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Composites for Nuclear Waste Storage

#G-354


Development of Technology for Producing Multilayer Composite Materials Providing the Storage of Nuclear Power Engineering Waste and Nuclear Fuel (e.g. Plutonium etc.)

Tech Area / Field

  • FIR-MAT/Materials and Materials Conversion/Fission Reactors
  • ENV-WDS/Waste Disposal/Environment

Status
3 Approved without Funding

Registration date
17.05.1999

Leading Institute
G. Tsulukidze Mining Institute, Georgia, Tbilisi

Project summary

The main goal of the Project consists of the working out of the technology for obtaining multilayer composite materials on the base of boron and lead in order to produce containers for nuclear fuel and nuclear waste with high absorbing properties against neutron and - irradiation.

Now existing methods for storing radioactive materials (underground storages, wather storages), are not so effective. At the same time the development of the reactor technology requires to make active containers for storage and frequent displacement of the nuclear fuel and wastes in scientific-technological institutes and enterprises. The everyday contact with radioactive materials and their frequent displacement raise before scientists hard requirements of maximum guarantees for the anti-neutron and -irradiation protection.

In order to solve the above mentioned task and to improve considerably absorbing properties of obtained containers the shock wave compacting technology and boron powders (enriched by 10B up to 85%) were choosen. Application of shock waves by cylindrucal sceme of loading (intensity 5-30 GPa ) with combination of different types of boron powders and supporting materials will alow not only to consolidate high dense boron based composition but also to realise a joining with aluminium and steel-Lead substrates and to obtain cylindrical multilayer pallets.

Boron powders, high density and their uniform distribution upon the whole length of cylindrical pallets are those basical indices which serve as a background for prospectiveness of the goals and their solutions’ methods proposed by the Project.

Hot shock wave compacting and treatment of different boron based powders make favorable conditions for their phase and different structural changes, allow to obtain cylindrical multilayer work peaces of near theoretical density. The Project also deals with the study of this topic. Investigations will result in determination of influence intensity of loading and compacting temperature on the physical-mechanical properties of the obtained compact-layers and their absorbing properties.

The practical result of the Project will consist of the presentation of cylindrical multilayer containers made of composition Al-(B-AL)-Al; Al-B-Steel-Pb-Steel; Al-(B-Zr)-Steel-Pb-Steel with dimentions up to Ж = 200 mm and L = 2000 mm.

The potential role of foreign counterpart consists of introduction of results at verious enterprises.


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The International Science and Technology Center (ISTC) is an intergovernmental organization connecting scientists from Kazakhstan, Armenia, Tajikistan, Kyrgyzstan, and Georgia with their peers and research organizations in the EU, Japan, Republic of Korea, Norway and the United States.

 

ISTC facilitates international science projects and assists the global scientific and business community to source and engage with CIS and Georgian institutes that develop or possess an excellence of scientific know-how.

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