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Augutis J, Babilas E, Dundulis G, Kaliatka A, Kaliatka T, Krikštolaitis R, Martišauskas L, Rimkevičius S, Pabarčius R, Povilaitis M, Stankūnas G, Urbonas R, Urbonavičius E. Scientific inheritance of Eugenijus Ušpuras. KERNTECHNIK 2021. [DOI: 10.1515/kern-2020-850203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This article is written to honour the scientific achievements of prof. Eugenijus Ušpuras, who passed away in 2019. Therefore, his colleagues summarized retrospectively main research topics like safety studies for Ignalina NPP, research in nuclear fusion and investigations in energy security prof. E. Ušpuras worked with. Since prof. Eugenijus Ušpuras spent his entire scientific career at Lithuanian Energy Institute (LEI) all these three topics are directly related to the development of the nuclear energy topics and research performed in Lithuania during the last decades.
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Povilaitis M, Urbonavičius E. Post-benchmark simulation of the THAI+ facility TH27 experiment. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1432424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mantas Povilaitis
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujosg. 3, Kaunas, Lithuania
| | - Egidijus Urbonavičius
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujosg. 3, Kaunas, Lithuania
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Povilaitis M, Kelm S, Urbonavičius E. The Generic Containment SB-LOCA accident simulation: Comparison of the parameter uncertainties and user-effect. ANN NUCL ENERGY 2017. [DOI: 10.1016/j.anucene.2017.03.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Urbonavičius E, Povilaitis M, Kontautas A. Assessment of W7-X plasma vessel pressurisation in case of LOCA taking into account in-vessel components. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Povilaitis M, Kačegavičius T, Urbonavičius E. Simulation of the ICE P1 test for a validation of COCOSYS and ASTEC codes. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Povilaitis M, Urbonavičius E, Rimkevičius S, Babilas E. Sensitivity and uncertainty analysis of atmosphere stratification modelling in MISTRA using lumped-parameter code COCOSYS. Nuclear Engineering and Design 2013. [DOI: 10.1016/j.nucengdes.2013.08.058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Jusevičiu-tė A, Kaliatka A, Urbonavičius E, Duškesas G, Juodis L, Sonnenburg HG. Assessment of FEMAXI and TESPA-ROD codes for modelling of BDBA in RBMK-1500. KERNTECHNIK 2013. [DOI: 10.3139/124.100558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Processes occurring during the reactor operation and accidents change the thermal, chemical and other properties in nuclear fuel rods. This paper describes the processes in the nuclear fuel rods and tools for simulation at these processes. Fuel rods used at Ignalina NPP were simulated with FEMAXI-V (Japan) and TESPA-ROD (Germany) codes. Developed models were employed for the analysis of processes in fuel rods in case of large LOCA Beyond Design Basis Accident (BDBA). The developed models and results of the analysis are presented in this paper.
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Affiliation(s)
- A. Jusevičiu-tė
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos g. 3, Kaunas LT-44403, Lithuania. E-mail:
| | - A. Kaliatka
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos g. 3, Kaunas LT-44403, Lithuania. E-mail:
| | - E. Urbonavičius
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos g. 3, Kaunas LT-44403, Lithuania. E-mail:
| | - G. Duškesas
- Institute of Physics, Savanoriu pr. 231, LT-02300, Vilnius, Lithuania
| | - L. Juodis
- Institute of Physics, Savanoriu pr. 231, LT-02300, Vilnius, Lithuania
| | - H. G. Sonnenburg
- Gesellschaft für Anlagen und Reaktorsicherheit GRS (mbH), Forschungsgelände, 85748 Garching, Germany
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Kontautas A, Babilas E, Urbonavičius E. COCOSYS analysis for deposition of aerosols and fission products in PHEBUS FPT-2 containment. Nuclear Engineering and Design 2012. [DOI: 10.1016/j.nucengdes.2012.02.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Urbonavičius E, Kaliatka A, Vileiniškis V. Integral analysis of large LOCA beyond design basis accident scenario in RBMK-1500. Nuclear Engineering and Design 2010. [DOI: 10.1016/j.nucengdes.2009.10.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Babilas E, Rimkevičius S, Urbonavičius E. Heat transfer to the building structures of the Ignalina NPP accident localisation system. KERNTECHNIK 2010. [DOI: 10.3139/124.110059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The performed thermal-hydraulic analysis of the Accident Localisation System (ALS) has shown, that in the case of a Maximum Design Basis Accident (MDBA), in the long term, a significant amount of energy (∼40%) is transferred to the building structures. Therefore, special attention should be paid to the correct simulation of the building structures and heat transfer processes. Free convection, forced convection, condensation and conductivity are the phenomena, which are connected with the heat transfer to the building structures and should be investigated. In this paper, the heat transfer models available in the COCOSYS code, which is applied for the analysis, are discussed. The influence of the heat transfer models on the behaviour of thermal-hydraulic parameters in ALS compartments during MDBA is investigated.
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Affiliation(s)
| | | | - E. Urbonavičius
- Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos 3, LT-44403 Kaunas, Lithuania. E-mail:
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Ušpuras E, Kaliatka A, Augutis J, Rimkevičius S, Urbonavičius E, Kopustinskas V. Safety analysis of beyond design basis accidents in RBMK-1500 reactors. ANN NUCL ENERGY 2007. [DOI: 10.1016/j.anucene.2007.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rimkevičius S, Urbonavičius E, Č≐sna B. Simulation of Ignalina NPP accident localisation system behaviour employing the RALOC4 code in the case of group distribution header rupture. Nuclear Engineering and Design 2002. [DOI: 10.1016/s0029-5493(02)00031-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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