Multibarrier system preventing migration of radionuclides from radioactive waste repository

• Authors: Wioleta Olszewska , Agnieszka Miśkiewicz , Grażyna Zakrzewska-Kołtuniewicz , Leszek Lankof , Leszek Pająk
• Languages of publication: EN

Abstracts

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, backfills, 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 field 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

Keywords

EN

engineered barrier · migration · radionuclides · repository · radioactive waste

• Publisher: De Gruyter Open
• Journal: Nukleonika
• Year: 2015
• Volume: 60
• Issue: 3
• Pages: 557-563

Dates

published

1 - 9 - 2015

accepted

20 - 5 - 2015

received

24 - 9 - 2014

online

25 - 9 - 2015

Contributors

author

Wioleta Olszewska

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

author

Agnieszka Miśkiewicz

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

author

Grażyna Zakrzewska-Kołtuniewicz

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

author

Leszek Lankof

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

author

Leszek Pająk

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

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Identifiers

DOI

10.1515/nuka-2015-0103