Abstract
| Original language | English |
|---|---|
| Title of host publication | Conference proceeding |
| Subtitle of host publication | 20th AER Symposium on VVER Reactor Physics and Reactor Safety |
| Pages | 569-582 |
| Volume | 1 |
| Publication status | Published - 2010 |
| MoE publication type | A4 Article in a conference publication |
| Event | 20th AER Symposium on VVER Reactor Physics and Reactor Safety - Espoo, Finland Duration: 20 Sep 2010 → 24 Sep 2010 |
Conference
| Conference | 20th AER Symposium on VVER Reactor Physics and Reactor Safety |
|---|---|
| Country | Finland |
| City | Espoo |
| Period | 20/09/10 → 24/09/10 |
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Validation of new 3-D neutronics model in APROS for hexagonal geometry. / Rintala, Jukka.
Conference proceeding: 20th AER Symposium on VVER Reactor Physics and Reactor Safety. Vol. 1 2010. p. 569-582.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - Validation of new 3-D neutronics model in APROS for hexagonal geometry
AU - Rintala, Jukka
PY - 2010
Y1 - 2010
N2 - APROS - Advanced PROcess Simulation environment - is a widely used simulation tool for nuclear power plant modelling. Earlier the three-dimensional neutronics calculation has been based on model using the difference method. The original three-dimensional core model is mainly used in power plant simulator applications, where it fits well because of its speed. For safety analysis purposes, however, a new model was considered to be an important improvement to meet the accuracy requirements. A sophisticated nodal model used already in HEXTRAN and TRAB-3D was decided to be implemented into APROS. The hexagonal part of the model has now been implemented and tested. For practical reasons, the model was programmed from scratch into APROS and also some small improvements were added and thus, an extensive validation program was necessary to prove the correct behaviour of the model. In this paper, the most important results from AER kinetic benchmarks 2 & 3 calculations are shown as well as the calculation results against data achieved LR-0 test reactor space-time kinetic experiments. Since the model is similar to the one in HEXTRAN, the results in benchmarks are compared to the results by it. In LR-0 calculations, results by both, original and new model are presented and compared to the measurements. The results shows that the implementation of the model has been successful and the new model improves the accuracy of three-dimensional neutronics calculation in APROS into the level required in safety analyses.
AB - APROS - Advanced PROcess Simulation environment - is a widely used simulation tool for nuclear power plant modelling. Earlier the three-dimensional neutronics calculation has been based on model using the difference method. The original three-dimensional core model is mainly used in power plant simulator applications, where it fits well because of its speed. For safety analysis purposes, however, a new model was considered to be an important improvement to meet the accuracy requirements. A sophisticated nodal model used already in HEXTRAN and TRAB-3D was decided to be implemented into APROS. The hexagonal part of the model has now been implemented and tested. For practical reasons, the model was programmed from scratch into APROS and also some small improvements were added and thus, an extensive validation program was necessary to prove the correct behaviour of the model. In this paper, the most important results from AER kinetic benchmarks 2 & 3 calculations are shown as well as the calculation results against data achieved LR-0 test reactor space-time kinetic experiments. Since the model is similar to the one in HEXTRAN, the results in benchmarks are compared to the results by it. In LR-0 calculations, results by both, original and new model are presented and compared to the measurements. The results shows that the implementation of the model has been successful and the new model improves the accuracy of three-dimensional neutronics calculation in APROS into the level required in safety analyses.
M3 - Conference article in proceedings
SN - 978-963-372-643-3
SN - 978-963-372-644-0
VL - 1
SP - 569
EP - 582
BT - Conference proceeding
ER -