Povilas Poškas

Nuclear Engineering Laboratory (14)
Head (Chief research associate)
Room number:
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Book or monograph chapter


Miliauskas G., Puida E., Poškas R. [LEI], Poškas P. [LEI]. Modelling of the influence of droplet dispersity on droplet vaporization in the high-temperature flue gas in the case of combined heating In: Prime archives in sustainability . Hyderabad (Indija): Vide Leaf, 2021, p. 1-51. ISBN 978-81-944664-1-3.


Poškas P. [LEI]. Progress on Nuclear Waste Management. Nuclear Waste Governance in Lithuania In: Challenges of Nuclear Waste Governance: An International Comparison. Germany: Springer Fachmedien Wiesbaden GmbH, 2018, Vol. II, p. 139-160. ISBN 978-3-658-21440-1, eISBN 978-3-658-21441-8.



Barinova E., Beer H. F., Bradbury D., Dunzik-Gougar M. L., Fachinger J., Hand R., Jones A., Karlina O., Kascheev V., Lamouroux C., Laurent G., Leganes Nieto J. L., Li J. F., Lindberg M., Metcalfe M. P., Narkūnas E. [LEI], Norris S., Ojovan M. I., Oryšaka A., Petit L., Poškas P. [LEI], Rahmani L., Tomlinson T., von Lensa W., Wickham A. J., Zlobenko B.. Processing of irradiated graphite to meet acceptance criteria for waste disposal In: IAEA TECDOC-1790. Vienna: International Atomic Energy Agency, 2016, p. 1-148. ISSN 1011-4289 ISBN 978-92-0-104016-9.

Scientific article


Poškas R. [LEI], Račkaitis K. [LEI], Poškas P. [LEI], Jouhara H.. Modelling of the fire impact on CONSTOR RBMK-1500 cask thermal behavior in the open interim storage site In: Nuclear Engineering and Technology. Daejeon: Elsevier, 2023, Vol. 55, Iss. 7, p. 2604-2612. ISSN 1738-5733.
Poškas R. [LEI], Račkaitis K. [LEI], Poškas P. [LEI], Jouhara H.. The numerical analysis of the impact of CASTOR-1500 cask model simplifications on temperature distribution in the cask In: Annals of Nuclear Energy. Oxford: Elsevier, 2023, Vol. 184, 109688, p. 1-8. ISSN 0306-4549, eISSN 1873-2100.


Poškas R. [LEI], Sirvydas A. [LEI], Kulkovas V. [LEI], Poškas P. [LEI], Jouhara H., Miliauskas G., Puida E.. Flue Gas Condensation in a Model of the Heat Exchanger: The Effect of the Cooling Water Flow Rate and Its Temperature on Local Heat Transfer In: Applied sciences. Basel: MDPI, 2022, Vol. 12, Iss. 24, 12650, p. 1-17. ISSN 2076-3417.
Narkūnas E. [LEI], Šmaižys A. [LEI], Poškas P. [LEI], Šimonis A. [LEI], Naumov V., Ekaterinichev D.. Gamma Radiation Shielding Assessment Using Stochastic, Deterministic, and Experimental Methods for RBMK-1500 SNF Storage Cask In: Nuclear Technology . Philadelphia: American Nuclear Society, 2022, Vol. 208, Iss. 12, p. 1876-1889. Scopus . ISSN 0029-5450 , eISSN 1943-7471.
Miliauskas G., Puida E., Poškas R. [LEI], Poškas P. [LEI], Balčius A., Jouhara H.. The modeling of transient phase changes of water droplets in flue gas flow in the range of temperatures characteristic of condensing economizer technologies In: Energy. Oxford: Elsevier, 2022, Vol. 257, 124719, p. 1-12. ISSN 0360-5442.
Narkūnienė A. [LEI], Justinavičius D. [LEI], Poškas P. [LEI], Grigaliūnienė D. [LEI], Ragaišis V. [LEI]. The Modeling of Laboratory Experiments on Granular MX‐80 Bentonite with COMSOL Multiphysics In: Minerals. Basel: MDPI, 2022, Vol. 12, No. 3, 277, p. 1-20. ISSN 2075-163X.
Ragaišis V. [LEI], Kaliatka T. [LEI], Poškas P. [LEI], Kaliatka A. [LEI], Šmaižys A. [LEI], Janulionis R. [LEI], Narkūnas E. [LEI], Sirvydas A. [LEI], Babilas E. [LEI], Rimkevičius S. [LEI]. A proposed approach for the evaluation of consequences of a large aircraft crash accident at an RBMK type reactor site during decommissioning In: Progress in Nuclear Energy. Oxford: Elsevier, 2022, Vol. 145, 104135, p. 1-15. ISSN 0149-1970, eISSN 1878-4224.


Poškas R. [LEI], Sirvydas A. [LEI], Kulkovas V., Jouhara H., Poškas P. [LEI], Miliauskas G., Puida E.. An Experimental Investigation of Water Vapor Condensation from Biofuel Flue Gas in a Model of Condenser, (2) Local Heat Transfer in a Calorimetric Tube with Water Injection In: Processes. Basel: MDPI, 2021, Vol. 9, Iss. 8, 1310, p. 1-18. Scopus. ISSN 2227-9717.
Narkūnienė A. [LEI], Poškas P. [LEI], Justinavičius D. [LEI]. The Modeling of Laboratory Experiments with COMSOL Multiphysics Using Simplified Hydromechanical Model In: Minerals . Basel: MDPI, 2021, Vol. 13 (7), 754, p. 1-18. ISSN 2075-163X.

Conference paper


Šimonis A. [LEI], Poškas G. [LEI], Poškas P. [LEI], Klevinskas G.. Decommissioning of Radon Type Radioactive Waste Storage Facility in Lithuania In: International Conference on Radioactive Waste Management: Solutions for a Sustainable Future (IAEA), November 1-5, 2021, Vienna, Austria. Vienna: IAEA, 2021, CN-294, p. 96-96..
Poškas R. [LEI], Sirvydas A. [LEI], Kulkovas V. [LEI], Poškas P. [LEI]. Preliminary investigations of water injection impact on vapour from flue gases condensation in a model of a vertical condensing heat exchanger In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 548-556. ISSN 1822-7554.
Poškas R. [LEI], Račkaitis K. [LEI], Poškas P. [LEI], Zujus R. [LEI]. Modeling and analysis of the flow structure in narrow helium and air gaps of the castor cask for RBMK-1500 spent nuclear fuel storage In: Proceedings 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (ATE-HEFAT2021), Virtual conference, 26-28 July 2021.. Amsterdam: American Society of Thermal and Fluids Engineers, 2021, p. 1421-1426. ISBN 978-1-77592-216-2 .
Puida E., Miliauskas G., Poškas R. [LEI], Poškas P. [LEI], Paukštaitis L.. An experimental investigation of the ęffęct of airlow heating and humidification on a water droplet’s thermal state and phase changes In: Proceedings 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (ATE-HEFAT2021), Virtual conference, 26-28 July 2021.. Amsterdam: American Society of Thermal and Fluids Engineers, 2021, p. 224-229. ISBN 978-1-77592-216-2.


Narkūnas E. [LEI], Šmaižys A. [LEI], Poškas P. [LEI]. Preliminary inventory of C-14 in irradiated graphite of Ignalina NPP unit 1 RBMK-1500 reactor In: EURADWASTE ’19 Conference Proceedings 9th European Commission Conference on EURATOM Research and Training in Radioactive Waste Management 4-7 June, 2019 Pitesti, Romania . Luxembourg: European Union, 2020, p. 682. ISBN 978-92-79-98750-2.
Grigaliūnienė D. [LEI], Poškas P. [LEI], Kilda R. [LEI], Narkūnas E. [LEI]. Estimation of 14C release and migration from RBMK-1500 reactor graphite disposed of in a potential geological repository in crystalline rocks in Lithuania In: EURADWASTE ’19 Conference Proceedings 9th European Commission Conference on EURATOM Research and Training in Radioactive Waste Management 4-7 June, 2019 Pitesti, Romania. Luxembourg: European Union, 2020, p. 681. ISBN 978-92-79-98750-2.


Poškas R. [LEI], Sirvydas A. [LEI], Poškas P. [LEI], Striūgas N. [LEI], Pedišius N. [LEI], Valinčius V. [LEI]. Investigation of the biofuel flue and producer gases cleaning efficiency using ESP In: E3S Web of Conferences. 7 November 2017. Didžioji Britanija . EDP Sciences, 2017, Vol.22, p. 1-7..


Grigaliūnienė D. [LEI], Poškas P. [LEI], Kilda R. [LEI]. Waste zone conceptual model effect on predicted radionuclide flux from near surface repository In: Book of papers Session 3b VLLW of International Conference on the Safety of Radioactive Waste Management (IAEA, CN-242). 2017). Vienna Austria: IAEA, 2016, p. 38-41..

International projects

Horizon Europe


The project aims to establish and clarify the benefits and added value of more aligned and harmonised regulations and standards for prioritised topics related to decommissioning and iMore

Horizon 2020


The Objective: The European Green Deal, an ambitious growth strategy aligned with the Sustainable Development Goals (SDG), calls for the mobilization of the industry. Indeed, while iMore

EURAD project logo

Following decades of RD&D in support of the safe management and disposal of radioactive waste, and building on the preparatory work of the recent EC JOPRAD project, a European JoiMore

SHARE project logo

According to the projections based on likely remaining life-times of the World’s legacy nuclear fleet, the workload and budgets to be dedicated for nuclear decommissioning is going toMore


Safe management of radioactive waste is challenging to waste producers and waste management organisations. Deployment of thermal treatment in an optimised waste management lifecycle cMore


The overall objective of the project is to develop and test the tools necessary for the assessment of the hydro-mechanical evolution of an installed bentonite barrier and its resultinMore


The coordination action SITEX-II aims at implementing in practice the activities along with the interaction modes issued by the FP7 program SITEX project (2012-2013), in view of develMore

Seventh Framework Programme (FP7)


The ARCADIA project has been conceived so as to provide a twofold support to the further development of nuclear research programs in the NMS, targeting two major areas included in theMore


The CAST project (CArbon-14 Source Term) aims to develop understanding of the generation and release of 14C from radioactive waste materials under conditions relevant to waste packagiMore


The objective of PLATENSO is to provide a proposal towards establishing the legal base for a European Entity on Socio-Economic matters linked to nuclear technology and to develop recoMore


SITEX aims at identifying the efficient means that should be developed through the establisment of a sustainable expertise function network within a European framework with the view tMore


NEWLANCER project proposes to identify and implement effective and efficient actual solutions leading to enlarged NMS involvement in future Euratom Framework Programmes by strengtheniMore


The multiple barrier concept is the cornerstone of all proposed schemes for underground disposal of radioactive wastes. The concept invokes a series of barriers, both engineered and nMore


Gas-Cooled Reactors (GCR), RBMK and some Material Test Reactors (MTR) make use of graphite as moderator of the fuel, structures of the core and/or thermal columns. During operation, tMore



The present spent nuclear fuel (SNF) management concept in the Lithuania foresees dry storage of SNF for 50 years. During this time the final SNF management concept shall be developedMore


Coordinator: Lithuanian Energy Institute (LEI)More


Coordinator: Lithuanian Energy Institute (LEI), LithuaniaMore


Coordinator: Lithuanian Energy Institute (LEI)More

Other international projects


The goal of this project is to prepare the setting up of a “Joint Programming on Radioactive Waste Disposal” that would be established to coordinate at the European level, national reMore

Projects in Lithuania

Research Council of Lithuania projects

Lietuvos mokslo taryba

Comprehensive research and application of "Rūkas" technology for biofuel smoke purification and waste heat recovery ID (LMT): P-MIP-20-2 Nr.: 14-1963.20.22 Coordinator: LitMore