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Our Structure

The development of INT-RP Laboratories started in 1960 around the Research Reactor. The INT-RP was established as an independent Institute in 1986. It is organized in the following eight laboratories:

Environmental Radioactivity Laboratory (ERL)
Environmental REsearch Laboratory (EREL)
Health Physics & Environmental Health Laboratory (HPEHL)
Plasma Physics Laboratory (PPL)
Research Reactor Laboratory (RRL)
Solar and other Energy Systems Laboratory (SESL)
Systems Reliability and Industrial Safety Laboratory (SRISL)
THErmal hydraulics & Multiphase flows LABoratory (THEMLAB)

The Institute laboratories provide a large number of advanced technological services, in addition to their research activities in their respective fields based, to a large degree, on funding by European and National Competitive Programs and International Organizations. In fact in the period of 2003-2005 the Institute earned 6016 k€ from competitive research activities and 1579 k€ from advanced technology services, i.e., circa 54% of its total budget for this period. The annual number of publications in peer reviewed scientific journals and in proceedings of international conferences is 120, on the average over the same period, which corresponds to 3.3 publications per scientist.

The organizational chart of the Institute is available in PDF format.
A brief description of the Institute’s Laboratories follows.

Environmental Radioactivity Laboratory (ERL)
Head: Dr. Kritidis Panagiotis , Physicist (PhD), Researcher A'

kritidis(at) (+30) 2106503228 (+30) 2106503050 (Lab's Home Page)

ERL is one of the oldest laboratories of NCSR ‘Demokritos’ – it operates since 1958. The initial environmental control duties were gradually widened in qualitative and quantitative sense, while new services and research activities have been added as well.
Today ERL provides the following services:
  • Environmental radioactivity control, operating continuously on national scale, by use of a 40-stations sampling and measuring network, covering the Greek territory.

  • Certification of radioactivity in food and other products, imported and exported.

  • Radiological and other pollution studies, such as those involving atmospheric aerosol, conducted upon the request of governmental and non-governmental organizations, the industry and individuals.

  • Evaluation of environmental studies in terms of human and non-human protection based on regular and ad hoc set safety standards

The basic areas of research in ERL are as follows:
  • Enhanced natural radioactivity (including indoor radon).

  • Wide-scale radioactive contamination (early and late impact of the Chernobyl accident).

  • Radioactivity and tracers on marine and freshwater ecosystems and radioecology.

  • Impact assessment and bioindicators.

  • Physicochemical properties of Atmospheric Aerosol and applications in indoor, urban and regional air quality and climate forcing research

  • Development of new instrumentation and methodology for aerosol studies, Including source apportionment and receptor modeling.

Environmental REsearch Laboratory (EREL)
Head: Dr. Stubos Athanasios, Chemical Engineer (PhD), Researcher A'

stubos(at) (+30) 2106503447 (+30) 2106525004 (Lab's Home Page)

The Environmental Research Laboratory (EREL) is part of the Institute of Nuclear Technology-Radiation Protection of the National Centre for Scientific Research “Demokritos” (NCSRD). EREL with its over 20-years experience and its highly specialised scientific staff is one of the leading environmental research laboratories in the country with strong scientific links to many Research and Academic Organizations worldwide. The general aim of EREL is the production of scientific know-how and innovative tools for research and provision of services in the fields of environment and energy. The Laboratory is equipped with modern facilities for the measurement of air pollution and powerful computing equipment and provides high-level services in a wide range of issues related to environment and energy (air quality and environmental impact assessment, nanoporous materials characterization, gas storage). The Laboratory has been awarded ISO 9001 for software development in atmospheric applications while accreditation according to EN 17025 for specific gas pollutant measurements is underway (particulate matter, volatile organics, etc). EREL carries out several research projects with substantial external funding (mainly from EC), in several of which acts currently as coordinator of European consortia of universities, research institutions and industries. In the framework of these activities, EREL has developed a broad range of cooperation with Public and Private Organisations both within and outside Greece, while actively participating in international scientific networks (e.g. ENERO, ERCOFTAC, MESAEP).

Health Physics & Environmental Health Laboratory (HPEHL)
Head: Dr. Gabriel E. Pantelias, Physicist (PhD), Researcher A'

gabriel(at) (+30) 2106503865 (+30) 2106534710

Since the early days of its foundation in 1960, the Health Physics & Environmental Health Laboratory of the Institute of Nuclear Technology & Radiation Protection gives proper and continuous recognition to problems related to all potential radiation induced health hazards. Specifically, the Laboratory provides operational health physics services related to the Radiation Protection Program in NCSR “Demokritos” and the evaluation of radiation overexposures and radiation accidents in general, by means of biological dosimetry methods. The research activities involve the use of radiation and cancer cytogenetics, molecular genetics and radioisotope methodologies to study questions of basic and applied research in radiation protection, radiobiology, cancer genetics and radioactive waste management. In addition, the Laboratory, based on its expertise in radiation protection, radiation biology and cancer cytogenetics, offers specialized services for the calibration of radiation survey meters, for the development of individualized protocols for radiotherapy treatment, and for the diagnostic and follow-up cytogenetic evaluation of patients with hematologic neoplasms.

Plasma Physics Laboratory (PPL)
Head: Dr. Nikos Tsois, Physicist, Researcher A'

nit(at) (+30) 2106503802 (+30) 2106545496

Participates to the European Fusion Program with research and development on diagnostics of boundary plasma layer with electrostatic probes.

The Reaseach Reactor Laboratory (RRL)
Deputy Head: Dr. I. E. Stamatelatos, Physicist (MSc, PhD), Researcher A'

ion(at)        (+30) 2106503718 (+30) 2106533431

The Laboratory operates the Greek Nuclear Research Reactor (GRR-1) under the International Atomic Energy Agency and Greek Atomic Energy Commission safeguards. A range of neutron scattering and neutron activation facilities are open to the national and international community. The Laboratory has strong collaborative links with similar European facilities and functions as a regional Centre of Excellence in Neutron Research and Technology. The Laboratory in conjunction with other Laboratories of the Institute maintains and advances know-how on Reactor, Nuclear and Radiation ProtectionTechnologies. The Laboratory has a wide range research activities in Materials Science and Nano-technology, Environmental and Health Sciences.
The radiation facilities of the Reactor are used for carrying out research on advanced materials for the European Fusion Programme and for the new generation nuclear power reactors. The Laboratory trains young scientists and students on reactor physics, nuclear technology and radiation protection, neutron scattering and nuclear analytical techniques. It serves the community by providing support to Government departments, public bodies and hospitals and services to the industry

Solar and other Energy Systems Laboratory (SESL)
Head: Dr. Belessiotis Vassilios, Physicist (PhD), Researcher A'

beles(at) (+30) 2106503815 (+30) 2106544592(Lab's Home Page)

The activities of the laboratory (SESL) in NCSR “Demokritos” started at the end of the 1970s by the late professor A. Delyiannis (of the National Technical University of Athens) and the present director of SESL V. Belessiotis. Since then, through funding by the European Community, the General Secretariat for Research and Technology and other sources, it has developed state-of-the-art infrastructure and methodologies for the characterization of Solar Thermal Collectors and Domestic Hot-Water Systems. Parallel to this, SESL has developed significant research activities, with emphasis today given in the following fields : a) Solar collectors and systems, b) Metrology of energy quantities, c) Thermal distillation – desalination, d) Analysis & design of thermal storage systems, e) Mechanical (and solar-assisted) drying processes & systems These activities contributed significantly to the development of the relevant International Standards and to the growth of the national solar-product manufacturing industry, particularly in regards to its penetration in the European market. SESL has also developed a Quality Assurance System and contributed to the establishment and spread of the concept of Quality at the national level. SESL is accredited according to the ΕLOT EN ISO/IEC 17025 standard, the first Laboratory in the research-academic sector in Greece to be accredited and among the first such at the European level.

Systems Reliability and Industrial Safety Laboratory (SRISL)
Head: Dr. Yannis Papazoglou, Nuclear Engineer (PhD), Researcher A'

yannisp(at) (+30) 2106503742 (+30) 2106540926(Lab's Home Page)

The Laboratory of System Reliability and Industrial Safety performs applied research and technological development in selected areas of Reliability and Safety of Complex Technological Systems.
The Laboratory performs probabilistic safety analysis and risk assessment. Its services concern users of technological systems and they intend to improve safety by prevention and mitigation of the consequences of their severe failures. Consequences may vary from simply financial (installation destruction, loss of certain important services or products) to severe consequences in workers’ health, public health, and environment.
Industrial activities with systems that can be objects of reliability analysis and risk assessment include:
  • Petroleum and chemical industry.

  • Production and distribution of electrical power.

  • Nuclear Installations.

  • Production and distribution of natural gas

  • Transport systems

  • Telecommunications Informatics

  • Air and space industry

  • Critical Infrastructure Systems

Thermal - Hydraulics and Multiphase Flow Laboratory (THEMLAB)
Head: Dr. Housiadas Christos, Mechanical Engineer (PhD), Researcher A'

christos(at) (+30) 2106503745 (+30) 2106548415 (Lab's Home Page)

The “Thermal – Hydraulics and Multiphase Flow Laboratory” (THEMLAB) is the newest of the INT-RP laboratories. It was created recently with the scope of exploiting the longstanding experience of INT-RP in the field of Thermal–Hydraulics and Multiphase Flows and shape them according to the needs and challenges of current R&D applications requiring similar scientific know-how. THEMLAB conducts basic and applied research inter-connecting topics, which apparently look distant, such as nuclear safety, nanotechnology or health sciences. This is achieved by taking advantage of common underlying physics: we are developing quite versatile, common physical methods and tools for the numerical simulation of flows, in particular dispersed multiphase flows. With such “in-silico” investigations we are able to provide scientific knowledge to a broad range of current applications, in fields like nuclear safety, industrial hygiene, environmental health, aerosol medicine.




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