On the use of ion beams for the selection of radioactive waste matrices

2005 ◽  
Vol 196 (1-3) ◽  
pp. 63-68 ◽  
Author(s):  
Frédérico Garrido ◽  
Aurélie Gentils ◽  
Lionel Thomé
Keyword(s):  
Radioactive Waste ◽  
Ion Beams ◽  
Selection Of

Selection of Refractory Materials for Electric Furnaces Used for Radioactive Waste Vitrification

2019 ◽  
Vol 59 (6) ◽  
pp. 612-615
Author(s):  
V. A. Sokolov ◽  
M. D. Gasparyan ◽  
M. B. Remizov ◽  
P. V. Kozlov
Keyword(s):  
Radioactive Waste ◽  
Refractory Materials ◽  
Waste Vitrification ◽  
Selection Of

NUMO’s Open Solicitation of Volunteer Municipalities for a Potential Disposal Site

2003 ◽  
Author(s):  
Kazumi Kitayama
Keyword(s):  
Radioactive Waste ◽  
Preliminary Investigation ◽  
Disposal Site ◽  
Nuclear Waste Management ◽  
The Public ◽  
Construction Operation ◽  
High Level ◽  
Year 2000 ◽  
Selection Of

In the year 2000, the Japanese geological disposal program for high-level radioactive waste (HLW) moved from the phase of generic research and development into the phase of implementation. Following legislation entitled the “Specified Radioactive Waste Final Disposal Act” (hereafter “the Act”), the Nuclear Waste Management Organization of Japan (NUMO) was established as the implementing organization in October 2000. The assigned activities of NUMO include repository site selection, developing relevant license applications and construction, operation and closure of the repository. To initiate the first stage, NUMO has chosen an “open solicitation” approach for finding candidate sites in the belief that the support of local communities is essential to the success of this highly public, long-term project extending over more than a century. Based on this concept, NUMO announced the start of open solication for volunteer municipalities for selection of Preliminary Investigation Areas to the public on December 19, 2002. This paper describes NUMO’s open solicitation of volunteer municipalities for a potential disposal site.

The Geochemical Behaviour of Nickel in the Repository Environment

1994 ◽  
Vol 353 ◽  
Author(s):  
David Savage
Keyword(s):  
Solid Solution ◽  
Trace Elements ◽  
Radioactive Waste ◽  
Performance Assessment ◽  
Solid Solutions ◽  
Near Field ◽  
Solubility Data ◽  
Geochemical Behaviour ◽  
Chemical Conditions ◽  
Selection Of

Abstract59Ni may make significant contributions to calculated doses in performance assessment (PA) studies of geological repositories for radioactive waste, due principally to the adoption of relatively high near-field solubilities. Ni concentration values used in PA are typically 1–6 orders of magnitude greater than those measured in natural groundwaters. This difference is a result of the utilisation in PA of solubility data for pure nickeliferous solids, and in some instances, the selection of solids chemically incompatible with the disposal environment. The geochemical behaviour of Ni is reviewed. It is considered highly unlikely that Ni will form discrete pure solids in the repository near-field, so that partition as a trace element into solid solutions should be considered. Henry’s law behaviour of trace elements is discussed and geochemically-realistic Ni solubility values for HLW and L/ILW disposal scenarios calculated. It is concluded that Ni will behave according to the chemical conditions of the disposal environment, which should be reflected in the choice of solubility data for PA. The adoption of solid solution modelling for other elements of interest to PA should be considered.

Sign in / Sign up

Export Citation Format

Share Document