Sample project of using HERACLES-TDB in GEMS

Enter the composition of the system defining the Quantity of each component and the Units
Enter the composition of the system defining the Quantity of each component and the Units
Certainly the composition of the system depends on the fuel burnup: one can found the other examples of FP inventories in irradiated UO2 fuel of different burnup here.
Component speciation is calculated under normal conditions, i.e. at reference pressure Pr = 1013 mbar and temperature Tr = 298K
System inventory calculated under normal conditions, i.e. at reference pressure Pr = 1013 mbar and temperature Tr = 298K


Final results will be given in the Table as a mole fracltion x (for condenced phases) or partial preassure lga (for gases).
After you finished calculation of speciation under normal conditions and for calculations under elevated temperature go to Process Simulation in GEMS Menu.
Start the New Process Simulation, give the Process Record Key. Define the script to be used for calculation: pick the species of interest.
Start the New Process Simulation, give the Process Record Key.
Define the script to be used for calculation: pick the species of interest.


Basically one can look for all the species available in the database. However, when the system is too complex its better to define the limited nimber of species to be traced.
Step 1. Set up the process conditions: define the temperature and pressure interval. The steps within the temperature range
Step 2. Define the pressure and temperature intervals
Step 3. Select the spicies of interest
Step 4. Allocate the optional data vector
On Step 5 chose option to "Safe the generated SysEq records" in order to have SysEq files for each temperature step. Finish Process setup.

Step 6
Step 6


When Process setup is completed, the record pages look like this:
Script identification, Page 1
Script identification, Page 2.


Safe the process record and start calculation.
GEMS has an option to show calculated graph in a real time.
It's also possible to make a fragmentation of the graph by rescaling the diagramm in Customize option
Real time results evaluation
Graphics rescaled


After calculation is completed, the data can be exported in the Excel, Origin, etc. for further data manipulations.
Simply mark the data in the table and copy them into the other file.

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