Valdas Ragaišis

Nuclear Engineering Laboratory (14)
Senior research associate
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Scientific article


Miliauskas G., Puida E., Poškas R. [LEI], Ragaišis V. [LEI], Paukštaitis L., Jouhara H., Mingilaitė L.. Experimental investigations of water droplet transient phase changes in flue gas flow in the range of temperatures characteristic of condensing economizer technologies In: Energy. Oxford: Elsevier, 2022, Vol. 256, 124643, p. 1-11. ISSN 0360-5442, eISSN 1873-6785.
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.


Ragaišis V. [LEI], Poškas P. [LEI], Kilda R. [LEI], Bartkus G. [LEI]. A review of uncertainties in the assessment of the radiological impact of liquid releases to the Ignalina NPP cooling pond lake Drūkšiai In: Annals of Nuclear Energy. Oxford: Elsevier, 2021, Vol. 157, 108228, p. 1-10. ISSN 0306-4549.


Ragaišis V. [LEI], Poškas P. [LEI], Šimonis V. [LEI], Narkūnas E. [LEI]. Updating of the public dose assessment approach for decommissioning related releases from the Ignalina NPP In: Annals of Nuclear Energy. Oxford, England: Elsevier, 2016, Vol. 94, p. 93-101. ISSN 0306-4549.
Narkūnas E. [LEI], Šmaižys A. [LEI], Poškas P. [LEI], Ragaišis V. [LEI]. Modelling of RBMK-1500 SNF storage casks activation during very long term storage In: Applied Radiation and Isotopes. Netherlands: Elsevier, 2016, Vol. 115, p. 100-108. ISSN 0969-8043.


Ragaišis V. [LEI], Ahmad S.. Methodology for safety assessment applied to predisposal waste management In: Methodology for safety assessment applied to predisposal waste management. Vienna: International Atomic Energy Agency, 2015, p. 1-47. ISSN 1011-4289 ISBN 978-92-0-109215-1.
Ragaišis V. [LEI], Poškas P. [LEI], Šimonis A. [LEI]. Methodology for the scoping assessment of radioactive releases during dismantling of RBMK-1500 reactor systems with low-level contamination In: Annals of Nuclear Energy. Oxford: Elsevier, 2015, Vol. 75, p. 193-198. ISSN 0306-4549.

International projects

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


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

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


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