ILT20 – an Upgraded Computer Program for Evaluation of Accelerated Leach Test Data of LLW in the Hungarian NPP Paks
| Autor: | József Dobor, Ottó Zsille, Lajos Kátai Urbán, Ferenc Feil, Gyula Vass, Jozsef Csurgai, György Pátzay, János Nyőgér |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Periodica Polytechnica Chemical Engineering. 65:550-558 |
| ISSN: | 1587-3765 0324-5853 |
| DOI: | 10.3311/ppch.18137 |
| Popis: | Computer Program ILT15 was earlier developed to accompany a new leach test for solidified radioactive waste forms in the Hungarian NPP Paks. The program was designed to be used as a tool for performing the calculations necessary to analyze leach test data, a modelling program to determine if diffusion is the operating leaching mechanism (and, if not, to indicate other possible mechanisms), and a means to make extrapolations using the diffusion models. The program uses computational algorithm of ASTM C1308 standard. Now we have developed another computational algorithm based on a Partial Differential Equation (PDE) of a cylindrical specimen, solved the PDE by a Crank-Nicolson Finite Difference Method (FDM) and calculated by integration the eluted amount of a given component in time. The new solution more accurate method was integrated into the existing ILT15 computer program and the resulting new ILT20 program is able to calculate the Incremental/Cumulative Fraction Leached IFL/CFL) either by ASTM or PDE numerical solution methods.ILT20 program is written in C++ in the Borland C++ Builder programming environment. A detailed description of application of this upgraded modelling computer program is given. |
| Databáze: | OpenAIRE |
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