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Thank you SnTMan for quick response. When i read through the specs I see them as most Identical. See attached comparison I found that some has put together. So what prompt these client requirements? Is there some technical advantage of using SA765-II over SA350-LF2 Cl? Best regards...

Dear Friends, Reference: On High Pressure Vessel where we specify Self Reinforced Nozzle (Other Than STD ANSI LWN) which are mostly Non Standard Forging (Barrel Nozzles). These Barrel Nozzle can be constructed from Welding 2 Pieces (Boss Welded to FLANGE) or can be made as one piece...

Dear all, I have follow up question. Now i am in process of optimizing Base ring thickness! PV Elite Calculates base ring thickness based on Jawad & Farr Eq 12.12 t base ring = Base ring Width * (3* Sc/S)^0.5 This Still gives higher base ring thickness of 3.5" I checked Eugene F. Megyesy...

@ gr2 vessels: I figured out that in Base ring input Tab, on bottom right you have to select the Option " Use the skirt stress to determine the concrete stress for the simplified methot?"...this essentially means base ring is supported on structural steel and not on concrete foundation...

Dear All, I am designing Packed tower (ID:8.5 ft, TTL: 78 ft Skirt Length: 10.5 ft DP: 1050 PSIG/FV and DT: 175 deg F) This project concept is Modular Design (Dictated by Client) So this Tower be in Module. Tower base will be bolted to Structural steel. Since it being in module during the...

Thanks racookpe1978 and gr2vessels for your feed back. In my case the Head thickness is 67 mm (MOC:CS) and Nozzle size is 2 inch Self reinforced. What if I may not be able to move the Nozzle up at this point of time, is there additional NDE i may need to consider? Or i should not worry about...

Please see attached Sketch along with above written description. Hope i am clear now in what i am asking! regards, Mechmaniahttp://files.engineering.com/getfile.aspx?folder=828c1571-7163-483a-a77a-9cf8d95b5b61&file=W.E_to_W.E_Distance.pdf

I am looking for some clarity regarding what is the Minimum weld edge to weld edge distace considered. I have Nozzle welded to Shell and Weld edge to weld edge distance for Nozzle from Head to shell seam is 20 mm. This is Divison 2 vessel and Nozzle is Self-reinforced. It is welded as per...

metengr, Thanks for quick response. Grid UT, MT(100%) and Hardness check will be performed after rolling to make sure there are no defects. So as i understand from your suggestion that 300 deg F would not do much and its okay to allow them to cold roll the shell followed by above mentioned...

Yes, when I referred to API 934-C pre heat requirement, i was referring in regards to preheating before rolling. And yes the Standard says “SHOULD” so it’s more of a recommendation than mandate. The supplier is suggesting following in lieu of Pre heat before rolling. 1) UT (Grid wise 9" x 9")...

Hello all, We have a vessel with Shell material of SA-387-12 CL2 and shell thickness of 105mm.This vessel needs to follow the API 934-C requirements. API 934-C para 7.3.1 (Preheat) mandates that "All base metal should be preheat to a minimum of 300 def F during rolling. Out vessel supplier is...

Hello Everone, I have a questions about UBRS requirement. Do we need to fill out UBRS for FRP Tanks. It's an atmospheric tank. I am sure UBRS is required for Pressure vessels with FRP material if you want ASME RTP-1 stamp. Your reply would be really valuable. Thanks HK

Can we use SA36(bar)as anchor bolt instead of SA307B? The tensile stress for SA36 is 58-60 ksi and yield stress is 36ksi while tensile stress for SA307B is 60Ksi and yield stress is not given any where! Thanks for your input. Hiren

Friends, thanks a lot for answering my question! I was working on brittle fracture analysis of the exchanges.The case was shell side was esxposed to severe negative temperature at worst condition and while tube side was experiencing normal(not very negative) temperature.And I was checking...

In shell and Tube Heat exchanger Is Tube sheet considered to be the part of shell side or tube side?? Thanks

metengr, Then according to Fig UCS 66(Edition 2007 page 173 Sec Viii Div 1) note (2) and Note(3)(b),Should not the SA-350 be under Curve C instead of Curve B,as SA-350 is produced to a fine grain practice and is normalized or normalized and tempered or quenched and tempered? Thanks

Which impact test excemption curve SA-350-LF2 belongs to in UCS-66,2007 ASME Section VIII?The notes for the figure imply that forgings not listed would have curve B as applicable. Is this correct for SA-350-LF2?? Thanks Hiren

Sorry about it! Will take care next time! Regards,

Need Help interpreting UCS-66(b)(3) & UCS(b)(1)(b) Does UCS-66(b) (3) means: When the intended MDMT (not design MDMT) is between -55F to -155F and coincident ratio is less than or equal to the 0.35(lower threshold limit on UCS 66.1) than the component under evaluation can assume the value of...

Tom, Is not it correct that the SA-105 material's MDMT is restricted to -55F(accordig to UCS-66(b)(1)(b)) without performing the impect testing. Is n't it correct when the Intended MDMT(worst condition during operation) is lower than design MDMT especially below -55F than impect testing of...