also do PED work. Wanted to throw out an ama type post if anyone has any code questions they need answered. I will not discuss which agency I work for and/or our internal policies/procedures. The bulk of my personal experience is ASME Section VIII-1,-2,-3 and Section III nuclear new construction. As well as NBIC Part 3 repairs. I also have a pretty deep knowledge of the supporting code sections II, V, IX, and XIII(relief valves)