scholarly journals High-level waste canister storage final design, installation, and testing. Topical report

1998 ◽  
Author(s):  
B.J. Connors ◽  
R.A. Meigs ◽  
D.M. Pezzimenti ◽  
P.M. Vlad
Keyword(s):  
High Level Waste ◽  
Final Design ◽  
High Level

A Framework for Assessing the Cost and Financing Uncertainties of the Belgian High Level-Waste Repository

2003 ◽  
Author(s):  
P. L. Kunsch
Keyword(s):  
Fuzzy Logic ◽  
Electric Power Research Institute ◽  
High Level Waste ◽  
Mathematical Technique ◽  
Final Design ◽  
High Level ◽  
The Cost ◽  
Fuzzy Logic Technique ◽  
Hlw Repository ◽  
Natural Way

This paper presents the general approach presently developed by ONDRAF/NIRAS/NERAS, the Belgian radioactive waste management agency for dealing with the economic and financial uncertainties of the High-level-Waste (HLW) repository project in clay. This project will be for many more years the object of R&D studies. Many uncertainties thus still exist regarding the final design, the eventual costs, and the realisation schedule. Recommendations from the Electric Power Research Institute (EPRI) are available for computing contingency factors to be applied on top of the basic costs delivered by project engineers. We show in this paper that fuzzy logic is a natural way to use the recommendations of EPRI. Fuzzy logic is a mathematical technique for representing unprecise or relatively vague judgments made by experts, like: ‘this project is preliminary’, ‘this concept is insufficiently mature’, etc. This approach is considered in many fields as being well-suited for coping with uncertainties implied by such judgments. In the present case, distinction is made between uncertainties related to policy, project, technology, and realisation schedule. The paper details the sequence of basic steps used by the agency to produce as a final product the per-unit tariff of the different waste categories. Expert judgments are interpreted by the fuzzy-logic technique to derive EPRI-like contingency factors for each project task, as well as a fuzzy operating schedule within a given political scenario. Conclusions are given on how this approach can be validated and set into practice.

Effects of Aging on the Solubility of Palladium

1995 ◽  
Vol 412 ◽  
Author(s):  
C. Oda ◽  
H. Yoshikawa ◽  
M. Yui
Keyword(s):  
Aqueous Solution ◽  
Aging Time ◽  
Room Temperature ◽  
High Level Waste ◽  
Anaerobic Conditions ◽  
Dilute Aqueous Solution ◽  
Waste Repository ◽  
Ph Range ◽  
Effects Of Aging ◽  
High Level

AbstractPalladium solubility was measured in a dilute aqueous solution at room temperature in the pH range from 3 to 13 under anaerobic conditions. Crystalline Pd metal was clearly visible and the concentration of palladium in solution decreased gradually with aging time. The palladium concentrations in solution were less than 9.4×10-10M in the pH range from 4 to 10 and increased to 10-7M in the pH range greater than 10. This study suggests that palladium concentrations in certain high-level waste repository environments may be limited by Pd metal and may be less than 10-9M.

Performance assessment of the disposal of vitrified high-level waste in a clay layer

2001 ◽  
Vol 298 (1-2) ◽  
pp. 125-135 ◽  
Author(s):  
Dirk Mallants ◽  
Jan Marivoet ◽  
Xavier Sillen
Keyword(s):  
Performance Assessment ◽  
High Level Waste ◽  
Clay Layer ◽  
High Level

Use of microwave energy in reprocessing of high-level waste

Atomic Energy ◽  
1992 ◽  
Vol 73 (3) ◽  
pp. 730-734 ◽  
Author(s):  
A. A. Kurkumeli ◽  
M. I. Molokhov ◽  
O. D. Sadkovskaya ◽  
V. I. Kononov ◽  
G. B. Borisov ◽  
...  
Keyword(s):  
Microwave Energy ◽  
High Level Waste ◽  
High Level

Recovery of actinides extracted by Truex solvent from high level waste using complexing agents

1999 ◽  
Vol 240 (3) ◽  
pp. 727-730 ◽  
Author(s):  
R. R. Chitnis ◽  
P. K. Wattal ◽  
A. Ramanujam ◽  
P. S. Dhami ◽  
V. gopalakrishnan ◽  
...  
Keyword(s):  
High Level Waste ◽  
Complexing Agents ◽  
High Level
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