scholarly journals Geological Disposal of Nuclear Waste: Fate and Transport of Radioactive Materials

10.5772/50391 ◽  
2012 ◽  
Author(s):  
Prabhakar Sharma
Keyword(s):  
Nuclear Waste ◽  
Fate And Transport ◽  
Radioactive Materials ◽  
Geological Disposal

scholarly journals Mission Impossible? Socio-Technical Integration of Nuclear Waste Geological Disposal Systems

2018 ◽  
Vol 10 (12) ◽  
pp. 4390 ◽  
Author(s):  
François Diaz-Maurin ◽  
Rodney Ewing
Keyword(s):  
Nuclear Waste ◽  
Nuclear Power ◽  
Power Plants ◽  
Spent Nuclear Fuel ◽  
Systems Approach ◽  
High Level Waste ◽  
Integrated Analysis ◽  
Fissile Material ◽  
Radioactive Materials ◽  
Geological Disposal

We present a new perspective on geological disposal systems for nuclear waste. Geological disposal systems encompass all the processes required for the permanent isolation of highly-radioactive materials from humans and the biosphere. Radioactive materials requiring geological disposal are created by commercial nuclear power plants, research reactors, and defense-related nuclear activities, such as spent nuclear fuel from commercial reactors and high-level waste from reprocessing to reclaim fissile material for weapons. We show that disposal systems are so complex that new methods of representation are required. Despite the common call for a systems approach, a broader perspective is needed to obtain an integrated view of disposal systems. We introduce a conceptual formalism of geological disposal systems based on a multi-scale integrated analysis approach. This ‘metabolic’ representation allows one to account for the technical complexity of disposal systems in relation to their broader societal context. Although the paper is conceptual, the integrated formalism can improve the understanding of the complexity of disposal systems and their policy requirements by connecting technical solutions with societal constraints. However, the paper also reveals the limits to efforts to integrate technical and social dimensions of geological disposal systems into a single formalism.

Noncontact Displacement Measurement of Nuclear Waste Canisters in a Geological Disposal by Using an Electromagnetic-Wave Approach

2020 ◽  
Vol 6 (4) ◽  
Author(s):  
Mauro Cappelli ◽  
Vincenzo Surrenti
Keyword(s):  
Nuclear Waste ◽  
Preliminary Investigation ◽  
Displacement Measurement ◽  
Alternative Methods ◽  
Nuclear Waste Repository ◽  
Geological Disposal ◽  
Engineered Barriers ◽  
New Sensors ◽  
High Degree ◽  
Straightforward Approach

Abstract The aim of this work is to show a preliminary investigation of possible noncontact techniques for displacement measurement of radioactive waste in a geological disposal. Since a nuclear waste repository can be considered as a harsh environment, the possibility to study alternative methods for measurement, for example, not using cables or buses for detecting relevant data, should be considered as a priority. A straightforward approach could be the substitution of cables with wireless sensors. But if cables cannot be used and the use of wireless techniques is required, new sensors must assure a reliable transmission without affecting the engineered barriers performance and the reliable use of energy supply for the measuring equipment over long periods. This work shows the results of a study of feasibility on using an electromagnetic (EM) approach for the contactless displacement measurement of a canister immersed and suspended in bentonite, a material with a high degree of water retention.

The Fate of Hazardous Materials in the Biosphere

2006 ◽  
Author(s):  
Gary M. Sandquist
Keyword(s):  
Energy Source ◽  
Nuclear Waste ◽  
Nuclear Power ◽  
Fuel Cycle ◽  
Hazardous Materials ◽  
Nuclear Fuel Cycle ◽  
Hazardous Wastes ◽  
Radioactive Materials ◽  
Great Capacity ◽  
Stable Elements

Although nuclear power appears to be expanding as a major global energy source, the disposal of radioactive waste from the nuclear fuel cycle still poses formidable challenges to the full expansion of the nuclear enterprise. The perception that nuclear wastes represent unique and insoluble threats to humans is ill founded. The risk from these radioactive materials is comparable and many ways less severe than other more familiar hazardous materials that are ubiquitous in the biosphere. Radioactive materials decay and reduce in time unlike stable elements. Besides the reduction of radioactive materials through decay, the dilution and dispersion of all hazardous materials by natural forces and events provides the reduction required to make adequate and safe disposal of nuclear waste possible. The ultimate sink for essentially all of these hazardous wastes will prove to be the oceans with their great capacity of dilution and containment.

scholarly journals Geological Disposal of Nuclear Waste: a Primer

Elements ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 233-237 ◽  
Author(s):  
Rodney C. Ewing ◽  
Robert A. Whittleston ◽  
Bruce W.D. Yardley
Keyword(s):  
Nuclear Waste ◽  
Geological Disposal

scholarly journals Rock alteration in alkaline cement waters over 15 years and its relevance to the geological disposal of nuclear waste

2014 ◽  
Vol 50 ◽  
pp. 91-105 ◽  
Author(s):  
Elizabeth B.A. Moyce ◽  
Christopher Rochelle ◽  
Katherine Morris ◽  
Antoni E. Milodowski ◽  
Xiaohui Chen ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Geological Disposal ◽  
Rock Alteration
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