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Problem Statement: When I open Datasheet Definer from start menu (Aspen Basic Engineering > Datasheet Definer - ABE Vxx, where Vxx is the version number), Excel opens without the 'Aspen Datasheet Definer' ribbon available at the top.
Note: This knowledge base (KB) article assumes that Datasheet Definer Add-in is not ... | Solution: If you are not able to display the Datasheet Definer tab, there could be two possible reasons:
A. Datasheet Definer Add-in Unloaded: It will display a load behavior as seen below:
To display the load behavior of the image above, follow these steps:
i) Start Microsoft Excel
ii) Go to File > Options > Add-i... |
Problem Statement: I created a spreadsheet and added aqueous and liquid phase liquid volume flows at standard conditions from a stream. However, I noticed the values for the phases are reversed on the spreadsheet. Why is this happening? | Solution: This is a known issue which occurs when the variable Phase - Liq Vol Flow @Std Cond is selected for the spreadsheet. Instead, please use Phase Liq Vol Flow @Std Cond (no dash) as a workaround.
Keywords: Liquid, volume, flow, standard, conditions, aqueous, reversed, switched
References: None |
Problem Statement: How to resolve the error, The specified project location does not exist or is invalid? | Solution: This error may occur if the file for logo.bmp is missing from C:\Users\Public\Documents\AspenTech\Shared Economic Evaluation V10.0\Reporter\Database. If logo.bmp is missing from this directory, then it will cause an error when generating the report.
TheSolution is to create a new logo.bmp file at the locati... |
Problem Statement: What is counter ion and how to apply it to modeling? | Solution: The purpose of counterion is to ensure charge balance of overall exchange process is kept. Take water softening process as an example: (Ca+2) + 2 (Cl-) + 2 (Na+R-) = 2 (Na+) + 2 (Cl-) + (Ca+2)•(R-)2 where (R-) is a cationic exchange resin. In this case, (Na+) is the counterion which is adsorbed in the “clean”... |
Problem Statement: Aspen Basic Engineering (ABE) Explorer says I cannot delete a bridge as it is locked by a user even though I am the only user on that workspace. How do I force it to unlock the bridge so I can delete it? | Solution: Create a new folder on the Explorer and place the Bridge on the new folder. Once bridge is added to the folder you can right click on the bridge and delete it.
Keywords: Bridge, Explorer
References: None |
Problem Statement: Are results in Hydrate Formation based on hydrate formation curve or hydrate dissociation curve? How accurate is the hydrate formation prediction? | Solution: The results in Hydrate Formation are based on hydrate formation curve. On a P-T plot, Hydrate Formation curve sits on the left side closer to the origin where temperature is lower. Hydrate Dissociation curve is to the right of the P-T plot.
To the left of Hydrate Formation curve is the Hydrate Zone (also call... |
Problem Statement: What is the reference of higher and lower heating value calculations? | Solution: Gas calorific value (higher heating value and lower heating value) calculations are based on ISO 6976: 1995.Solution document 98758 contains the equations involved in calorific value calculations.
Keywords:
References: , calorific value, higher heating value, lower heating value, HHV, LHV |
Problem Statement: How does HYSYS calculates Lower and Higher Heating Values of a stream? | Solution: HYSYS calculates the lower heating value as the sum of the heat of combustion times the mole fraction for each component in the stream.
LHV = sum(x[i] * Hcomb([i])
The higher heating value is calculated as the lower heating adjusted by the heat of vaporization of water under standard conditions multiplied b... |
Problem Statement: Aspen Properties Database Manager middle pane is coming up blank. See below: | Solution: The missing pane can be resolved by copying the file mmc.exe.config from C:\ProgramData\AspenTech\APED V12.0 (modify the path to match the version you are using) to C:\Windows\SysWow64.
Alternatively, you can add the following lines from the mmc.exe.config file (located under APED folder) into the existing f... |
Problem Statement: When a RadFrac column model includes specifications on vaporization stage efficiencies, the liquid composition leaving the tray is not an equilibrium composition. In other words, if the liquid flow from such a stage is flashed at the conditions of that stage, the bubble point temperature is generally... | Solution: The issue with efficiencies is that one composition (liquid or vapor) must be obtained from a flash calculation, in order for the other one to be calculated from the equation which defines the efficiency.
Vaporization efficiency is defined as the ratio of the actual vapor composition of a given component over... |
Problem Statement: HEATX block is not letting me turn off the henry component for Peng Robinson and shows input incomplete. | Solution: There are two different Right Mouse Button (RMB) clicks for the field for Henry Components. If mouse is hovered over the field and then click right mouse button, it will bring up the below menu items.
If you select the field first then clicking right mouse button, it will bring up another menu items with Cle... |
Problem Statement: How to solve “WARNING: Field name is not liked to a cell/range in the document.”? | Solution: The Field Name exists in Name Manager but it has no reference to a cell/range in the datasheet.
How to fix:
If the Field Name is not associated to an ABE field, then the Field Name can be linked to an empty cell and then deleted using the ABE’s Delete button.
1. Go to Formulas menu > Name Manager b... |
Problem Statement: Is the Twu alpha function built in with the Peng-Robinson (PENG-ROB) and/or PR-BM (Boston Mathias) Equation of State (EOS) models? What are the option codes associated with each of these property methods (also called options sets)? | Solution: The Peng-Robinson equation of state is the basis for the PENG-ROB and PR-BM property methods in Aspen Plus and Aspen Properties. The model has been improved with the ability to select different alpha functions and has been extended to include advanced asymmetric mixing rules.
By default, the PENG-ROB property... |
Problem Statement: When making calculations near critical conditions, flash calculations may generate error messages. These messages may be generated not only from a flash block (Flash2 or Flash3), but may happen for any block when a flash is done to set stream conditions, to calculate a prop-set, or during generation ... | Solution: ; RESULTS ARE UNRELIABLE. SPECIFIED TEMP OR PRES MAY BE ABOVE THE MIXTURE CRITICAL POINT. GIVE TEMP AND PRES SPEC AS A WORKAROUND.
ERROR IN PHYSICAL PROPERTY SYSTEM WHILE GENERATING PROP-TABLE: PT1 (LQROOT.1) LIQUID ROOT NOT CONVERGED IN EOS MODEL...
Solution
Often when these messages are generated, the resu... |
Problem Statement: Is it possible to have different offsets in APS and MBO? For example in APS, if the user wants as 7 hours offset and MBO they want 0 hours offset. | Solution: For an APS/MBO shared database, having different offset hours will cause logic confusion for the tank baseline since APS and MBO share the same baseline for the tanks. Other than that, the simulation results/trend for the same tank in APS and MBO will be inconsistent, for importing APS Run Downs to MBO, it wi... |
Problem Statement: The Keep Only Unique Cases stored procedure doesn't seem to work when transitioning from Access db to SQL | Solution: The “keep unique” stored procedure makes the assumption that the maximumSolution id is the latest execution. This “maxSolution id” is a standard assumption used in other areas of code/logic in PIMS. But because theSolution ids are mixed (using both sql server generated ids and also the original datetime gen... |
Problem Statement: Which values in the BCI spreadsheet are multiplied by the scale factor set for a property? | Solution: In the BCI setup, user will put in the min and max constraints in MBO. BCI will process the property from MBO results tables - Specs, GlobalSpecs, etc. When user submits the recipe to generate BCI results, it multiplies BlendValue (blend composition property), PropertySpec (property specification), PropertyLo... |
Problem Statement: Is it possible to create a Non-linear equation using a case in PIMS? | Solution: Currently there's no way to create or modify a NLE in the CASE table. All NLEs attached to the model tree are used in all cases.
One possible workaround could be to divide the cases into 2 spreadsheets - When running the cases with NLEs, enable the spreadsheet with the appropriate cases. When running the cas... |
Problem Statement: Is there a way to change the decimalization of the blend recipe in MBO? | Solution: The number of decimal places of composition percentages on a blending event dialog box is hard coded to 3. At present, it is not possible for users to change it in the model settings.
Keywords: None
References: None |
Problem Statement: What could cause the Failed to update the data table: ORION_MGR_ASSAY_IMP_MASTER error message when importing assay data through EIU? | Solution: When importing assay data through EIU, you may get the following error message:
Failed to update the data table: ORION_MGR_ASSAY_IMP_MASTER. Violation of PRIMARY KEY constraint 'PKORION_MGR_ASSAY_IMP_MASTER'. Cannot insert duplicate key in object 'dbo.ORION_MGR_ASSAY_IMP_MASTER'. The duplicate key value is (... |
Problem Statement: What is the maximum amount of Properties that we can enter for a Product Receipt in APS? | Solution: There’s no limit as to how many properties you can add in the event. You can select as many defined properties in the dialog box:
Keywords: None
References: None |
Problem Statement: Does MBO support adding Product Purchase price through EIU? If not, what prices does it use for the product receipt? | Solution: MBO supports purchase price only for components and not for products. MBO internally will use the Product purchase price from Product definition dialog.
Keywords: None
References: None |
Problem Statement: What is the impact of the Relax Quality bound setting on the Optimum | Solution: ?
Solution
The Relax Quality Bounds setting allow the bounds on quality variables (except SPG) to be relaxed from their upper and lower bounds during optimization. The user must be careful when turning this setting On for the model, and must check that there's no severe quality bound violations before turnin... |
Problem Statement: When the properties are added to the Assay Manager Property library, why aren't they automatically included in the Property Map section? | Solution: When user adds Properties to the Assay Manager Property library, the Property Map should allow the user to select a custom defined property if they select the 'User Defined' Group. As of now, addition to the Property Map table isn't automatic.
Keywords: None
References: None |
Problem Statement: Why does the Publish-> Export Blends option not publish Blend Rundown events in APS? | Solution: When you use the APS Simulator | Publish --> Export Blends option in APS, it only exports Blend events (type 17) in the model. In MBO, the Events | Publish --> Export Blends will publish both Blend and Blend Rundown events for the current event screen. In APS, user can export individual Blend Rundown events f... |
Problem Statement: How to use the DeltaMinSpec and DeltaMaxSpec columns in the BpcSpecs table in BCI? | Solution: Let's take the example of a blend that has a min and max on a property. We only need the blend to meet the minimum requirement but for the purpose of optimization, we've added a max spec as well in MBO.
In the blend that is exported to BCI, if the property is off-spec, for example above the max, it doesn't ma... |
Problem Statement: What can cause duplicate entries in the PrPurchase table in PIMS? | Solution: In a Global PIMS model, when you run a case, there might be instances where you see multiple entries for the sameSolutionID, CaseID, PeriodID, NodeID, and StreamID, with different descriptions, activity, etc.
These entries are caused by the use of LOCTAGS. In the local model, there are two purchases in BUY:... |
Problem Statement: What would happen if the license server is restarted when users still have PIMS-AO open? | Solution: When users are working on PIMS and the license server is restarted, if the PIMS AO license becomes unavailable, PIMS will automatically revert to running with DR. This is by design. If the license becomes available again later, the user will need to switch the model back to AO.
Keywords: None
References: No... |
Problem Statement: Can the Sub-model calculator files include Non-linear Equations setup in AO? With PIMS-AO, users are able to incorporate non-linear equations to blend qualities, is it possible to create a submodel calculator (SMC) to export those submodels to APS? | Solution: The SMC files that include the non-linear equations cannot be created in this scenario, as the SMCs are strictly linear structures and with the current structure, there is no way to include nonlinear equations.
Keywords: None
References: None |
Problem Statement: Can the Automatically Add Infeasible | Solution: Penalties setting in PIMS-AO be used for Bounds?
Solution
The Automatically Add InfeasibleSolution Penalties setting is used to automatically add infeasibility breakers using built-in penalty structures to solve infeasibility problems.
This setting applies penalties to Capacities, Proclims, Purchases, Sales,... |
Problem Statement: Is it possible to consolidate APS/MBO databases into one location, when different sites would be on different application versions? | Solution: It is possible to have all your databases in one central database server. For the steps involved, you would have to backup the current database and then restore it in the new server location- you'll need to have Admin access to the server for this step. You can have multiple versions on the server as well, si... |
Problem Statement: How are property calculations handled when tank inventory becomes negative in APS? | Solution: When the tank inventory becomes negative, the simulator will not be updating the property values for those tanks. As such, the property values may not be accurate, as this doesn't reflect the real scenario. When the inventory becomes positive, then the simulator takes up the calculation for the properties aga... |
Problem Statement: What are the different ways in which PIMS-AO applies the penalties when using the Automatically add Infeasible | Solution: Penalties setting?
Solution
There are two options for selecting how PIMS applies the infeasibleSolution penalties:
1. Apply Penalties to Case Changes Only: Select this option to only apply penalties to all the relevant structures (e.g., limits, blend specs, purchases and sales), that are modified in the curr... |
Problem Statement: MBO adds additional trend limit with zeroes for Material Pool Trends. The user has a Material Pool trend added to one of the screens, and the Calculate trend limits option is checked.
Now the user navigates to another screen and opens up an Event dialog box, saves and closes the model, and then re-o... | Solution: This is a known issue and will be fixed in upcoming patches. The current workaround is to remove trend limits c by deleting it from the TREND_LIMITS table in the db.
Keywords: None
References: None |
Problem Statement: What are some guidelines on Improving model performance in APS & MBO? | Solution: The attached document covers model performance issues, and the settings, keywords, and maintenance tips for improving the model performance.
Keywords: None
References: None |
Problem Statement: What are the model structures to which the Infeasibility breakers are applied using the Automatic Infeasibility breakers setting? | Solution: Using Automatic Infeasibility breakers setting, PIMS-AO automatically adds infeasibility breakers using built-in penalty structures to solve infeasibility problems. It's applied to the following structures:
1. Limits : Applies the indicated factor to capacities and process limits. Specifies the cost of 'buyi... |
Problem Statement: How can I import crude assay with crude description using EIU? | Solution: The APS_DESC column in the PIMS_Crude_XREF sheet can be used for importing the crude description using EIU. Once you click Audit Data, make sure you select Yes on “Do you want to load mapping data into database?” message box.After reopening the APS model, we can see the new description on the select crude dia... |
Problem Statement: What are the different possible values for the DBGINFOLEVEL field in the CONFIG table? | Solution: Below are the different values the DBGINFOLEVEL field can have, and the resulting data that is written to the OrionDbg.txt file:
DBGINFOLEVEL
value Debug Information Comments
0 No information is provided If TIMR is set to Y, performance profiling for units will be generated and saved to (WorkingFolder)\(Mo... |
Problem Statement: Is there a way to read events from an inactive case while the current case is not where the event is defined? | Solution: APS only loads the current case data for the given horizon in the memory. Users cannot directly get case data from another case from automation. The only way would be to publish the event data from the other case so that it's loaded in database tables and query the results directly.
Keywords: None
References:... |
Problem Statement: On the aspenONE Process Explorer, how to display the tag sparkline on the timeline bar? | Solution: Here is the procedure:
1. On a basic trend plot, click the Chart Setting on the top right corner.
2. Uncheck the Optimize Performance, and click OK.
3. The tag sparkline will be displayed on the timeline bar.
Keywords: sparkline
timeline bar
A1PE
References: None |
Problem Statement: How to display the symbol preview on the Aspen Graphic Studio? | Solution: Here is the procedure:
1. Open an existing project.
2. Right-click the symbol library on the and then click Open Palette
3. You will be able to see the preview of all symbols under that symbol library.
Keywords: Graphic Studio
Symbol Preview
References: None |
Problem Statement: When opening the scheduling table, an error message “B21BSC-50002: Relational Database Error -2147217900” appeared. How to troubleshoot? | Solution: The issue is caused by the transaction log for database full, we can free up the log space by shrinking the database log.
Here are the steps:
Launch the SQL server management studio
Right-click the database, select Tasks, select Shrink, select Files.
Select the log you want to shrink, click “OK”.
The transac... |
Problem Statement: How do I calculate the dew point at different pressures? | Solution: You can use the property Table to calculate the dew point at multiple pressure points. This can be implemented using the Property Table available under Steam Analysis. You can add the Properties Table directly in the stream or via the Navigation Panel. Follow the steps given below:
1. Open the stream where y... |
Problem Statement: Why does the warning “A temperature in stream X is not found at the requested conditions” appear? | Solution: When specifying a stream on Aspen HYSYS using Flow (with its corresponding composition), Vapor Fraction and Pressure, the Warning “A temperature in stream X is not found at the requested conditions” can show up.
When a Vapor Fraction (VF) and the Pressure (P) have been specified, HYSYS will attempt to solve ... |
Problem Statement: Why do I have an effect on the sulphur content in distillates when adjusting the overall HDN activity? | Solution: The HDN reaction in the hydrocracker model is exothermic. The reactions will release more heat if you make the overall HDN activity more active. This will raise the temperature in the reactor bed and make HDS reactions also go faster.
Keywords: Hydrocracker, HDN Reaction, HDS Reaction
References: None |
Problem Statement: Aspen Safety Analysis Tool - The Orifice Area on the summary sheet “Calculated Orifice” & the Edit flash table does not match. For example the summary shows value: 4.392 & in flash table its 4.348. | Solution: 1. There is a slight difference in the area calculated in the flash table and the area calculated as the required area in the scenario, because different equations are applied. In both cases, calculated area by calculating the mass flux through the relief valve, then calculating the area required to pass the... |
Problem Statement: How to solve “WARNING: Metadata discrepancy: Field names defined but not as Excel range names.”? | Solution: Cause: This issue occurs if a field name presenting the issue described in WARNING: Field name is not liked to a cell/range in the document. article is deleted from the Name Manager directly, without fixing the link to a cell and then deleting it.
Description: The Field Name does not exist in Name Manager bu... |
Problem Statement: How Live Link and Datasheets buttons work in Safety Analysis V12? | Solution: In V12, the ribbon Safety Datasheets was introduced to contain all the commands for the generation of the PSV Datasheets where Live link and Datasheets are two new capabilities in V12.
The Live Link option is a new feature since V12. When activated, the data will be transferred automatically for the mapped ... |
Problem Statement: In the error.log file for a history repository, getting the error:
Save_cache() write data failure 28
What does it mean? | Solution: The above error message means that there is no space left on the hard drive containing archive filesets. The hard drive has filled up to a point where no significant amount of data could be written to the current archive fileset.
First thing to do is to free up some disk space. However, after space on the arc... |
Problem Statement: How to add private timelines to trend plots within Aspen Process Explorer. | Solution: When using Aspen Process Explorer to review multiple trend plots it can be very helpful to give each trend plot a private timeline so that you may review the data within these plots at different time periods for comparative analysis. The example in this knowledge base article will show two trend plots open wi... |
Problem Statement: When using the Test API utility, GET successful is returned without any data:
Please select device data type for tag 'tagname'
Press RETURN for default:
GET successful
Please press RETURN to continue... | Solution: Perform the cimio_t_api test using Access type Synchronous (1) and list id of -1
Keywords: Test API
CIMIO
Get
Successful
References: None |
Problem Statement: Some sites choose to install the Aspen Cim-IO for OPC interface (acting as an OPC client) on a machine remote from the OPC Server. When using this setup, there are considerations for the DCOM configuration used. | Solution: To get an OPC client talking to an OPC server clients must be able to 'look up' an OPC server:
1. Each OPC server is identified by a GUID - a large hex string stored in the registry.
2. Some OPC clients just scan the local registry and assume that all computers have the same OPC servers installed on t... |
Problem Statement: How do I load a Recload file (.RLD) into an Aspen InfoPlus.21 database? | Solution: A Recload (.RLD) file is a file of records that is loaded into the database. RLD files are loaded into the database to populate the database with records.
The following steps detail how to load a .RLD file into an Aspen infoPlus.21database.
1. Open the Aspen InfoPlus.21 Administrator .
2. Expand the I... |
Problem Statement: Why does my file use a RefSYS license when there is no petroleum refining feature used? | Solution: First, confirm that the file is not using any Petroleum refining features (Petroleum Assays, RefSYS unit ops, etc.). Once this is confirmed, then clear all property slates for petroleum assays. This can be done by pressing Ctrl+M. The window below will pop up:
Select the PV Balance tab, highlight Petroleum A... |
Problem Statement: Which unit operations use the REFSYS license? | Solution: The REFSYS license is used when HYSYS Petroleum Refining unit operations are present in the simulation environment. Below is a list of these unit operations.
Assay Manipulator
Catalytic Reformer
FCC Reactor
Hydrocracker
Petroleum Distillation Column
Petroleum Feeder
Petroleum Shift Reactor
Isomerization
Hydr... |
Problem Statement: How are the various volume flow properties in Aspen HYSYS calculated? | Solution: Density and volumetric flow calculations can be classified in the following three ways: (1) Actual - at flowing conditions - rigorous calculation reflecting non-ideal mixing effects, (2) Standard - at standard reference conditions - rigorous calculation reflecting non-ideal mixing effects, and (3) Ideal - at ... |
Problem Statement: What is the phase of a supercritical mixture? Sometimes the phase is listed as Vapor and sometimes the phase is listed as Liquid.
Are liquid density, liquid enthalpy, and liquid heat capacity routes being used to calculate these properties instead of the vapor routes? | Solution: The phase is of a supercritical mixture is not vapor or liquid, it is supercritical. Aspen Plus does not have a designation of supercritical; therefore, the phase can be assigned as either liquid or vapor.
The rough convention for phase designation is:
If the Temperature is greater than the critical temperatu... |
Problem Statement: You may have instances where the Aspen Cim-IO server (and OPC for that matter) are located at remote sites with no accessible connection to the corporate network, hence no access to the license server. Will CIMIO server still work after upgrading to the V8 release? | Solution: Cim-IO server does not require a license beginning V11. Prior to that, you may install CIMIO server without a license, but then it will produce the following errors on first attempt to start Cimio Manager service:
Further inspection in Event Viewer will show this:
A new license enforcement scheme was intr... |
Problem Statement: Example: Carbon Emissions Modeling for Refinery Planning Using Aspen PIMS | Solution: This Aspen PIMS example model captures the carbon emitted in a refinery plantwide optimization model. It covers two main sources of CO2, mainly the Fluidized Catalytic Cracker (FCC) plant and the Fuel Gas system. With ongoing focus of refiners to include sustainability aspects into their planning and scheduli... |
Problem Statement: Carbon Emissions Modeling for Olefins Planning Using Aspen PIMS | Solution: The Chemical and Petrochemical sector is one of the largest greenhouse gas (GHG) emitting industrial sector among stationary sources such as Power Plants, Petroleum and Natural Gas Systems. The chemical and petrochemical industry accounts for 30% of global industrial energy use and 16% of direct CO2 emissions... |
Problem Statement: Carbon Emissions Modeling for Refinery Planning Using Aspen Unified PIMS | Solution: This Aspen Unified PIMS Planning example model captures the carbon emitted in a refinery plantwide optimization model. It covers two main sources of CO2, mainly the Fluidized Catalytic Cracker (FCC) plant and the Fuel Gas system. With ongoing focus of refiners to include sustainability aspects into their plan... |
Problem Statement: Can HYSYS envelope analysis plot the hydrate dissociation curve? | Solution: The HYSYS envelope analysis for hydrates will only plot the hydrate formation curve. It will not plot the hydrate dissociation curve. HYSYS hydrate formation analysis utility only calculates hydrate formation, not hydrate dissociation.
Keywords: Hydrate formation, hydrate dissociation, envelope analysis
Refer... |
Problem Statement: How to export a list of OPC UA Browse paths or node id’s that can be imported into an OPC UA client application using the Aspen OPC UA Explorer? | Solution: Open the Aspen OPC UA Explorer.
Connect to the OPC UA server.
Select the desired tags so the details are displayed on the “Variable Details” tab.
Select all the lines containing the tags.
R-Click and Copy
Paste to a notepad and save as a *.CSV file. the file will contain all the variable details.
If needed t... |
Problem Statement: Do we have any typical mechanical arrangement for deresonating baffles!! | Solution: Application of Deresonating Baffles
An acoustic type of vibrations may observed in the heat exchangers. In such cases to avoid acoustic resonance issues, deresonating/ detuning baffle could be the best choice.
There are several means available to correct resonating vibration issues. The other modifications m... |
Problem Statement: How to create a new Project in OptiPlant? | Solution: Procedure to create a new OptiPlant project.
Select a location in the folders and create one with the name of the project.
In OptiPlant go to File | Open.
In the File Name field, enter the file name.
Important Note: The folder and file names must not contain spaces and should not have any special characters l... |
Problem Statement: Why is there no heat transfer calculated in the Convective/Economizer zones of a Fired Heater? | Solution: Fired Heaters give the user the option for specifying stream connections in three different heat transfer zones: Radiant, Convective and Economizer. On the Design/Connections page, multiple inlet and outlet streams can be defined and it is possible to assign a zone of the exchanger to each of the streams. It ... |
Problem Statement: Using Aspen Hydraulics and dynamic simulation to study pigging operation in a pipeline | Solution: Pig can be used to clean and inspect the pipeline. A pig is launched from a certain location along the pipeline and is pushed down the pipe until it reaches the receiving trap. Pigging operation can help to achieve environmental benefit by avoiding the use of cleaning agent, solvent, or water to clean the pip... |
Problem Statement: What year DIPPR databooks were used to build Aspen Plus databanks? | Solution: The PURExx databanks are based on the public version of the DIPPR database.
The PURE39 databank in Aspen Plus V12.1 is from 2019
The PURE38 databank in Aspen Plus V12.0 is from 2019
The PURE37 databank in Aspen Plus V11.0 is from 2018
The PURE36 databank in Aspen Plus V10.0 is from 2016
The PURE35 databank ... |
Problem Statement: Why am I unable to estimate properties for a certain component? I get the following warning:
* WARNING IN PHYSICAL PROPERTY SYSTEM
FUNCTIONAL GROUP GENERATION FOR THE XXX METHOD CANNOT BE COMPLETED
FOR COMPONENT XXX. THE FOLLOWING ATOMS WERE NOT MATCHED:
SI 2 SI 4 | Solution: The Aspen Physical Property System uses the molecular structure information to build the required functional groups for all estimation methods used in the run. Not every group is available for every method. If the component contains atoms or groups that are not available in a method, it is not possible to use... |
Problem Statement: The bubble point calculated using PT-Envelope in Analysis is completely different from that estimated using a bubble point property calculation (Tbub) using Generic Analysis. The overall valid phases has been set to use Vapor-Liquid-Liquid (VLL); however, the PT-Envelope only ever shows one liquid ph... | Solution: PT-Envelope Analysis was originally only designed to work with vapor-liquid systems and was not designed to detect two liquid phases. Starting in V11, a new method, the density marching method (Venkatarathnam, 2014) is available for use in computing P-T Envelope analysis. The new method also supports vapor-li... |
Problem Statement: The 64-bit compilation of zetoolkit.dll provided with Aspen Plus/Properties V11 works fine in VBA macros with 64-bit Excel; however, there can be problems with 32-bit Excel. Is it possible to get the inclusion 32-bit version of zetoolkit (e.g. zetoolkit32.dll)? | Solution: Zetoolkit.dll is the summary file toolkit dynamic-link library. This file is stored in the Engine\xeq subfolder of the APrSystem installation, typically C:\Program Files\APrSystem <version>\Engine\xeq\zetoolkit.dll
It is used as a standalone tool and has no dependency on other Aspen Plus dlls; therefore the ... |
Problem Statement: I am using an oil assay library and components are listed as PC66F etc. How can I interpret these PC components and relate it with carbon hydrocarbon (CxHx) components. | Solution: ATOMNO and NOATOM, which combine to form the chemical formula, are estimated from the molecular weight and carbon-to-hydrogen (C/H) ratio. The C/H ratio is estimated using the procedure in Technical Data Book - Petroleum Refining, vol. 2, fig. 2B6.1, American Petroleum Institute, 1983. These components are as... |
Problem Statement: How should the retention vector (RETN and IRETN) be defined in a call the physical property flash in a user model? | Solution: The retention vector can be used to initialize the flash. RETN is the Real retention vector and IRETN is the Integer retention vector. The retention vector needs to be set properly and be large enough or other variables in memory can be overwritten in an unpredictable manner. This is true even if it is not us... |
Problem Statement: How do you find out what streams are tear streams in a flowsheet? | Solution: A tear stream is a stream in a flowsheet with recycle which is torn by the sequential modular convergence routine. The tear removes the recycle by guessing an initial value for this stream where it enters a block, and allows the solver to progress through the flowsheet. Eventually a result is calculated for t... |
Problem Statement: How are Gross and Net Heating value (QVALGRS and QVALNET) prop sets calculated in Aspen Plus? | Solution: Gross and Net Heating value should be accessed using the property sets QVALGRS and QVALNET respectively. The property sets HHVxxx and LHVxxx are from the Aspen HYSYS Refining Correlation Manager.
Net Heating Value (QVALNET) - API Low Heating Value (LHV)
In Aspen Plus the Net Heating value is the property set... |
Problem Statement: You cannot connect to the Rockwell FactoryTalk historian. When testing the connection in the Rockwell FactoryTalk adapter, you may get the following error message:
Connection test failed.
[PI SDK] Unable to open a session on a server. [-10734] PINET: Broken Connection.
If you get the following erro... | Solution: Prior to setting up the historian connection, the following prerequisites must be completed:
PIOLEDB Enterprise and Provider have to be installed
A connection has to be done in the application
After these steps are completed, you must do the following:
1. Log into PI OLEDB MMC Snap-in.
2. Right click on the... |
Problem Statement: When importing date and time data into Aspen Mtell, what formatting should be used? | Solution: Aspen Mtell follows the standard Microsoft date and time formats when importing CSV files
When using Aspen Mtell, the Microsoft formats should correctly represent the date and time data being imported.
Format specifier Description Examples
d The day of the month, from 1 through 31. M/d/yyyy H:m:s
5/2/2020 0:... |
Problem Statement: When trying to train agents, the job in the job queue gets stuck at Loading Data and Creating Exemplars.... | Solution: The indices in certain SQL tables became fragmented, which slowed down the training of agents. The tables affected are
1. RCM.tbl_SensorGroupSensorRoleMappings
2. RCM.tbl_TrainingSetProfileData
3. RCM.tbl_TraningSetProfileTagMappings
Caution! This procedure should be followed by Database Administrator after t... |
Problem Statement: How to assign FMEA codes to Live agents in Aspen Mtell | Solution: FMEA codes can be assigned to Live Deployed agents from Aspen Mtell System Manager. These codes will then also be a part of the Email alert if the template consists of the macro for these codes. Code assignment can be done by the following:
1. Open Aspen Mtell System Manager
2. Click on Equipment [1] tab
3. ... |
Problem Statement: How to change the Aspen Mtell Database Recovery Model to Simple mode to manage Log files growth rate | Solution: Changing the Aspen Mtell Database Recovery Model to Simple mode is recommended if you don't want your logs to grow as fast as they currently are. Risks of doing so should be weighed by the Database administrator based on how often Database backups are conducted.
In order to shrink logs, open SQL Server Manag... |
Problem Statement: How to train a Machine Learning Agent on CSV Historian Data and deploy it live on another Historian? | Solution: When the Aspen Mtell user has imported their historian data using CSV files and their historian does not contain much history data, they can train the agent on the CSV data and then switch the historian to connect to the live historian.
1. Setup CSV Historian on Aspen Mtell System Manager
To setup CSV ... |
Problem Statement: How do I create high frequency agents using Aspen Mtell System Manager?
High frequency agents are a subset of rule agents that are processed by agent services on a smaller time interval to get a higher frequency of results | Solution: 1. Open Aspen Mtell System Manager
2. Select the Equipment [1] tab
3. Navigate the Asset Hierarchy [2] to find the asset of interest
4. In the health monitoring sub section, select the Agents[3] option
5. Select the Add agent [4] option from the ribbon and choose rule agent in the drop-down menu.
6. Refer to... |
Problem Statement: How to create a trend that updates dynamically with new tag data using the MES Excel Addins. | Solution: A dynamically updating trend can be created using the MES Excel Addins. To complete this process you will first want to go to the Aspen Process Data tab within MS Excel and then select the 'Historical Values' function. Next you will need to enter the Tag name and Map record for the tag/s that you are desiring... |
Problem Statement: Is it possible to find the source of pure component parameters? | Solution: You can often see the references in the Aspen Properties Enterprise Database (APED) Manager. Many parameters have citations available in the NIST-TRC and in PURE38 and higher.
After opening the Aspen Properties Database Manager, add the desired component.
The citation will show in the bottom pane when you c... |
Problem Statement: There is a difference between Move Suppression parameter in GDOT compared with APC. | Solution: The ‘Use Move Suppression’ option in console is limited to Infeasible problems. This option tells the optimizer to use Move suppressions or not if the problem is Infeasible, there is no such option if the problem is feasible.
If you would like to test the optimizer without move suppressions you would have to... |
Problem Statement: There is a difference between for the Aspen Unified GDOT Builder in the Hydrotreater unit type Standard VS Diesel.
The Standard type shows the Feed Sulfur property but for the diesel hydrotreater, but for the Diesel type it removes that parameter. | Solution: Consider the HDS1 the Hydrotreater unit and the service specified as “Diesel”.
When the hydrotreater type is Diesel, the residual of row HDS1_PROD_SULFUR_BAL depends on HDS1_FEED_VAR1 and not on HDS1_FEED_SULFUR. Since HDS1_FEED_SULFUR does not contribute to any residual, the variable does not exist.
When th... |
Problem Statement: The CCP report is the standard Aspen Capital Cost Estimator evaluation report, but sometimes it can be hard to be read because it is unaligned. | Solution: To make the CCP look aligned, the font needs to be changed to the following:
Font: Courier New
Font Style: Regular
Size: 7
Keywords: ACCE, CCP, reports, unaligned, mess, disorganized
References: None |
Problem Statement: How can I see a list of the Codes of Account (COA) used in the project? | Solution: In order to see all of the COAs that are being used in the project follow the steps below:
1. Evaluate the project
2. Run the Interactive Reports selecting Excel as the report type
3. Select the Combined – Overall report, this can be found in the following path: Full Import > Capital Cost Reports > Direct Co... |
Problem Statement: Creating custom Excel reports in the New Reporter (SQL Server database) for the interactive reporter | Solution: The attached PDF file covers the following topics in the creation and use of custom Excel reports in the New Reporter for the interactive reporter in the Economic Evaluation products:
Define report information in the database
Install Microsoft SQL Server
Connecting to LocalDB
Including report and query inform... |
Problem Statement: Fortran subroutine flash has a parameter called JRES for retention. What does retention mean?
Do I get the same results with JRES at 0, 1 or 2 ?
Does the code execute more efficiently if I set JRES correctly ? | Solution: JRES is the integer restart flag that specified how the retention vector is used.
JRES Simulation restart flag
0=Do not use retention. Initialize with default values
1=Do not use retained values but retain values for subsequent runs
2=Use retained values and retain results for subsequent runs
3=Use guesses fr... |
Problem Statement: Why Aspen Properties and Aspen Simulation Workbook Add-In cannot be added to Microsoft Excel? | Solution: If the user is working with a 32 bit version of Microsoft Excel, this issue could be caused as the Add-Ins were not register properly during the installation; so the user can perform the following steps to manually re-registered the Add-Ins.
For Aspen Properties Excel Add-In:
Open command prompt with Admin Ri... |
Problem Statement: Aspen Plus implements an automation interface, which enables you to create unique | Solution: s to accomplish things that the software is not natively designed to do. To illustrate, a program that prints stream results to Excel 365 is presented. The example utility program runs as a standalone exe file, and does not require installation.
Solution
After three simple steps, the utility program can print... |
Problem Statement: Aspen Plus generates and uses many ASCII file types (*inp, *bkp, *his, *rep, *var...), which means that custom programs can be created to read and edit these types of file. To illustrate, a simple program that can convert Aspen Plus file to function between versions is presented. | Solution: The utility program automates the procedure from the followingSolution article:
How do I open a higher version of an Aspen Plus backup (.bkp) file from a lower version?
Please NOTE the following limitations:
Column Analytics defined V9+ cannot be back converted to earlier versions without error, but offendi... |
Problem Statement: How can I provide limits on values so model end users are only able to enter values within a specified range in Aspen Simulation Workbook? | Solution: Users may use the data validation tool to enforce limits on which values may be entered in ASW tables.
1. Select the appropriate cell and go to Data | Data Validation
2. Select the type of values to allow and enter appropriate limits
3. If the user enters a value outside the limit an error messag... |
Problem Statement: Is it possible to configure bi-directional replication? | Solution: If it is required to send values from the InfoPlus.21 Subscriber Server to the InfoPlus.21 Publisher Server, bi-directional replication is possible but it is required to be careful while configuring it.
Before enabling replication for the desired tags, make sure that on the other InfoPlus.21 Server the tags ... |
Problem Statement: On a Cim-IO connection with Yokogawa, the following error appears on the Get Transfer:
ACG10S Data Could Not Be Converted To Client Datatype | Solution: What this error means is that ACG10S is sending the information in a different format than REAL. Verify that the occurrences associated with this error are set up to Default in IO_DATA_TYPE in the Repeat Area of your Get Transfer.
Also, verify that the Yokogawa DCS is sending values in Real Format.
Keywords:... |
Problem Statement: This Query gets information for each Aspen InfoPlus.21 tag within a Transfer Record such as: Name, Type (if it is Analog, Text, Discrete), Plant Area, Value Format, ENG-Units, Description, Low Limit, High Limit, and the information of its Transfer Record (Get, Put, Unsolicited). | Solution: For this query you inly have to enter 2 values: the name of the output file and the name of the Transfer Record.
This query can set a .CSV file or a .TXT file output in the command line set output 'C:\Temp\infotags.csv'; just change the extension of the file and give the name that you want.
SET Column_Header... |
Problem Statement: This Query gets information for each Aspen InfoPlus.21 tag within a Transfer Record such as: Name, Type (if it is Analog, Text, Discrete), Plant Area, Value Format, ENG-Units, Description, Low Limit, High Limit, and the information of its Transfer Record (Get, Put, Unsolicited). | Solution: For this query you inly have to enter 2 values: the name of the output file and the name of the Transfer Record.
This query can set a .CSV file or a .TXT file output in the command line set output 'C:\Temp\infotags.csv'; just change the extension of the file and give the name that you want.
SET Column_Header... |
Problem Statement: How to get Java Runtime Environment (JRE) 32 & 64 Bit pre-requisite during aspenONE Installation pre-requisite validation? | Solution: During aspenONE installation pre-requisite validation whenever it asks for 32 and 64 bit Java Runtime Environment one of the simplest and easiest way to get this is via directly visiting below links for 32 & 64 bit JRE and downloading it. We just need to visit these sites and load these pre-requisites from be... |
Problem Statement: What is the REFPROP version used in Aspen Plus? | Solution: In Aspen Plus V12.1, the REFPROP is version 10.0.0.02.
In Aspen Plus V12, the REFPROP is version 10.0.0.02.
In Aspen Plus V11, the REFPROP is version 10.0.0.02.
In Aspen Plus V10, the REFPROP is version 9.1102.
In Aspen Plus V9, the REFPROP is version 9.1102.
In Aspen Plus V8.6 and V8.8, the REFPROP is versio... |
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