Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: analysis Subarea: Original Author: Bentley Technical Support Group Comments, Questions, and Answers Note: See Flange Analysis Trouble shooting tips and tricks in AutoPIPE Item #1: See the following link for logged enhancements: Flange Analysis Enhancements for AutoPIPE Item #2: How to perform an ANSI Check Flange Analysis with AutoPIPE How do I perform an ASME Section VIII Div 1 / 2 or Appendix XI Flange Analysis in AutoPIPE? Item #3: On the Load tab, Operating Pressure field is limited to 3000 psi. Why? Answer : In AutoPIPE V8i 09.05.xx.xx and lower, there is an internal limitation of 3000 psi for data entry. A new enhancement (CAE-CR-11051) has been logged to increase this limitation. Item #4: Warning: The required information is missing for this AutoPIPE flange analysis Item #5: Flange Analysis report does not contain any results, only page headings Item #6: Using Tools Flange Analysis. Look-up dimensions for a 30" 150# B16.47 WN don't seem to be correct. AutoPIPE says it is 38.75" OD with 28 bolts, 1.25" Dia on a 36" bolt circle. B16.47 says it is 34.94" OD with 44 bolts, 0.75" Dia on a 33.31" bolt circle. Answer: These values are referring to ASME B16.47 - 1996. AutoPIPE use a different code year. Use one of the following methods see the code years used by the program. A. Please see the following AutoPIPE help section: Help Contents Search Tab enter "Flange Analysis Dimension Library" (include the quotes), press List Topics button, double click on the selected topic from the list provided to see more information. B. Select the help button from the Flange analysis dialog and navigate to this page using the hyperlinks. Item #7: Combinations are randomly selected for inclusion in the flange analysis, even when you are not doing one! They subsequently cannot be removed. Why is this and what is the selection criteria? Answer: It seems that the non-code combinations are orange as they are selected on the load tab on the flange analysis. You will have to go to flange analysis load tab and select combination to "None" to get rid of this orange color here. Item #8 The following is displayed in the report Flange analysis Output report: 1.0 ERRORS OR WARNINGS: ------------------ *** *** ERROR -- ( during INPUT PROCESSING ) *** Inside diameter of flange should be equal to inside pipe/nozzle diameter How to correct the issue? Answer: In the Flange analysis module, select the FLANGE tab. Review the all the settings and confirm them to be correct. Example: node point B34 (pipeID = 2"CHS) has a pipe OD = 60.325 mm.. Therefore the indide dia in the flange analysis module should be 60.325 mm. The flange analysis, FLANGE tab, node point B34: has a pipe inside dia.= 97.1804 mm . This is obviously an error on input settings. Suggest using the following process to reset all flange dimensions back to default library settings: 1. On the Flange tab, change Flange /bolt Dimensions to NS for all flanges. This action will turn many of the grayed out field white. good. 2. Next, change the same setting from NS back to the correct settings of B16.5 or B16.47. This action will gray out a many fields of data, essentially updating the data with information from the internal library file. 3. Recheck the Inside dia at node point B34: The value is 42.84 mm 60.325 mm. good. 4. Run analysis and check report. Item #9: The following is displayed: --------------------------- Bentley AutoPIPE --------------------------- The Gasket Material [SPIRAL-WOUND ALLOY WITH MINERAL FIBER FILL] is not available in the GasketMaterials Table. --------------------------- OK --------------------------- Answer: As this is an Warning / Error Message that appears when using the application, all types of issues like this are covered by "Warnings, Errors, Crashed, Confirm Messages in AutoPIPE" WIKI. This specific message is mentioned on the following WIKI page here , see Item #3: "The following is displayed when selecting a gasket material on the Gasket tab of the Flange Analysis module in AutoPIPE V8i 09.05.00.21:" Item #10: Does the flange analysis in AutoPIPE determine expected leakage rates? Answer: Flange analysis calculations does not calculate a leakage rate, just that if the results are lower than the allowable that the likelihood of a leakage at the flange is probable. See the online help for A. "ANSI Flange Loading Calculations" The flange loading check essentially involves determining the effective pressure in the flange due to operating pressure and external moment and force loads, and comparing it with the allowable pressure in the Table 2 of the ANSI B16.5 and 16.47. If the effective pressure is greater than the allowable pressure, then the flange is operating beyond its rated capacity. When the effective pressure is greater than the allowable pressure, the program will automatically increase the pressure rating to the next highest and perform the flange loading check again. This procedure is repeated until either the effective pressure is less than the allowable pressure, or the highest pressure rating is reached. B. "ASME Section VIII, Rigidity Criterion" Flanges that have been designed on allowable stress limits alone may not be sufficiently rigid to control leakage. 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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