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Nuclear reactor VVR-SM

 
On September 10, 1959, for the first time in Central Asia, the WWR-S research nuclear reactor of the Institute of Nuclear Physics with a capacity of 2 MW reached criticality.
In order to increase the density of neutron fluxes and expand its experimental capabilities in 1971-1978, the core was reconstructed, which made it possible to increase the rated power of the reactor to 10 MW. The reactor used IRT-3M fuel highly enriched in uranium-235 (90%). Reconstruction of the reactor allowed the production of radioisotopes for medicine.
In February 1999, for the first time in the world among Soviet-made reactors, the VVR-SM research reactor switched to using IRT-3M fuel highly enriched in uranium-235 (36%).
From November 2000 to March 2002, the IRT-4M type fuel, developed by the I. Kurchatov Institute of Atomic Energy, was tested in the VVR-SM reactor of the Institute of Nuclear Physics..

Chief Engineer VVR-SM::

Dosimbaev A.A.

Work phone: (998-71)-289-31-34

e-mail: dosimbaev@inp.uz

 



For the first time in the world among Soviet-made reactors, the VVR-SM research reactor in November 2009 switched to the use of low-enriched uranium-235 (19.7%) fuel IRT-4M.

Power, MW 10
The number of fuel lines in the reactor, pcs. 24
The volume of the active zone, l 83,0
Maximum neutron density in the experimental channel::  
Fast (En0.821 MeV), in the core, a neutron /(см2 *sec)
5x1013
thermal, in the reflector, neutron / (cm2 * sec) /(см2 *sec) 1.2x1014
Water temperature at the entrance to the core,оС 45
Water consumption, м3 / hour 1250
The number of experimental channels:  
horizontal 9
heat column 1
vertical, in reflector 25
in the fuel itself 15
The diameters of the experimental channels, mm 26÷45
Regulatory bodies CPS, pcs.  
Compensating Sergeants (COP) 6
Emergency Protection (EP) 3
Automatic Regulator (AR) 1


 

The reactor is used for research in nuclear physics, radiation physics, radiation materials science, activation analysis, mineral irradiation, as well as in the production of radioisotopes for medical and industrial purposes. .

 


This project is co-funded by the European Union


The project “Safety in Operation of the Research Reactor of the Institute of Nuclear Physics (Phase II)” aims to strengthen the safe operation of the research reactor VVR-SM in accordance with new international standards. In 2010-2013 Within the framework of the project of the IAEA and the European Union Technical Cooperation Department TS UZB / 9/005, the control and protection system, instrumentation, which have been used since the commissioning of the reactor (1959), were replaced. The new control and protection system is essential for safe operation of the new low enriched fuel reactor core. As an additional task, it was decided to replace heat exchangers, pipelines and pumps that have been in operation for more than 45 years. As part of the TS UZB / 1/001 project, a technical specification has been developed for replacing pipelines and secondary pumps, beryllium reflectors and process ventilation.