The Enthalpies of Solution of Lanthanide Metals in Hydrochloric Acid at Various Concentrations. Relevance to Nuclear Waste Long Term Storage

1998 ◽  
Vol 82 (s1) ◽  
Author(s):  
L. Merli ◽  
F. Rorif ◽  
J. Fuger
Keyword(s):  
Hydrochloric Acid ◽  
Nuclear Waste ◽  
Enthalpies Of Solution ◽  
Long Term Storage ◽  
Lanthanide Metals ◽  
Term Storage

Comparison of Granite, Tuff, and Basalt as Geologic Media for Long-Term Storage of High-Level Nuclear Waste

1990 ◽  
Vol 212 ◽  
Author(s):  
D. E. Grandstaff ◽  
V. J. Grassi ◽  
A. C. Lee ◽  
G. C. Ulmer
Keyword(s):  
Nuclear Waste ◽  
Nuclear Waste Repository ◽  
Long Term Storage ◽  
Hydrothermal Experiments ◽  
Ion Activity ◽  
Activity Ratios ◽  
High Level Nuclear Waste ◽  
High Level ◽  
Term Storage

ABSTRACTSystematic differences in pH, cation/proton ion activity ratios, and redox have been observed between solutions produced in rock-water hydrothermal experiments with tuff, granite, and basalt. Stable pH values in tuff-water experiments may be as much as 1.5 pH units more acidic than basalt-water experiments at the same temperature and ionic strength. Redox (log fO2) values in 300°C tuff experiments are 4–7 orders of magnitude more oxidizing than basalt experiments and ca. 4 log units more oxidizing than the magnetite-hematite buffer. Such fluid differences could significantly affect the performance of a high-level nuclear waste repository and should be considered in repository design and siting.

Nuclear Waste: Socioeconomic Dimensions of Long-Term Storage

1984 ◽  
Vol 25 (4) ◽  
pp. 891
Author(s):  
Gary L. Downey ◽  
Steve H. Murdock ◽  
F. Larry Leistritz ◽  
Rita R. Hamm
Keyword(s):  
Nuclear Waste ◽  
Long Term Storage ◽  
Term Storage

Investigation on polyetheretherketone composite for long term storage of nuclear waste

2015 ◽  
Vol 467 ◽  
pp. 855-862 ◽  
Author(s):  
G. Ajeesh ◽  
Shantanu Bhowmik ◽  
Venugopal Sivakumar ◽  
Lalit Varshney ◽  
Virendra Kumar ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Long Term Storage ◽  
Term Storage

Prediction of Long Term Corrosion Behaviour in Nuclear Waste Systems

2006 ◽  
Vol 932 ◽  
Author(s):  
Damien Féron ◽  
Digby D. Macdonald
Keyword(s):  
Nuclear Waste ◽  
Corrosion Behaviour ◽  
Lessons Learned ◽  
Long Term Storage ◽  
Experimental Approaches ◽  
High Level Nuclear Waste ◽  
High Level ◽  
Interim Storage ◽  
Term Storage

ABSTRACTThe corrosion resistance of container materials in underground repositories is an important issue for the safe disposal of High Level Nuclear Waste (HLNW). The reliable prediction of container degradation rate and engineering barrier integrity over extended periods, up to several thousands years or even several hundreds of thousands of years, represents one of the greatest scientific and technical challenges. The first and the second International Workshops on Prediction of Long Term Corrosion Behaviour in Nuclear Waste Systems, which were held in 2001 (Cadarache) and 2004 (Nice), sought to compare the scientific and experimental approaches that are being developed in various organisations worldwide for predicting long term corrosion phenomena, including corrosion strategies for interim storage and geological disposal. The lessons learned during these Workshops, include the necessity of developing two approaches based on semi-empiricism and determinism in a complementary manner for effective prediction. The use of archaeological artefacts to demonstrate the feasibility of long term storage and to provide a database for testing and validating modelling work was also emphasized.

Applications of Electron Microscopy to Containment of Radio-Nuclides

1982 ◽  
Vol 40 ◽  
pp. 606-609
Author(s):  
Carol M. Jantzen
Keyword(s):  
Nuclear Waste ◽  
Fission Products ◽  
Silica Glasses ◽  
Long Term Storage ◽  
Waste Forms ◽  
High Silica ◽  
Solid Form ◽  
Reference Form ◽  
Term Storage

The long radioactive lifetime of the fission products in nuclear wastes requires that the materials be isolated from the biosphere for periods of 103 to 105 years. One method of accomplishing this is to consolidate the waste into a chemically stable solid form and to contain this within a multiple barrier canister which can be transported to a geologically stable repository for long-term storage. A number of candidate solid waste forms are being assessed to determine their suitability for incorporating various nuclear waste compositions and they include borosilicate glass (the current reference form), ceramics, high silica glasses, and cement.

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