TY  - GEN
AU  - Orosz, Róbert
AU  - Varju, Tamás
AU  - Aranyosy, Ádám
AU  - V., Holl
AU  - Hajas, Tamás Zoltán
AU  - Aszódi, Attila
TI  - RELAP5, TRACE and APROS Model Benchmark for the IAEA SPE-4 Experiment
PY  - 2022
PG  - 188
UR  - https://m2.mtmt.hu/api/publication/33141001
ID  - 33141001
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Böröczki, Zoltán István
AU  - Aranyosy, Ádám
AU  - Szieberth, Máté
TI  - Comparison of calculation methods for lead cooled fast reactor reactivity effects
JF  - ANNALS OF NUCLEAR ENERGY
J2  - ANN NUCL ENERGY
VL  - 171
PY  - 2022
PG  - 13
SN  - 0306-4549
DO  - 10.1016/j.anucene.2022.109042
UR  - https://m2.mtmt.hu/api/publication/32744876
ID  - 32744876
N1  - Funding Agency and Grant Number: "TKP2020, National Challenges Program"of the National Research Development and Innovation Office [BME NC TKP2020]
            Funding text: The research reported in this paper and carried out at the Budapest University of Technology and Economics was supported by the ``TKP2020, National Challenges Program"of the National Research Development and Innovation Office (BME NC TKP2020).
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Varju, Tamás
AU  - Orosz, Róbert
AU  - Aranyosy, Ádám
AU  - Holl, Viktor
AU  - Hajas, Tamás Zoltán
AU  - Aszódi, Attila
TI  - Sensitivity analysis of the IAEA SPE-2 small-break LOCA experiment with RELAP5, TRACE and APROS system codes
JF  - NUCLEAR ENGINEERING AND DESIGN
J2  - NUCL ENG DES
VL  - 388
PY  - 2022
PG  - 21
SN  - 0029-5493
DO  - 10.1016/j.nucengdes.2021.111630
UR  - https://m2.mtmt.hu/api/publication/32683975
ID  - 32683975
N1  - Funding Agency and Grant Number: Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund; Paks II;  [BME-NVA-02]
            Funding text: The research reported in this paper is part of project no. BME-NVA-02, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. Furthermore, the first part of the previous SPE-4 model development was carried out in the framework of a research project supported by Paks II. Nuclear Power Plant Ltd. and MVM ERBE. The authors want to thank J ' ozsef B ' an ' ati and R ' obert D ' aniel R ' adi for their valuable comments and proposals made during the development of the RELAP5 model.
AB  - The Hungarian PMK-2 test facility is a scaled-down model of the VVER-440/213 type pressurized water reactors of Paks NPP, on which several measurement series have been carried out since the 80s. One of these series include four Standard Problem Exercises (SPE), primarily small-break loss-of coolant accident (SBLOCA) transients, performed in cooperation with IAEA. New RELAP5, TRACE and APROS models have already been developed and a comparative analysis of the results has been published recently for the PMK SPE-4 experiment. In that SBLOCA scenario, no high-pressure injection system (HPIS) was available, but a secondary side bleed and feed operation has been performed during the transient. This paper is a continuation of the previous one and presents the required model modifications and the analysis of the second SPE. The initiating event, similarly to the SPE-4 experiment, is a 7.4% break located at the top of the downcomer, while the main differences are that one line of the HPIS is available and no secondary side feed and bleed operation is performed in this case. One of the main objectives of the experiment was to verify that these safety measures are enough to prevent core dry-out. In addition to the investigation of this question, a sensitivity study was also carried out with respect to selected parameters that might have a significant impact on the characteristic of the simulated processes. The assessment of the results has also been performed with two quantitative methods, namely the Fast Fourier Transform Based Method with Signal Mirroring (FFTBM-SM) and Stochastic Approximation Ratio Based Method (SARBM).
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Varju, Tamás
AU  - Aranyosy, Ádám
AU  - Orosz, Róbert
AU  - Holl, Viktor
AU  - Hajas, Tamás Zoltán
AU  - Aszódi, Attila
TI  - Analysis of the IAEA SPE-4 small-break LOCA experiment with RELAP5, TRACE and APROS system codes
JF  - NUCLEAR ENGINEERING AND DESIGN
J2  - NUCL ENG DES
VL  - 377
PY  - 2021
SN  - 0029-5493
DO  - 10.1016/j.nucengdes.2021.111109
UR  - https://m2.mtmt.hu/api/publication/31936687
ID  - 31936687
LA  - English
DB  - MTMT
ER  -