select language:  lietuvių  |    english
About LEI
Scientific Divisions
Laboratory of Heat-Equipment Research and Testing (12)
Laboratory of Combustion Processes (13)
Nuclear Engineering Laboratory (14)
Plasma Processing Laboratory (15)
Laboratory of Materials Research and Testing (16)
Laboratory of Nuclear Installation Safety (17)
Laboratory of Nuclear Installations Safety (17) - part_2
Center for Hydrogen Energy Technologies (18)
Laboratory for Renewable Energy and Energy Efficiency (20)
Laboratory of Systems Control and Automation (21)
Laboratory of Energy Systems Research (31)
Laboratory of Hydrology (33)
International Projects
PhD Studies

Scientific Divisions / Laboratory of Nuclear Installation Safety (17) / Laboratory of Nuclear Installations Safety (17) - part_2


  European Nuclear Safety Training and Tutoring Institute

ENSTTI was established in 2010. The Institute is closely related to the European Technical Safety Organization Network ETSON and technical safety organizations participating in this EU community. The objective of ENSTTI is to provide training, consulting and practical services in the assessment of nuclear and radiation safety. It is intended for technical support organizations to share their experience on enhancing nuclear safety, dissemination of news and practical experience in the field of nuclear safety culture.
Specialists of the Laboratory of Nuclear Installation Safety completed the implementation of a two-phase training project Training and tutoring for experts of the Nuclear Regulatory Authorities and their technical support organizations ordered by the European Commission. In accordance with the project the laboratory specialists participated in three training courses, two of which took place in LEI:

1. Nuclear Reactor Safety I, Bologna, Italy, May 2-6.,
2. Criticality Safety, Kaunas, Lithuania, May 9-13.,
3. Regulatory framework for decommissioning of Nuclear Facilities, Kaunas, Lithuania, May 16-20.
Trainings on criticality safety were also held by specialists from Ukraine (SSTC NRS) and Italy (ENEA), whereas trainings on nuclear objects decommissioning – by SSTC NRS (Ukraine) and IRSN (France) specialists. Participants were from different countries: Egypt, South Korea, Malaysia, Nigeria, Ukraine and Vietnam.

Since 2016 ENSTTI launched a new training project organized following the order of the European Commission Training and Tutoring for experts of the National Regulatory Authorities and their Technical Support Organisations for developing or strengthening their regulatory and technical capabilities. In accordance with this project a tutoring was organized for three nuclear energy specialists from Algeria. Tutoring Safety assessment of nuclear reactors was comprised of two parts: introductory part common for all specialists and specific trainings prepared for each specialist individually with certain individual tasks. During introductory first month trainings the specialists from Algeria were introduced with basics of nuclear energy safety and deterministic safety analysis. The laboratory specialists delivered lectures and consulted on the issues of reactor neutron kinetics, processes in nuclear fuel rods, reactor cooling circuits and their surrounding containments and probabilistic safety assessment. In the second tutoring part the foreigners performed individual tasks, they were consulted by LEI experts of certain field. The tutees developed numerical models of nuclear fuel rods or experimental facility, conducted structural and thermal-hydraulic analysis for nuclear fuel rods. The tutees from Algeria were also consulted on best estimate application issues, they used all available (at the institute) technical and software equipment. Active participation of LEI specialists in training courses and tutoring as well as their organization is beneficial for the organizers as well – in such way the institute is being promoted, new contacts are created, information is updated and systemized, qualification of consultants-experts is constantly improved.

Meeting of LEI experts and tutees from Algeria with the ENSTTI tutoring manager
Meeting of LEI experts and tutees from Algeria with the ENSTTI tutoring manager

  Transfer of the European Regulatory Methodology and Practice to the Nuclear Safety Authority of Belarus

In 2016, works of BY3.01/09 (BE/RA/07-A) project Development of technical cooperation in nuclear safety in the field of assistance to regulatory authorities, initiated and financed by the European Commission, were continued. The objective of this project is to support Regulatory Body of Republic of Belarus Gosatomnadzor in nuclear safety regulation activities, in licensing construction for Belarus NPP, also training Belarusian experts to properly perform the review of documents related to nuclear activity. In 2016, the first part of the project, related with support in supervising licencing documents, was completed, meanwhile the second part of the project, devoted to trainings of Belarus experts on how to use Western software codes, was launched. Experience gained by these experts will enable them to conduct independent safety analysis for constructed Belarus NPP. In BE/RA/07 project, which is managed by RISKAUDIT, besides LEI, the role of European experts was played by GRS and HZDR (Germany) and SSTC NRS (Ukraine). LEI specialists will participate in the trainings for preparing Belarusian experts on how to use ATHLET, COCOSYS and ASTEC codes. Trainings will be launched in 2017.

Such support to the neighbour country is necessary in order to ensure timely and effective supervision of the constructed nuclear power plant by Belarus nuclear regulation institutions. This is very important not only for Belarus, but also for Lithuania (at the border of which this nuclear power plant is constructed) and for the entire Europe.


  European Technical Safety Organizations Network

Since 2009, the researchers of the Laboratory of Nuclear Installation Safety have participated in the activity of European Technical Safety Organizations Network (ETSON). Presently, ETSON consists of ten member organizations: BelV (Belgium), INRNE BAS (Bulgaria), CV Rez (Czech Republic), AMEC (Great Britain), LEI (Lithuania), IRSN (France), VTT (Finland), PSI (Switzerland), JSI (Slovenia), VUJE (Slovakia), MTA (Hungary), GRS (Germany), and three associated member organizations: JNES (Japan), SEC NRS (Russia) and SSTC (Ukraine). In 2015, new ETSON president was elected, BelV director general Benoît De Boeck.

The main objectives of ETSON are as follows:
• stand for an exchange forum on scientific research and development of nuclear energy safety;
• contribute to fostering the convergence of nuclear safety practice in Europe and beyond;
• plan nuclear safety scientific research programs and promote their implementation;
• speed up the application of the EU Directive on nuclear safety;
• cooperate in implementation of safety assessment and research projects.

Fourteen expert groups were established in ETSON network in key nuclear safety research areas.
LEI representatives actively participate and have their representatives in all the main structures and groups of ETSON organization. In 2016, LEI specialists participated in ETSON organization network forum EUROSAFE, which was held in Munich on November 7-8. Issues of nuclear safety, scientific research, nuclear waste management, radiation safety and emergency preparedness as well as nuclear equipment and materials’ security were analysed. The chairman in the section of nuclear waste management, operation decommissioning and dismantling was appointed LEI director. LEI activity was represented in poster as well. Participation of ETSON members in planned and implemented EU projects is constantly being discussed  in ETSON expert and  coordinating group meetings, for example in programme Horizon 2020.  At these meetings one can learn about the latest ideas of performance and application of deterministic safety, risk assessment and probabilistic analysis and contribute to the implementation of new research and applied works in the field of nuclear safety analysis. Participation of young researchers enables to get better involved into a network of young specialists from different countries, encourage scientific and intercultural cooperation. Therefore, participation in ETSON network helps to get involved in new international projects and promote LEI.

  NUclear GENeration II & III Association

Lithuanian Energy Institute has participated in the activity of NUGENIA association, encompassing activities of Sustainable nuclear energy technology platform (SNETP) and competence networks NULIFE and SARNET, since its very establishment in 2011. NUGENIA association unites industry, research and safety organizations, executing general research and development projects in the field of nuclear energy. The association initiates and coordinates relevant research for the II and III generation nuclear reactors operated in the EU states. The activity of NUGENIA is organized for eight research directions:

  1. Nuclear power plant safety and risk assessment.
  2. Severe accidents.
  3. Improved reactor operation.
  4. Integrity assessment of Systems, Structures and Components.
  5. Development of new nuclear fuel, waste and spent fuel management, decommissioning.
  6. Innovative LWR design & technology.
  7. Harmonisation.
  8. In-service Inspection and Non Destructive Examination.

NUGENIA association has developed an open innovation platform, where all the projects implemented by members of the association are stored. In this way, due to joint efforts of members of the association, the projects are brought to perfection, and project proposals prepared for Horizon 2020 calls may be submitted for evaluation only after obtaining NUGENIA label of the Board that guarantees the quality of the project. Using open access innovation platform, LEI joined to the preparation of a variety of projects . Almost all 14 project proposals with LEI participation for Horizon 2020 calls for 2016-2017 were prepared due to the open innovation platform. Therefore, participation in NUGENIA meetings and annual NUGENIA forums, where implemented and planned projects are discussed as well as being connected to the open innovation platform is highly valuable and beneficial.

  European Safety, Reliability & Data Association

ESReDA is an European association, providing a possibility to communicate and exchange information on the issues of safety and reliability in the field of scientific research. LEI is a part of this association. ESReDA constantly organizes seminars and initiates project groups aimed at preparation of publications (books) in the relevant fields of scientific research on reliability and safety of energy and industrial objects. ESReDA project groups at the moment:

−    Critical Infrastructure Preparedness and Resilience: Data for Modelling, Simulation & Analysis (CI‐PR / MS&A‐Data), leader of project group – Mohamed Eid, CEA, France;
−    Reliability of Wind Turbines, leader of project group – Alaa Chateauneuf, Blaise Pascal University, France;
−    Foresight in Safety, leader of project group – Nicolas Dechy, IRSN, France.

A new ESReDA board was elected for two years during the meeting of ESReDA General Assembly in May 2016, Inga Žutautaitė (senior researcher at LEI) was elected as a General Secretary of ESReDA.
Two ESReDA seminars took place in 2016: the 50th seminar “25th years of ESReDA Seminars Safety and reliability enhancement throughout Europe: Looking back, looking ahead“ in Seville (Spain) and the 51st seminar „Maintenance and Life Cycle Assessment of Structures and Industrial Systems“ in Clermont-Ferrand(France).

The 51st ESReDA Seminar (October 21-22, 2016; Clermont-Ferrand, France)

The 52nd ESReDA Seminar on Critical Infrastructures: Enhancing Preparedness & Resilience for the security of citizens and services supply continuity was held in Kaunas on the 30th-31st May, 2017. This was the second ESReDA project group CI‐PR / MS&A‐Data seminar, which was organized by Mohamed Eid (CEA, France) together with Lithuanian Energy Institute and Vytautas Magnus University.

FUSENET the European Fusion Education Network

FUSENET association is the European Fusion Education Network, uniting European universities, research centers and industrial organizations participating in fusion research. ITER international organization also belongs to this network. Since mid 2013, LEI has been a member of this association. Participation in the association activity enables PhD students and junior researchers to take a more effective part in different trainings and exchange programs in all organizations of Fusenet association. In 2016, the 5th Fusenet General assembly meeting took place in Cadarache (France), where objective and financial report and work plans for year 2016 were discussed. Also introductory visit to sightseeing the ongoing ITER reactor constructions was organized.


In 2016, four PhD students studied at the Laboratory of Nuclear Installation Safety. One doctoral dissertation in the field of energetics and thermal engineering was defended – Reliability of energy networks considering uncertain and time-dependent data (T. Iešmantas). Young PhD doctors together with experienced scientists presented the investigation results obtained in 2016 in science research reports and 40 scientific articles (15 out of those in the journals referred in Clarivate Analytics Web of Science Core Collection database); 20 papers were presented at scientific conferences. The researchers of the Laboratory participated in the events related to nuclear topics and presented papers at all main international conferences, where safe operation of nuclear power plants and physical phenomena occurring in them were analysed.

Laboratory researchers participated in international internships. Young PhD Tadas Kaliatka won a competition of Atomic Energy Researchers and Research Students Acceptance Program FY-2015 established by Fukui International Human Resources Development Center for an internship spot in the field of thermal-hydraulic analysis and nuclear safety; the competition was really harsh – 20 candidates to one place from all over the world. He had a six month internship at Research Institute of Nuclear Engineering, University of Fukui (RINE-UF) in Japan, work topic - ABWR reactor thermal-hydraulic analysis. Meanwhile the other two Laboratory researchers were granted by mobile scholarships within the framework of the NUGENIA PLUS FP7 programme. This program provides a possibility to visit NUGENIA association research institutions and get acquainted with the available infrastructure. PhD student Audrius Graževičius had a 6 week internship at Global Research for Safety Centre, GRS (Germany). Internship topic – thermal-hydraulic analysis of spent fuel storage pool using 3D numerical codes ANSYS-CFX. Another young researcher Stasys Gasiūnas had a six week internship at Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Germany. Internship topic – modeling of stratified vapour-water two-phase flow including interphase heat and mass transfer using ANSYS CFX code. PhD students, A. Graževičius and M. Drūlia, participated in final trainings in Paris, in accordance with EC DG ENER mobile and training program.

Internship Certificate award ceremony. Director of RINE prof. Y. Anoda and dr. T. Kaliatka

The researchers of the Laboratory also actively participated in different international and national training programs, IAEA seminars, committee and coordinating meetings, in the activity of FUSION development committees and other organizations and scientific institutions. Dr. Inga Žutautaitė, senior research associate of the Laboratory, was elected General Secretary for European Safety, Reliability & Data Association, ESReDA. All the above activities contribute to strengthening the expertise of Lithuanian specialists in nuclear energy field, which is necessary for each state that has nuclear energy installations (NPPs, nuclear fuel and radioactive waste storage facilities and repositories, etc.) and that carries out the country’s nuclear program.

<<< Back to Part 1 of laboratory description

1. Projects funded by the Government of the Republic of Lithuania
2. Highest level scientific research financed by the European Union
3. Scientific research carried out following agreements with EU and Lithuanian economic subjects


© Lithuanian Energy Institute, 2005-2019. All rights reserved.
Data is accumulated and stored in Register of Legal Entities, code 111955219 | VAT number LT119552113