Search results for query: *

Hello everyone, Is anyone aware of industry guidance that discusses how to apply wind/seismic loads from the National Building Code of Canada (NBC) to the design of ASME VIII-1 pressure equipment? The issue I'm dealing with centers around the different design basis of the two codes. NBC-2015...

Hey everyone, Grammar question here for interpreting codes... API-570 paragraph 8.2.8(d) - associated with closure welds: d) MT or PT shall be performed on the root pass and the completed weld for butt welds and on the completed weld for fillet welds. Question: for socket weld closure welds...

As these are BEU style heat exchangers, you're going to have a pass partition plate in there somewhere. Take a read of Paragraph UHX-4(b), you may have a hard time using standard B16.5 flanges. Cheers,

Re: thread794-420069 In the thread linked above, weldstan stated: Does anyone have any references to column failures that occurred due to in-service weld repairs? I did some online digging and nothing jumped out at me. Thanks, Marty

Thank you everyone, I think I understand where to go with this. I'm still new to the world of in-service inspection. I'll need to be careful with my wording in the long-term. ;) I'm already signed-up for a course starting in May. I'm really looking forward to it, and getting some early...

Thank you both SnTMan and GD2, it is very much appreciated.

Hey everyone, I was reviewing some in-service inspection t-min values for an ASME VIII-1 vessel. Currently we are setting the initial t-min value for piping nozzles as t-nom - CA. For a 12"-sch.120 piping nozzle with 1/8" CA for example, this would be 1" - 0.125" = 0.875". When the nozzle neck...

Very clear and concise. I think this approach cleanly follows all code rules. I don't think this approach follows the codes. Take this to the extreme and think about a 1/2" CL150 blind flange with t=0.38"+RF=0.44". If you have a corrosion allowance of 1/4", your blind would be reduced to 0.19"...

I dug through many old threads hunting for the best path forward to handling inspection for B16.5 blind flanges, and can't find any solid recommendations. I'll lay out the issue, and provide some discussion, but I would love to hear how you all approach this issue. When blinding a standard...

Many times I can find dual certified bar/forgings to SA-479/SA-182 for materials such as 304/316ss. You might be able to find a forged bar to SA-182-F317L?

Are you familiar with Nonmandatory Appendix S? If not, it is worth a read.

Thank you all for your responses. Geoff13, I think you've accidently stumbled across a key change in the code wording! In 2017 paragraph UW-13(e)(2) was: (2) For flange rings of bolted flanged connections, the sum of a and b shall be not less than three times the nominal wall thickness of the...

It's been a long while since I designed equipment utilizing a reverse flange. We use Compress for our design calculations, and I was surprised by the specified weld size they came up with. I brought this up with Compress and they referenced a code paragraph that I'm not sure applies. I'd love to...

We fabricate very few lethal service vessels, and I don't think I've ever designed one with lap joints... interesting reference! Thanks, Marty

I've been having some disagreements with colleagues regarding fillet weld sizing on the back-side of fabricated lap joint stub-ends for use with standard ASME B16.5 lap joint flanges on ASME VIII-1 equipment. Any other perspectives would be much appreciated. Perspective #1: ASME B16.9 Table...

Is the original manufacturer still in business? If so, I'd recommend your first course of action should be to contact them and ask if they have any documentation remaining. If so, they may be able to provide a copy of the U-1 form, and could generate a replacement nameplate (per NBIC).

One resource I've used in the past is AB-520 (Finite Element Analysis (FEA) Requirements Regarding the Use of FEA to Support a Pressure Equipment Design Submission) from the Alberta boiler branch (ABSA). They discuss the following approach in the section titled Presentation of Results...

Agree with SnTMan Just a small clerical comment - the term MAEWP was dropped in the ASME VIII-1 code in the 2013 code edition. Proper terminology is now to refer to it as MAWP Internal or MAWP External. The acronym MAEWP should no longer be stamped on a nameplate, instead you should be...

Just be careful that all welding is done to ASME IX.

The intrados/extrados calculations will result in three different required thicknesses for the pipe after bending. [ol 1] Internal surface of the bend: t-min = (244.9687*2.37)/2[(20000*1*0.86/1.32)+(244.9687*0.4] = ti (t-internal) External surface of the bend: t-min =...