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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 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...

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...

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

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

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...

I am working on brittle fracture analysis of existing vessel. I am checking all the components of the vessel to see how much temp we can reduce for each component and what could be the lowest temperature we can achieve in accordance with UCS-66 & UCS-67. I am confused in determining the...

Does anybody know the existance of the software that does the API 579 Sec 3 Brittle Fracture Analysis?! Best regards, Hiren

Hello all, If the MAT(Miminum allowable temperature)for any vessel component is determined based on Charpy impact test, than can you still redused MAT for that component while performing Brittle fracture Level 2 analysis using API 579 section 3. Thanks a lot in advance! Hiren

I am analysing the vessels manufactured befor 1990 for Bittle fracture analysis using API 579 section 3. I read through this standard and I have some doubt. I would really appreciate if you can give some clarification for my better understanding. Back ground: Charpy impect test is performed...

Hello All, We have vertical Condenser designed for concurrent flow. Vapor Inlet at top tubeside and Brine inlet top at shell side. Shell side inlet and out let nozzles are at 90 deg to each other. And the baffle cut for the 1st baffle at the inlet is parallal to nozzle inlet. How does it...

Hi, How do I determine if I required the Expansion Joint for shell and Tube heat exchanger(fixed Tubesheet type)? Following are the max temperature for each condition listed below. Design Conditions Shell side P(psig)=150 Temp(min/Max)=32/250 deg F Tube side: P(psig)=150/FV...

Hello Reader, I am buying Heat exchanger with Tantalum Tubes(B521-UNS R05252). Can somebody please guide me what are the Testing requirements for the Tantalum Tubes. I would appreciate quick responce. Thanks Mechmania

Hello All, I am a Green Horn, Mechanical Engg.(10 month old in Proff.career). I am preparing Eng-Specification for the shell and Tube Heat exchanger. This one is small size exchanger(AEL Type-Shell & tube 1 Pass each) ( over all Surface area 143 sq.ft) w/Tube Length 10 ft , No of Tubes =109)...