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Title: Advanced sodium fast reactor accident source terms :

Abstract

An expert opinion elicitation has been used to evaluate phenomena that could affect releases of radionuclides during accidents at sodium-cooled fast reactors. The intent was to identify research needed to develop a mechanistic model of radionuclide release for licensing and risk assessment purposes. Experts from the USA, France, the European Union, and Japan identified phenomena that could affect the release of radionuclides under hypothesized accident conditions. They qualitatively evaluated the importance of these phenomena and the need for additional experimental research. The experts identified seven phenomena that are of high importance and have a high need for additional experimental research: High temperature release of radionuclides from fuel during an energetic event Energetic interactions between molten reactor fuel and sodium coolant and associated transfer of radionuclides from the fuel to the coolant Entrainment of fuel and sodium bond material during the depressurization of a fuel rod with breached cladding Rates of radionuclide leaching from fuel by liquid sodium Surface enrichment of sodium pools by dissolved and suspended radionuclides Thermal decomposition of sodium iodide in the containment atmosphere Reactions of iodine species in the containment to form volatile organic iodides. Other issues of high importance were identified that might merit further researchmore » as development of the mechanistic model of radionuclide release progressed.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1097212
Report Number(s):
SAND2010-5506
463562
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Powers, Dana Auburn, Clement, Bernard, Denning, Richard, Ohno, Shuji, and Zeyen, Roland. Advanced sodium fast reactor accident source terms :. United States: N. p., 2010. Web. doi:10.2172/1097212.
Powers, Dana Auburn, Clement, Bernard, Denning, Richard, Ohno, Shuji, & Zeyen, Roland. Advanced sodium fast reactor accident source terms :. United States. https://doi.org/10.2172/1097212
Powers, Dana Auburn, Clement, Bernard, Denning, Richard, Ohno, Shuji, and Zeyen, Roland. 2010. "Advanced sodium fast reactor accident source terms :". United States. https://doi.org/10.2172/1097212. https://www.osti.gov/servlets/purl/1097212.
@article{osti_1097212,
title = {Advanced sodium fast reactor accident source terms :},
author = {Powers, Dana Auburn and Clement, Bernard and Denning, Richard and Ohno, Shuji and Zeyen, Roland},
abstractNote = {An expert opinion elicitation has been used to evaluate phenomena that could affect releases of radionuclides during accidents at sodium-cooled fast reactors. The intent was to identify research needed to develop a mechanistic model of radionuclide release for licensing and risk assessment purposes. Experts from the USA, France, the European Union, and Japan identified phenomena that could affect the release of radionuclides under hypothesized accident conditions. They qualitatively evaluated the importance of these phenomena and the need for additional experimental research. The experts identified seven phenomena that are of high importance and have a high need for additional experimental research: High temperature release of radionuclides from fuel during an energetic event Energetic interactions between molten reactor fuel and sodium coolant and associated transfer of radionuclides from the fuel to the coolant Entrainment of fuel and sodium bond material during the depressurization of a fuel rod with breached cladding Rates of radionuclide leaching from fuel by liquid sodium Surface enrichment of sodium pools by dissolved and suspended radionuclides Thermal decomposition of sodium iodide in the containment atmosphere Reactions of iodine species in the containment to form volatile organic iodides. Other issues of high importance were identified that might merit further research as development of the mechanistic model of radionuclide release progressed.},
doi = {10.2172/1097212},
url = {https://www.osti.gov/biblio/1097212}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 2010},
month = {Wed Sep 01 00:00:00 EDT 2010}
}