Multibarrier system preventing migration of radionuclides from radioactive waste repository

• Autorzy: Olszewska W. , Miśkiewicz A. , Zakrzewska-Kołtuniewicz G. , Lankof L. , Pająk L.

Identyfikatory

DOI

10.1515/nuka-2015-0103

• Konferencja: International Conference on Development and Applications of Nuclear Technologies NUTECH 2014 (21-24.09.2014, Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

Safety of radioactive waste repositories operation is associated with a multibarrier system designed and constructed to isolate and contain the waste from the biosphere. Each of radioactive waste repositories is equipped with system of barriers, which reduces the possibility of release of radionuclides from the storage site. Safety systems may differ from each other depending on the type of repository. They consist of the natural geological barrier provided by host rocks of the repository and its surroundings, and an engineered barrier system (EBS). The EBS may itself comprise a variety of sub-systems or components, such as waste forms, canisters, buffers, backfi lls, seals and plugs. The EBS plays a major role in providing the required disposal system performance. It is assumed that the metal canisters and system of barriers adequately isolate waste from the biosphere. The evaluation of the multibarrier system is carried out after detailed tests to determine its parameters, and after analysis including mathematical modeling of migration of contaminants. To provide an assurance of safety of radioactive waste repository multibarrier system, detailed long term safety assessments are developed. Usually they comprise modeling of EBS stability, corrosion rate and radionuclide migration in near fi eld in geosphere and biosphere. The principal goal of radionuclide migration modeling is assessment of the radionuclides release paths and rate from the repository, radionuclides concentration in geosphere in time and human exposure to ionizing radiation.

Słowa kluczowe

EN

engineered barrier; migration; radionuclides; repository; radioactive waste

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 3, part 2
• Strony: 557--563
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Olszewska W.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Miśkiewicz A.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Zakrzewska-Kołtuniewicz G.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Lankof L.

• The Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, 7 Wybickiego Str., 31-261 Krakow, Poland

autor

Pająk L.

• The Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, 7 Wybickiego Str., 31-261 Krakow, Poland

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