Hello,
I have a nozzle with weight and operating loads:
Weight forces = 1000 kN;
Weight moments = 20000 kN*m
Operating forces 1000 kN
Operating moments = 30000 kN*n
and I am using Nozzle Pro to check the stresses on nozzle shell junction by FEA.
I added in the software loads as Operating only...
Hello everyone,
I have a vessel NPS 26 with a nozzle NPS 18 where there are nozzle loads in the design combination with:
- dead loads + seismic loads.
The code is ASME VIII DIV.1 and with WRC 537 I checked dead loads and seismic loads as they would be separated load cases and then I used a Fea...
Hello guys,
I am designing a pressure vessel with low pressure 15 psig but at high temperature 1025 °F in stainless steel 347H.
It would be very easy if the vessel would be circular, but it is a rectangular vessel Size 4 ft x 6 ft.
I started with 0.25 in but it seems to me the stress due to...
Hello everyone,
I need to consider a load case with Nozzle Pro in order to verify a nozzle but I don't understand if the program can consider the load case combinations.
For example if I have an operating weight + occasional load (the picture is only an example) how can the software combine...
Hello,
I have a nozzle with high loads that doesn't respect the ratio Rn/R and I need to follow U-2(g).
In this case I have two options:
Follow appendix 46 but in this case I need to use a very thick nozzle in order to verify primary stress;
Follow ASME VIII div.1 with a thinner nozzle neck...
Hello everyone,
In the stress analysis due to nozzle loads with fea from the future I need to use Nozzle Pro program.
Do you know if there are limitation with this program when we have thick cylinder or thick self reinforced nozzle?
I can't modify mesh or finite element type with this...
Hello,
I am studying tube - tubesheet connection during hydraulic expansion.
I used Podohrsky book and I understood how to calculate the limiting pressure and adesion pressure but I don't understand how to calculate the pressure when tubesheet starts with plastic deformation.
My idea is to use...
Good Morning,
I need to do hydraulic test pressure (Stress results) on heat exchanger in corroded condition.
In my case MAWP = Pdesign, but I can't activate in Compress the option to do the calculation in field corroded condition.
(I have 3 mm of corrosion allowance for each component of the...
Good evening,
I am checking exchanger tubes in SB-111 061 C44300 under internal and external pressure with ASME VIII div.1.
I have a internal design temperature of 100 °C and external design temperature of 185 °C.
In accordance with ASME IID note G6, the maximum temperature for external pressure...
Hello,
I am doing a replacement of existing item (heat exchanger AES type) and I have seen there is a number of tie rods lower than minimum required by TEMA for tube bundle.
Which problem could we have if we don't respect minimum TEMA for tie rods? (we don't have to do thermal design)
This is...
Hello,
In the calculation of tubesheet thickness by TEMA "R", I have a heat exchanger BET Type (without rear main flanges) with fixed tubesheet not extended and floating tubesheet not gasketed.
If I read TEMA I can see for all floating tubesheet I have to use G for floating tubesheet = G of...
Hello to everyone,
Is it possible to use a process nozzle as Vent in Shell Side of Heat Exchanger?
I have been looking for in TEMA but I can't find a paragraph where I can find this thing.
Hello,
I was studying the nozzle junction stresss in coincident of external PAD outside diameter and I have seen something I don't understand.
I have a cylinder NPS 24 thk. 10 mm with a nozzle opening of 400 outside diameter thk. 14 mm by plate.
Around the opening I have a reinforcing pad O.D...
Hi everyone,
I don't understand how to calculate bending stifness of an expansion joint (flexible shell element) against bending moment.
Does someone can help me please?
Hello everyone,
I am looking for dutch legislation for pressure vessels.
The correct name should be Stoomwezen RToD, dutch law pressure vessels.
Does someone know where I can find out this law? Is it available in pdf?
Thank you
Hello,
I would like studying better the stress analysis of junction between nozzles (opening) on flat head by formula.
Someone has pdf or can suggest me where I can study this problem?
I don't want to use finite elementh method program, but I want to study the problem from the theory.
Many Thanks
Hello,
About yield strenght of stainless steel material, ASME uses 0.2% of yield strenght.
How Can I have the 1% of yield strenght for the same material?
I can't use tension-strain relationship because I don't know the value of Stress at 1% of yield strenght.
I have seen ASME II A, IID, VIII...
Hello,
I was checking a shell of pressure vessel under external pressure using two different materials at 150 °C and Full Vacuum (103,4 kPa).
I don't understand why, using ASME VIII div.1, with duplex material I have a thickness higher than Carbon Steel material due to external pressure only.
If...
