We are currently fabricating replacement u-tube bundles.
The bundles are Figure UHX-12.1 Configuration D with extended flange, the gaskets either side of the tubesheet are the same configuration and as such no bolt load gets transferred into the tubesheet during normal operation.
The intent...
ASME PCC-1 Appendix O gives a joint component approach to assessing the assembly stud stress for a flanged joint. It states the minimum permissible bolt stress must be selected by the user and then goes on to say its typically in the range of 20-40% of ambient bolt yield stress. My employer has...
ASME PCC-1 Appendix O provides guidance for the determination of an appropriate assembly bolt stress for flanged joints. However, it doesn't explicitly cover blind flanges.
For weld neck flanges bolted to a blind flange (including heat exchanger cover flanges), a basic summary of how I've been...
Firstly, I understand there has been a number of queries submitted previously on similar topics, however, I couldn't find the ultimate answer I was looking for plus I also wanted to add some further code clauses, etc to the question to ensure no ambiguity.
ASME VIII-1 (Clauses UG-11 & UG-44)...
The scope of ASTM A333/A333M specifically states "Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on impact properties."
We currently have an issue where we have identified longitudinal cracks in DN300 47mm thick A333 Gr6...
Similar questions seem to have been asked in the past but nothing I can find for lifting activities.
We are looking at possibly tapping the outer diameter of some large blind flanges to attach a lifting eyebolt. I'm trying to understand if there is a minimum edge distance between the tapped...
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My question is a simple one today (or so I hope). I'm familiar with longitudinal baffle seals (ie, kempchen, etc) for Shell and Tube Heat Exchangers, however, I'm not familiar with any transverse baffle sealing systems.
We need something for a couple of baffles and they need...
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We have a current issue where we are having to replace existing undersized TEMA AES S&T Coolers (air compressor inter-stage coolers). The existing have a demister pad installed in the DN400 outlet nozzle and we intended to keep this configuration, however, during the design...
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My question relates to ASME VIII-1 2015 UG-140(b), specifically the interpretation of UG-140(b)(2) which reads:
(2) The decision to limit the overpressure by system design is the responsibility of the user. The user shall request that the Manufacturer’s data report state...
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My question relates to the final affixing of NBIC R-Stamp nameplates after re-rating an item of equipment.
We have a vessel which we may require to re-rate from 170degC to 180degC, this will reduce the MAWP from 890kPa to something closer to 850kPa. The expectation is that we...
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With regards to ASME VIII Division 2 Article 5.5.2.3 Step 4 (a) & (b). This relates to thermal cycles in vessels and determining whether a fatigue analysis is required. (For the purpose of this question, I'm ignoring pressure cycles)
I'm trying to understand whether this...
Hey Guys
Working through the analysis in Pressure Vessel Design Handbook (Second Edition) by Henry Bednar Section 5.2 Support Lugs Without Stiffening Rings and at the top of page 157 there is an equation for allowable compressive stress of the vertical gussets, this equation is:
Sa = 18000/(1...
