Valdas Ragaišis

2025

• Valdas Ragaišis, Povilas Poškas, Audrius Šimonis. Derivation of specific clearance levels for landfill disposed of waste at Ignalina NPP , Progress in Nuclear Energy — DOI: 10.1016/j.pnucene.2025.105816

2022

• Ragaišis, V., Kaliatka, T., Poškas, P., Kaliatka, A., Šmaižys, A., Janulionis, R., Narkūnas, E., Sirvydas, A., Babilas, E., Rimkevičius, S.. A proposed approach for the evaluation of consequences of a large aircraft crash accident at an RBMK type reactor site during decommissioning , Progress in Nuclear Energy — DOI: 10.1016/j.pnucene.2022.104135
• Miliauskas, G., Puida, E., Poškas, R., Ragaišis, V., 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 , Energy — DOI: 10.1016/j.energy.2022.124643
• Narkuniene, A., Justinavicius, D., Poskas, P., Grigaliuniene, D., Ragaisis, V.. The Modeling of Laboratory Experiments on Granular MX-80 Bentonite with COMSOL Multiphysics , Minerals — DOI: 10.3390/min12030277

2021

• Ragaišis, V., Poškas, P., Kilda, R., Bartkus, G.. A review of uncertainties in the assessment of the radiological impact of liquid releases to the Ignalina NPP cooling pond lake Drūkšiai , Annals of Nuclear Energy — DOI: 10.1016/j.anucene.2021.108228

2016

• Narkunas, E., Smaizys, A., Poskas, P., Ragaisis, V.. Modelling of RBMK-1500 SNF storage casks activation during very long term storage , Applied Radiation and Isotopes — DOI: 10.1016/j.apradiso.2016.06.015
• Ragaišis, V., Poškas, P., Šimonis, V., Narkunas, E.. Updating of the public dose assessment approach for decommissioning related releases from the Ignalina NPP , Annals of Nuclear Energy — DOI: 10.1016/j.anucene.2016.02.028

2015

• Ragaišis, V., Poškas, P., Šimonis, A.. Methodology for the scoping assessment of radioactive releases during dismantling of RBMK-1500 reactor systems with low-level contamination , Annals of Nuclear Energy — DOI: 10.1016/j.anucene.2014.08.027

2014

• Ragaišis, V., Poškas, P., Šimonis, V., Šmaižys, A., Kilda, R., Grigaliuniene, D.. The environmental impact assessment process for nuclear facilities: A review of the Lithuanian practice and experience , Progress in Nuclear Energy — DOI: 10.1016/j.pnucene.2014.01.014

2013

• Šimonis, V., Ragaišis, V., Šmaizys, A.. Thermal assessment of new Ignalina NPP casks for spent nuclear fuel storage at some abnormal conditions , Mechanika — DOI: 10.5755/j01.mech.19.2.4153

2012

• Poskas, P., Adomaitis, J.E., Ragaisis, V., Simonis, V., Smaizys, A., Kilda, R., Grigaliuniene, D.. Progress of radioactive waste management in Lithuania , Progress in Nuclear Energy — DOI: 10.1016/j.pnucene.2011.09.008
• Simonis, V., Poskas, P., Ragaisis, V.. Enhancement of heat transfer and hydraulic drag in gas-cooled helical channels with artificial roughness on convex wall , Nuclear Engineering and Design — DOI: 10.1016/j.nucengdes.2012.01.026

2011

• Poskas, P., Simonis, V., Smaizys, A., Sirvydas, A., Ragaisis, V., Kilda, R., Zujus, R.. Strategy, main stages and progress of the Ignalina Nuclear Power Plant decommissioning , Kerntechnik — DOI: 10.3139/124.110169
• Poskas, P., Simonis, V., Ragaisis, V.. Heat transfer in helical channels with two-sided heating in gas flow , International Journal of Heat and Mass Transfer — DOI: 10.1016/j.ijheatmasstransfer.2010.10.017
• Ragaisis, V., Poskas, P., Simonis, V., Adomaitis, J.E.. Environmental safety aspects of the new solid radioactive waste management and storage facility at the Ignalina Nuclear Power Plant , Kerntechnik — DOI: 10.3139/124.110174

2009

• Poskas, P., Ragaisis, V., Adomaitis, J.E.. Environmental safety aspects of the new spent nuclear fuel management and storage system at Ignalina NPP , Proceedings of the ICEM2007 - 11th International Conference on Environmental Remediation and Radioactive Waste Management — DOI: 10.1115/ICEM2007-7248

2008

• Poskas, P., Kilda, R., Ragaisis, V., Sullivan, T.M.. Impact of spatial heterogeneity of source term in near-surface repository on releases to groundwater pathway , Nuclear Technology — DOI: 10.13182/NT08-A3919
• Kilda, R., Poškas, P., Ragaišis, V., Grigaliuniene, D.. Assessment of radionuclide migration from the near-surface repository planned in Lithuania 2. Apvardai site,Radionuklidu̧ sklaidos iš numatomo Lietuvoje paviršinio radioaktyviu̧ju̧ atlieku̧ kapinyno vertinimas 2. Apvardu̧ aikštelė , Energetika

2007

• Kilda, R., Poškas, P., Ragaišis, V.. Assessment of radionuclide migration from the near-surface repository planned in Lithuania 1. Galilaukė site,Radionuklidu̧ sklaidos iš numatomo Lietuvoje paviršinio radioaktyviu̧ju̧ atliekiu̧ kapinyno vertinimas 1. Galilaukės aikštelė , Energetika

2006

• Kilda, R., Poškas, P., Ragaišis, V.. Analysis of the impact of heterogeneities in source distribution on radionuclide releases from near-surface repository to groundwater 2. Assessment of the impact of heterogeneities,Radioaktyviu̧ju̧ atlieku̧ heterogeniškumo i̧takos radionuklidu̧ sklaidai iš paviršinio kapinyno gruntiniais vandenimis analizė 2. Heterogeniškumo i̧takos i̧vertinimas , Energetika

2005

• Smaizys, A., Poskas, P., Ragaisis, V.. Modelling of the shielding capabilities of the existing solid radioactive waste storages at Ignalina NPP , Radiation Protection Dosimetry — DOI: 10.1093/rpd/nci212
• Ragaisis, V., Poskas, P.. Safety aspects of the new liquid radioactive waste solidification system at Ignalina NPP , Proceedings - 10th International Conference on Environmental Remediation and Radioactive Waste Management, ICEM'05

2003

• Poskas, P., Ragaisis, V., Smaizys, A.. Experience from safety assessment of the existing storage facility for solid radwaste at Ignalina NPP , Proceedings of the International Conference on Radioactive Waste Management and Environmental Remediation, ICEM — DOI: 10.1115/ICEM2003-4650