Nuclear Research Reactor


The Nuclear Research Reactor at the National Centre for Scientific Research “Demokritos” is a 5 MW open-pool type nuclear reactor using water as cooling medium and neutron moderator.

More information on the history, current status of the facility and related activities can be found on the page of the Nuclear Research Reactor Lab.



General Data

Owner National Centre for Scientific Research “Demokritos”
Operator Institute of Nuclear and Radiological Sciences, Technology, Energy & Safety
Address Agia Paraskevi, 15310, Attiki, Greece
Latitude 37.99
Longitude 23.81
Licensing Greek Atomic Energy Commission
Construction Date 1959-08-01
Criticality Date 1961-07-27
Safeguards EURATOM, IAEA
Total Staff 10
Status Extended Shut-down (since 2004)

Technical Data

Type Pool
Thermal Power 5 MW
Max Flux, Thermal 1.E+14 n/cm2/s
Max Flux Fast 4.E+13 n/cm2/s
Moderator Water
Coolant Water
Natural Convection Cooling <100 kW
Forced Cooling Yes
Reflector Water, Beryllium
Control Rod Material Ag, Cd, In
Control Rods Number 5
Operating Experience 43 years
Category Research

Fuel Data

Fuel Material U3Si2-Al
Enrichment (max) 19.75%
Origin of Fissile Material USA
Fuel Fabricator CERCA
Plates per Element 18
Dimension of Element 878 mm x 76.1 mm x 80 mm
Cladding Material Al Alloy



Isotope production, neutron scattering instruments, neutron activation analysis, material irradiations, tissue sterilization, teaching and training.

Lead Scientist

Nuclear Technology

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