Decontamination and Decommissioning of the Uranium Mill and Processing Plant at Seelingstaedt, Germany

2007 ◽  
Author(s):  
Ulf Barnekov ◽  
Matthias Bauroth ◽  
Michael Paul
Keyword(s):  
Surface Runoff ◽  
Uranium Mining ◽  
Plant Succession ◽  
Processing Plant ◽  
Yellow Cake ◽  
Industrial Facilities ◽  
Eastern Germany ◽  
Stable Surface ◽  
Plant Site ◽  
Different Types

In Eastern Germany uranium mining lasted from 1946 till 1990 including a production of in total 220,000 t of uranium. The Seelingsta¨dt Uranium Mill and Processing Plant, located in Thuringia, Germany, was one of two large uranium mills owned by Wismut. The mill was erected by 1960 and covered an area of 93 ha. From 1961 till 1991 a total of about 110 million t of different types of uranium ores were milled and processed at the Seelingsta¨dt mill. The mill produced ca. 110,000 t of uranium (in yellow cake). Demolition of the buildings and industrial facilities of the Seelingsta¨dt mill and processing plant site are nearly completed. The site is being decommissioned with respect to after-use aiming at afforestation and grasslands allowing for a stable plant succession. Decommissioning includes excavation and relocation of contaminated materials, reshaping of the site and construction of ditches for granting a stable surface runoff as well construction of access and maintenance roads. About 85% of the demolition and relocation works have been completed till to date. Last decommissioning works shall be completed by 2015. The present paper presents experiences made and progress achieved till to date.

scholarly journals Simulation of the Occurrence of Water Runoff in Soils Under Cultivation of Industrial Tomato Irrigated by Center Pivot

2019 ◽  
Vol 11 (7) ◽  
pp. 48
Author(s):  
Diogo. H. M. Moraes ◽  
José Alves Júnior ◽  
Marcio Mesquita ◽  
Adão. W. P. Evangelista ◽  
Derblai Casaroli ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Irrigation System ◽  
Numerical Technique ◽  
Irrigation Management ◽  
Water Runoff ◽  
Clayey Soils ◽  
Infiltration Capacity ◽  
Tomato Crop ◽  
Center Pivot ◽  
Different Types

The tomato crop is almost totally irrigated. Among the irrigation methods utilized, mechanized sprinkling by center pivot stands out in tomato cultivation. A cultural treatment used in the tomato is the synchronization of the irrigations with the applications of the pesticides since with the leaf wetting the plants become unprotected and susceptible to diseases. In an attempt to reduce pesticide applications, growers seek to increase the time between irrigations, however, there are limitations, inherent to the soil and the irrigation system itself. The objective of this work was to simulate the soil water runoff tendency for irrigation management in the tomato crop, simulating three different types of soils (sandy, medium and clayey), three declines (0, 5 and 10%), and two types of deflectors (I-Wob and Spray). For this, four pivot sizes (25, 50, 75 and 100 ha) were defined and the methodology of maximum allowable precipitation estimated by the Newton-Raphson numerical technique was used to verify the different runoff conditions. The results showed that clayey soils are more susceptible when compared to medium and sandy soils, to surface runoff. Pivots of 100, 75 and 50 ha present greater susceptibility to runoff, with 25 ha being the best suitability for infiltration capacity in both soils. There is a percentage reduction of the maximum allowable rainfall of 40.74 % (±1.54) when the terrain is plan and pass to have 5% inclination and 22.99% (±1.47) between 5 and 10 %. I-Wob type deflectors have a better distribution of application, a consequently better relation with the maximum allowable precipitation intensity and less possibility of the surface runoff.

Using fuzzy TOPSIS method for mineral processing plant site selection

2010 ◽  
Vol 5 (5) ◽  
pp. 1011-1019 ◽  
Author(s):  
Mohsen Safari ◽  
Reza Kakaei ◽  
Mohammad Ataei ◽  
Mohammad Karamoozian
Keyword(s):  
Site Selection ◽  
Fuzzy Topsis ◽  
Mineral Processing ◽  
Processing Plant ◽  
Topsis Method ◽  
Plant Site

The Yellow Cake Revue: Comments in Words and Music on the Threat of Uranium Mining in Orkney; For Voice and Piano

Notes ◽  
1986 ◽  
Vol 42 (3) ◽  
pp. 657
Author(s):  
Robert Osborne ◽  
Peter Maxwell Davies ◽  
Stephen Oliver
Keyword(s):  
Uranium Mining ◽  
Yellow Cake ◽  
Voice And Piano

scholarly journals Methodology for the design and simulation of industrial facilities and production systems based on a modular approach in an "industry 4.0" context

DYNA ◽  
2018 ◽  
Vol 85 (207) ◽  
pp. 243-252
Author(s):  
Luis Omar Alpala ◽  
Maria Del Mar eva Alemany ◽  
DIego Hernán Peluffo ◽  
Fabio Andres Bolaños ◽  
Aura Maria Rosero ◽  
...  
Keyword(s):  
Industry 4.0 ◽  
Collaborative Work ◽  
Integrated Design ◽  
Plant Distribution ◽  
Design System ◽  
Processing Plant ◽  
Modular Approach ◽  
Industrial Installation ◽  
Industrial Facilities

The design of the industrial facilities distribution is one of the most important decisions to be made, as it will condition the operation thereof. The concept of industrial installation as it is known today has evolved to the point that it integrates automation and information systems. Indeed, such evolution has given rise to the so-called intelligent factory. At present, in order to produce customized mass products according to customers' requirements, it is become an important issue the distribution of facilities with the generation of successful layout designs, based on the flexibility, modularity and easy configuration of production systems.This paper proposes a methodology to solve the problem of plant distribution design and redesign based upon a novel modular approach within an industry 4.0 context. Proposed methodology is an adaptation of the "SLP" Methodology (Systematic Layout Planning-Simulation) so-called SLP Modulary 4.0 (systematic planning of the Layout based on a modular vision under a context of Industry 4.0); this methodology incorporates in its structure an integrated design system (IDS) into its structure, which allows collaborative work with different CAD design and simulation tools. For the validation of the proposed methodology, a case study of a coffee processing plant is considered. The distribution design results obtained from the case study prove the benefit and usefulness of the proposed methodology.

Restructuring the Uranium Mining Industry in Romania: Actual Situation and Prospects

2002 ◽  
Author(s):  
P. D. Georgescu ◽  
S. T. Petrescu ◽  
T. F. Iuhas
Keyword(s):  
Nuclear Power ◽  
Mining Industry ◽  
Uranium Mining ◽  
Natural Uranium ◽  
Ore Deposits ◽  
Production Costs ◽  
Processing Plant ◽  
Actual Situation ◽  
National Program ◽  
Eastern Carpathians

Uranium prospecting in Romania has started some 50 years ago, when a bilateral agreement between Romania and the former Soviet Union had been concluded and a joint Romanian-Soviet enterprise was created. The production started in 1952 by the opening of some deposits from western Transylvania (Bihor and Ciudanovita). From 1962 the production has continued only with Romanian participation on the ore deposit Avram Iancu and from 1985 on the deposits from Eastern Carpathians (Crucea and Botusana). Starting with 1978 the extracted ores have been completely processed in the Uranium Ore Processing Plant from Feldioara, Brasov. Complying with the initial stipulations of the Nuclear National Program launched at the beginning of the 1980s, the construction of a nuclear power station in Cernavoda has started in Romania, using natural uranium and heavy water (CANDU type), having five units of 650 MW installed capacity. After 1989 this initial Nuclear National Program was revised and the construction of the first unit (number 1) was finalized and put in operation in 1996. In 2001 the works at the unit number 2 were resumed, having the year 2005 as the scheduled activating date. The future of the other 3 units, being in different construction phases, hasn’t been clearly decided. Taking into consideration the exhaustion degree of some ore deposits and from the prospect of exploiting other ore deposits, the uranium industry will be subject of an ample restructuring process. This process includes workings of modernization of the mines in operation and of the processing plant, increasing the profitableness, lowering of the production costs by closing out and ecological rehabilitation of some areas affected by mining works and even new openings of some uraniferous exploitations. This paper presents the actual situation and the prospects of uranium mining industry on the base of some new technical and economical strategic concepts in accordance with the actual Romanian Program for Nuclear Energetics.

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