Recent content by decode

gr2vessels, thanks a lot for your reply, I already found the solution. See Code Case 2655 (Suplement 3 of 2010) regards, Decode

I met in february an ASME PV Committee member, i asked the same question, no reply, and for sure nobody knows the why

INTERPRETATION BC-79-743 READS: Question: May materials used in pressure vessels or piping systems which have been in service be reused for fabrication of pressure retaining parts for Section I, Section III, Section IV, or Section VIII vessels? Reply: The Boiler and Pressure Vessel Code...

That is partially true, for instance UHT requires RT for non-butt nozzle to shell/Head joints, See UHT-57 and Fig. UHT-18.2 and those are corner joints. In fact they say "...radiographable with difficulty and generally requiring special techniques..." Decoder

What people used to call ASME standard head is the Torispherical Head defined in UG-32(e)

nco2612, The Code does not require you add the static head when you test a vertical vessel in horizontal position. Please check attached Interpretation which is still valid. Interpretation: VIII-1-95-27 Subject: Section VIII, Division 1 (1992 Edition, 1993 Addenda); UG-99(b) Date Issued...

It used to be a requirement of Section I, i need to check previous editions, but this is not currently in the 2007 edition.

BLYNN, It'll be useful to know why you are repeting PWHT, there are a lot of ways out to avoid it or just PWHT partially in case of some repairs. In general the Code does not require the whole vessel to be PWHT. Please advise us!

gr2vessels i agree with your proposal, i think the changes of Div. 2 are of such importance as to require a new Forum, i am now trying to get the new edition to begin to study. Any idea about how to get a copy? regards, Decoder

GRAMMA, FIRST OF ALL CHECK THE NAMEPLATE OF THE VESSEL, IF YOU FIND A NATIONAL BOARD NUMBER IN THE NAMEPLATE IT MEANS THAT THE VESSEL WAS REGISTERED WITH THE NATIONAL BOARD OF BOILER AND PRESSURE VESSEL INSPECTORS. IF SO, USING THE MANUFACTURE'S NAME AND THE NB NUMBER YOU CAN OBTAIN, PAYING A...

Is ASME VIII Div 1 UHX applicable to design calculations of Kettle Type Tubesheets?

UW-9(d) is what you need, this is specifically accepted under the listed conditions

I think in this case you may also weld another pad over the externel one as for layered vessels. In this case you need to provide 2 additional vent holes because you need to weld the new pad in 2 sections. There is nothing in the Code prohibiting this overlap of reinforcements i may give you...