Abstract
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.
Original language | English |
---|---|
Title of host publication | Conference proceeding |
Subtitle of host publication | 20th AER Symposium on VVER Reactor Physics and Reactor Safety |
Publisher | Atomic Energy Research AER |
Pages | 569-582 |
Volume | 1 |
ISBN (Print) | 978-963-372-643-3, 978-963-372-644-0 |
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 Sept 2010 → 24 Sept 2010 |
Conference
Conference | 20th AER Symposium on VVER Reactor Physics and Reactor Safety |
---|---|
Country/Territory | Finland |
City | Espoo |
Period | 20/09/10 → 24/09/10 |