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Detectors Based on Cherenkov Effect for NPP Safety

#G-982


Investigation and Development of Effective Means of Increase of Nuclear and Radiation Safety of Nuclear Plants

Tech Area / Field

  • FIR-ENG/Reactor Engineering and NPP/Fission Reactors
  • FIR-NSS/Nuclear Safety and Safeguarding/Fission Reactors

Status
8 Project completed

Registration date
10.02.2003

Completion date
06.05.2009

Senior Project Manager
Lapidus O V

Leading Institute
Tbilisi State University / High Energy Physics Institute, Georgia, Tbilisi

Collaborators

  • Technische Universität München / Forschungs-Neutronenquelle, Germany, Garching\nGroup of Particle Physics, Laboratory R.-J.A.Levesque, Canada, QC, Montreal\nUniversity of Tennessee / College of Arts and Sciences, USA, TN, Knoxville

Project summary

The goal of the project is to investigate, develop and create effective and highly sensitive devices for registration of nuclear radiation, based on Cherenkov radiation and fibre-optic light guides.

Creation of such devices will enable to use them to:

· Define to high precision the residual heat of nuclear plants starting with the moment of installation and during any prolonged period. This will make it possible to define more exactly the empirical dependence of residual heat change and establish a secure regulation of chilling;

· Define to high precision the quantity and time of unloading of the used fuel rod arrays (FRA) and fuel (fissile material) burnout in FRAs and create a device for supervision of radiation in most dangerous technological parts of the nuclear setup;

· Investigate a radiation pollution (with g-sources) in out-of-the-way places (deep waters, mines, open-cast mines, etc.);

· Establish a monitoring system of radiation pollution of the environment in sites of risky nuclear and radiation installations.

Besides, it should be noted that such detecting devices will help to evaluate the contribution of delayed neutrons in the time dependence behaviour of heat evolution of nuclear reactors and; define the heterogeneity in different parts of the active zone (according to height and radius), as well as investigate the character of power rise of nuclear reactors after the set level of neutron flow is achieved.

The project envisages both computation and experimental works. It is planed to improve methods of registration of Cherenkov radiation and choose best optically transparent mediums and fibre-optic light guides to achieve the most effective ways of g-emanation detection. Single specimens of registration systems will be created in accordance with the goals of the project. Their efficiency will be defined and documents for recommendation prepared. The documents on conducted investigations and research works will be submitted to leading nuclear centres of the world. The results of the investigation will be discussed at working meetings with participation of collaborators, as well as will be published and submitted in order to take out a patent.

The work performed in the framework of the project will be promoted the increase of nuclear and radiation safety of nuclear fuel cycles and improvement of the International Atomic Energy Agency (IAEA) environmental protection guarantees.

Basis for the successful implementation of the project are the works of the authors made previously in the fields of physics and technologies of nuclear reactors and detection of elementary particles.


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