Past Projects

Project:

Main project features:

Joint Programming on Radioactive Waste Disposal (JOPRAD)

Year: 2016 – 2018

Client: Europian Commission

The objective of the project is to repare a proposal for the setting up of a “Joint Programming on Radioactive Waste Disposal”, to bring together at the European level, those aspects of R&D activities implemented within national research programmes where synergy from Joint Programming is identified.

Baltic Region Initiative for Long Lasting InnovAtive Nuclear Technologies (BRILLIANT)

Year: 2015 07 – 2018 07

Client: Europian Commission

The project aims to provide coordination and support activities in the frame of the nuclear technologies in Baltic region.

Preparation ofthe report of periodic safety assessment of Maišiagala radioactive waste storage

Year: 2015 04 – 2016 10

Client: RATA (radioactive waste management agency), Lithuania

Preparation of periodic safety assessment report of Maišiagala RADON type near surface radioative waste storage facility.

Nuclear Safety Cooperation with the Regulatory Authorities of Brazil (CNEN)

Year: 2015

Client: CNEN, Brazil

Provision of technical support for the Regulatory Authorities of Brazil (CNEN) in evaluation of radiological inventory for Angra 2 PWR type reactor to obtain source term for accidental releases from Angra 2.

Support to State Nuclear Safety Inspectorate (VATESI) in Review of Documents Related to Licensing of Ignalina NPP Decommissioning Activities. Support to the Assessment of Decommissioning of the Ignalina NPP

Year: 2009 - 2017

Client: VATESI, Lithuania

Support to VATESI in review of documents related to licensing of Ignalina NPP decommissioning activities (Decommissioning Project for INPP Unit 2 Final Shutdown and Defuelling Phase; Ignalina NPP Unit 1 Turbine Hall Equipment Decontamination and Dismantling Basic Design; INPP Boiler House Equipment Dismantling and Decontamination Design Development, Safety Justification Report; New Solid Waste Retrieval Facility (B2) аt Ignalina NPP, Preliminary Safety Assessment Report; Disposal Units for Short-lived Very Low Level Waste, Preliminary Safety Assessment Report; Storage of solid radioactive waste at INPP Buildings 155, 155/1, 157 and 157/1, Safety analysis Report; Interim storage of bituminized radioactive waste at INPP Building 158, Safety analysis Report; Interim Storage Facility for RBMK Spent Nuclear Fuel Assemblies from Ignalina NPP Units 1 and 2 (B1), Preliminary Safety Assessment Report; Buffer storage facility for very low level (VLL) radioactive waste, Safety Analysis Report).

Scientific technical assistance with "Numerical evaluation of response of the neutron probe in geological structure”

Year: 2014

Client: UAB „Minijos Nafta”

Development of numerical evaluation of neutron sounding response in the geological structures.

11c. Evaluation of the material backlog and radiological inventory of KNPP Units 1-4

Year: 2012 01 – 2016 09

Client: DP RAO, Bulgaria

Provision of technical support for Kozloduy NPP and DP RAO in evaluation of radiological inventory of the Kozloduy Nuclear Power Plant Units 1 to 4 for the decommissioning purposes.

TACIS, G3.01/06 (GE/RA/02), Transfer of European Regulatory Methodology and Practices to the Nuclear Safety Authority of Georgia. Contract N° 132-897 (Contract between the EC and Riskaudit)

Year: 2008 12 – 2009 06

Client: Nuclear Safety Authority of Georgia

The aim was to assist for the Nuclear Safety Authority of Georgia in order to improve Georgian Radiation safety laws to correspond the best practice of the European Countries Nuclear Regulatory.

7th Euroatom Framework Programme, Treatment and Disposal of Irradiated Graphite and Other Carbonaceous Waste (CARBOWASTE)

Year: 2008 04 – 2013 03

Client: European Commission

CARBOWASTE focuses on treatment and disposal of irradiated graphite and other carbonaceous waste. The further goal of experiments on irradiated nuclear graphite is developing a prototype installation for the decontamination of graphite so the radioactive waste has a lower volume and eventually the graphite can be reused.

7th Euroatom Framework Programme, Redox Phenomena Controlling Systems (ReCosy)

Year: 2008 – 2012

Client: European Commission

The aim was the sound understanding of redox phenomena controlling the long-term release/retention of radionuclides in nuclear waste disposal and providing tools to apply the result to Performance Assessment/Safety Case.

Ion implantation technologies for the optimization of the relaxation time of the charge carries of InGaAs quantum wells

Year: 2015.06.23-2015.09.30

Client: UAB „ Ekspla”

The passive mode-locking with the nonlinear Kerr effect in an optical fiber when the intensity-dependent change of the polarization state combined with the intra-cavity polarizer acts as an artificial saturable absorber usually is used to achieve generation of ultrashort laser pulses. The reliable self-starting mode-locking can be achieved by introducing a Semiconductor Saturable Absorber Mirrors (SESAM). For operational wavelength of the Yb-doped fiber lasers, a SESAM based on the InxGa1-xAs/GaAs super-lattice saturable absorber and AlAs/GaAs Bragg mirror is a common choice, but its long term reliability is still an unsolved problem. It is possible to control operational parameters (recovery time, saturation fluence, modulation depth, absorption wavelength) of a SESAM by controlling the growth parameters of the semiconductor material and properly choosing the cavity design. Typical carrier recombination time for a bulk semiconductor material is usually up to ns, but for a stable modelocking of a fiber laser it should be reduced down to a few ps. It this work it was done by the H, O, As ions implantation at various energy into InxGa1-xAs quantum well region after the growing process of the complete structure. The influence of the type and energy of the ions on the main parameters dynamics of SESAM structures were revealed and advices for more stable and more effective energy-saving structures production were proposed.

Implantation and analysis of semiconductors structures by high energy ions

Year: 2012.12.17-2013.01.17

Client: UAB "Teravil"

Local injection of high energy ions to semiconductors structures at various flows leads to introduction of considerable amount of impurities at high velocity that could imply formation of new material not in thermodynamic equilibrium bypassing normal chemical solubility rules. That provides a possibility to achieve defects just in desired place of the sample and at levels, which are inaccessible by conventional treatment. Therefore, implantation process might be performed to tune properties (e.g., carrier lifetime, breakdown voltages, etc.) of complex semiconductor structures or devices locally and at desired depth after their synthesis is finished.

The aim of the work was to tune some particular parameters (carrier life time etc.) of manufactured complex GaAs structure to desired values , i.e. to perform device parameters tuning after the last stage of its production using specific high energy ions implantation to the exact place inside the GaAs structure. To reach this goal, computer simulation of this GaAs structure were implemented to obtain preliminary parameters for ion implantation. Subsequently, ion implantation was performed and GaAs structures properties were modified. After high energy ions implantation wanted parameters of the complete GaAs device were reached and its proper functionality was demonstrated during final test.

Implantation and analysis of semiconductors structures by high energy ions

Year: 2017.07.20-2017.08.21

Client: UAB "Teravil"