Applies To Product(s): AutoPIPE Vessel, Version(s): V8i Environment: N/A Area: FAQ Subarea: Original Author: Bentley Technical Support Group Comments, Questions, and Answers: 1. Vessel Properties - FAQ 2. Tube sheet Layout - FAQ 3. Output Report - FAQ Question #1: What can I do when I get an error by specifying a Body Flange type of gasket when this is on vegetable fiber using Annex G for controlling the bolt stress. I noticed if I calculate the flange without annex G I’m not getting a default to choose another gasket material. I’m also a little troubled about the calculation with Annex G for a ring type joint gasket. In the calculation it calculates in item G.6.4.1 gasket seating and the outcome is very Low, giving low forces. Answer: This configuration was not properly considered, please consider using one of the following solutions: Option #1: Use any other type of gasket, eg. elastomer or PTFE. Also increase the gasket thickness to larger than 0.00 (if you are using Design Check method you need to specify adequate dimensions). Option #2: This issue has been logged under TFS 69201 and will be fixed in the next version of the application (33.02.00.04 and higher). Question #2: When choosing a 8" nominal shell size the O.D. is reflected as 8.78" O.D. (it should be 8.625"). Why? Answer: That seems normal, taking into account that your heat exchanger is requested to use the internal diameter (see general geometry dialog) The input for the shell is 8 inch NPS Normally an 8 inch NPS pipe has an external diameter of 8.625 in. Since the model is defined with internal diameter as shown on the General geometry dialog above, the software starts with an internal diameter equal to the 8in NPS value. If your wall thickness is equal to 0.25 in 8.625 + 2 x 0.25 = 9.125 in The problem does not occur if you choose in the general geometry dialog the option "Nominal" and select the pipe size. Question #3: How to import Aspentech edr file into AutoPIPE Vessel? Answer: Please follow the steps below: step 1: step 2: step 3: step 4: step 5: Click OK to generate the exchanger model. Question #4: How does one model supporting an inner vessel from an outer vessel in AutoPIPE Vessel? Answer: This can be done using a jacketed vessel design module that exists in AutoPIPE Vessel. Vacuum pressure can be applied as ‘0’ external pressure on the inner vessel (chamber 2) and as ‘0’ internal design pressure for the outer vacuum chamber vessel (chamber 1). Final generated vessel 2D and 3D representation in the GUI. Please see answer to Question #5. for “supporting inner vessel inside outer vessel” query Question #5: Can point loads or distributed loads be applied to the shells or heads? .to represent inner vessel supports? ..Outer Vessel stairs and platforms ? ... Pipe supports, etc.. Answer: Yes, there various local load options available whereby a concentrated local load (not a pure point load) can be applied via a narrow nozzle (2”) and applying radial loads (inward or outward). In main menu, selections from various local load methods (eg. PD5500, EN, WRC etc.) are made available. Here eg. WRC is being applied. If the inner vessel is structurally supported on the top from the outer vessel, it is simulated by applying an equivalent load on the nozzle (N1) radially inward eg. -10,000 daN. Question #6: How does AutoPIPE Vessel handle code required or user define load cases? (Question elaborated as during the demo - How does AutoPIPE vessel handle load combinations. Does the user have the ability to create combinations like AutoPIPE or is everything automatically calculated with code calculations?) Answer: Sustained, Thermal and Occasional loads for nozzles can be imported from AutoPIPE directly. AutoPIPE Vessel combines the load cases in the following manner automatically for calculations (user defined load combination like AutoPIPE not possible): In function of cases input, Combinations of local loads are generated: Question #7: Can transportation load cases be user define such as shipping acceleration load cases. Answer: Wave motion module allows entering vertical and horizontal accelerations as during shipping: Question #8: The literature states pipes can be modeled. Does one need to purchase AutoPipe to model B31.3 pipe? Answer: Yes, one needs to purchase AutoPIPE since AutoPIPE Vessel does not support B31.3 as it is a piping code. AutoPIPE Vesel is a pressure vessel and heat exchanger design software (also designs tanks, air coolers and boilers) and supports pressure vessel design codes, it has ASME Sec. VIII Div. 1 and 2 capability as well as EN, CODAP, PD5500, NFE, GOST, AD. Question #9: Does AutoPIPE integrate with AutoPIPE Vessel? Answer: Yes, nozzle loads can be directly imported from AutoPIPE. Question #10: Can you tell me more about Automatic Drawing Production? What does this feature do? Is this an add-on or is it include in base price? Answer: 2D AutoCAD, 2D Microstation, as well as 3D AutoCAD, 3D Microstation and 3D SolidWorks models are automatically created from AutoPIPE Vessel. Export to Pro/E 3D model is not possible directly but it can be done by creating Microstation 3D model first and then converting that to Pro/E. Below is an example of a detailed dimensioned fabrication type sketch generated in Microstation: Check towards the end of this document for more examples. Drawing/3D model generation feature, cost estimation module are all included in base price at NO extra cost. Question #11: What are the strengths and shortcomings of AutoPIPE Vessel compared to PV Elite or Compress? What can AutoPIPE Vessel do that PV Elite or Compress can not do? Answer: See following WIKI page: https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/13476.summary-of-competitive-advantages-of-autopipe-vessel-over-the-competition.aspx Question #12: With which criteria Autopipe Vessel optimizes flanges? Answer : The process to optimize the flanges is to find the maximum of small bolts to ensure the sealing of the gasket. In AutoPIPE Vessel, 2 main choices can be done in the Flange dialog to obtain a compact forging in which the hub has a small length or a light flange with a important hub and a flange with a small thickness. Question #13: Why is not possible to input corrosion in a skirt? Answer : The corrosion allowance which may be inputted is due to the fluid. If we consider the "air" corrosion, how can we calculate the diameter of the elements of geometry? Is this corrosion applied at the same time as the internal corrosion? The best thing is to consider that the calculated thickness of the skirt should be considered as the corroded thickness. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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