Recent content by andyecho

Hi I work for a company undertaking first works to D1.1 (Aramco requirement). We normally weld to ASME IX or EN 15614 We are welding skid bases of which a typical corner weld is as attached (CJP with back gouging - single bevel groove weld 4 P99 2020 Ed). S355 J2 material Am I correct that 1)...

Got side tracked with other issues thanks for replies. My gut was that it had to be consistent units and that is what I applied

Thanks to both of you Thought it was worth checking, I noramlly design pressure vessels so didn't have a feel for "normal" values

Hi I have a query regarding unit of required area given by equation in 5.10.5.2 I have a very small tank design to API 650, diameter = 3m height = 4m If I use units for equation, D (m), p (kPa) (value 1.87), Fa (N/mm2/ Mpa) (value 160) I get a required area of 0.08mm2 Can this be correct...

I work for PED certified vessel manufacturer in UK and our notified body says that all PED relevent documentation is to be kept for 10 years - material certs, NDT reports & personnel records, test reports, welding records, PED declarations of conformity & other info required by Annex D. Not...

Many thanks for your answers I think Fawkes has hit nail on head as far as I thought. Our 97/23/EC qualification (Module H) requires us to show a quality control method as applied to pressure vessel design and fabrication and show sufficient knowledge to enable us to self certify vessels. I...

Thanks for reply - I realized U stamp for ASME vessels but did not know requirements may change in 2007 issue. This is released this month isnt it. I'm trying to get a feel for how difficult U stamp is to obtain, knowing the experience that we have in uk fabrication (we have made non-stamped...

I work for uk vessel fabricator - ISO 9001 and PED certified. We are looking at obtaining U stamp and would appreciate comments on the difficulty of this and how long such certification takes. We generally sub contract design, NDE (though I am qualified mech eng and have done many vessel...

Hi A question concerning peoples experience about combined stress limits for local loadings due to attached piping. I am undertaking with a colleague a piping analysis for which blast loads have been specified. As is usual the terminations at the vessel have maximum loads specified by the...

many thanks jt not something I 've really bothered with myself, I generally use PD 5500 which just does not allow thin ends, but the results I get show its something I shall keep an eye on in future Andy

Firstly, apologies for originally posting as a reply to thread 794-71353 instead of starting a new thread, can you delete an incorrect reply? my question there seem to be a number of discrepancies in (f)(1) in my copy of code 2001 A03 can anyone clarify ? subsection d) I assume 'T' in...

Many thanks I suspected must be the case but did not think of (K+1)/k It makes a large difference. So much so that at their low set pressure of 7.5mbar all the existing openings are too small maybe they will have to investigate other options ak

I met end user on Friday and confirmed must go with existing manways at present. Also noticed that equation 3 does not make sense because k > 1 , P2^(2/k) always less than P2^(k+(1/k)) and hence SCFH value incalculable (root of -ve No.) Is this a misprint? should it be (P2/P1) raised to power...

Lid fully opens to allow full flow, and so may be designed as orifice plate but it would be nice to compare with API 2000 capacity equation 3 so question abot 'k' definition still there. The end user is stuck with whats there for at least a year until next shutdown ak

Too late, unfortunately. The client added the hatches and thought about the design later. So still after definitions ak