scholarly journals Management of high-level nuclear wastes

1978 ◽  
Author(s):  
A. M. Platt ◽  
J. L. McElroy
Keyword(s):  
Nuclear Wastes ◽  
High Level

The Effects of Carbonate-Bicarbonate Concentration on Empirical Corrosion Diagram of Mild Steel as a Material of Geological Disposal Package for High Level Nuclear Wastes

1996 ◽  
Vol 451 ◽  
Author(s):  
Guen Nakayama ◽  
Yuichi Fukaya ◽  
Masatsune Akashi
Keyword(s):  
Mild Steel ◽  
Human Life ◽  
General Corrosion ◽  
Nuclear Wastes ◽  
Bicarbonate Concentration ◽  
Sulfate Ions ◽  
Geological Disposal ◽  
Groundwater Environment ◽  
High Level ◽  
Corrosion Diagram

ABSTRACTIn the scheme for geological disposal of high level radioactive nuclear wastes, the burial pit is to be isolated from the sphere of human life by a multiple-barrier system, which consists of an artificial barrier, composed of a canister, an overpack and a bentonite cushioning layer, and a natural barrier, which is essentially the bedrock. As the greatest as well as essentially the sole detriment to its integrity would be corrosion by groundwater. The groundwater comes to it seeping through the bentonite zone, thereby attaining conceivably the pH of transition from general corrosion to passivity, pHd, the behaviors of mild steel in such a groundwater environment have been examined. It has been shown that the pHd is lowered (enlargement of the passivity domain) with rising temperature and carbonate-bicarbonate concentration, while it is raised (enlargement of the general corrosion region) with increasing concentrations of chloride and sulfate ions.

The Isolation of High-Level Nuclear Wastes in a Geologic Repository

1982 ◽  
Vol 91 (1) ◽  
pp. 22 ◽  
Author(s):  
Fred A. Donath
Keyword(s):  
Nuclear Wastes ◽  
Geologic Repository ◽  
High Level

scholarly journals Spectroscopic and first-principles calculation studies of the chemical forms of palladium ion in nitric acid solution for development of disposal of high-level radioactive nuclear wastes

AIP Advances ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 045221 ◽  
Author(s):  
Shinta Watanabe ◽  
Toshikazu Sato ◽  
Tomoko Yoshida ◽  
Masato Nakaya ◽  
Masahito Yoshino ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Acid Solution ◽  
Nitric Acid Solution ◽  
First Principles ◽  
First Principles Calculation ◽  
Chemical Forms ◽  
Nuclear Wastes ◽  
High Level ◽  
Palladium Ion

scholarly journals Studies Related to Chemical Mechanisms of Gas Formation in Hanford High- Level Nuclear Wastes

1999 ◽  
Author(s):  
E. Kent Barefield ◽  
Charles L. Liotta ◽  
Henry M. Neumann
Keyword(s):  
Nuclear Wastes ◽  
Chemical Mechanisms ◽  
Gas Formation ◽  
High Level

scholarly journals Development of glass formulations containing high-level nuclear wastes

1978 ◽  
Author(s):  
W.A. Ross
Keyword(s):  
Nuclear Wastes ◽  
High Level

On thermohydrologic conditions near high-level nuclear wastes emplaced in partially saturated fractured tuff: 2. Effective continuum approximation

1990 ◽  
Vol 26 (6) ◽  
pp. 1249-1261 ◽  
Author(s):  
K. Pruess ◽  
J. S. Y. Wang ◽  
Y. W. Tsang
Keyword(s):  
Continuum Approximation ◽  
Nuclear Wastes ◽  
Partially Saturated ◽  
High Level

Rapid Transmutation of High-Level Nuclear Wastes in a Catalyzed Fusion-Driven System

2008 ◽  
Vol 28 (1) ◽  
pp. 107-117 ◽  
Author(s):  
Nesrin Demir ◽  
Gamze Genç ◽  
Taner Altunok ◽  
Hüseyin Yapıcı
Keyword(s):  
Nuclear Wastes ◽  
Driven System ◽  
High Level

Adsorption of actinides within speleothems

2016 ◽  
Vol 80 (5) ◽  
pp. 765-780 ◽  
Author(s):  
P. Sengupta ◽  
J. Sanwal ◽  
N. L. Dudwadkar ◽  
S. C. Tripathi ◽  
P. M. Gandhi
Keyword(s):  
Valence State ◽  
Experimental Studies ◽  
Distribution Coefficients ◽  
Nuclear Wastes ◽  
Lesser Himalayas ◽  
Safety Assessments ◽  
High Level ◽  
Long Term Performance ◽  
Term Performance

AbstractStalagmites and stalactites, as observed within natural caves, may develop inside geological repositories during constructional and post-operational periods. It is therefore important to understand actinide sorption within such materials. Towards this, experimental studies were carried out with 233U, 238Np (VI), 238Np (IV), 239Pu and 241Am radiotracers using natural speleothem samples collected from the Dharamjali cave of the Kumaon Lesser Himalayas, India. Petrological/mineralogical studies showed that natural speleothems have three general domains: (1) columnar calcite; (2) microcrystalline calcite; and (3) botryoidal aragonite – each with ferruginous materials. Results showed that all domains of speleothems can take up >99% actinides, irrespective of valence state and pH (1–6 range) of the solution. However, distribution coefficients were found to be at a maximum in aragonite for most of the actinides. Such data are very important for long-term performance and safety assessments of the deep geological repositories planned for the disposal of high-level nuclear wastes.

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