The South African Nuclear Energy Corporation was established as a public company by the Republic of South Africa Nuclear Energy Act in 1999 and is wholly owned by the State. The name is correctly indicated above, although the sequence of letters in the acronym may be taken as suggesting that the name should be the "Nuclear Energy Corporation of South Africa".Necsa replaced the country's Atomic Energy Corporation. Apart from several ancillary functions, the main functions of Necsa are to undertake and promote research and development in the field of nuclear energy and related technologies; to process and store nuclear material and other restricted material; and to co-ordinate with other organisations in matters falling within these spheres. Apart from its main operations at Pelindaba, Necsa also operates the Vaalputs radioactive waste-disposal facility. The Corporation also serves the State's other nuclear institutional obligations. The chief executive officer of Necsa is Mr. Phumzile Tshelane since 1 September 2012.Necsa is organisationally divided into a commercial group, Pelindaba Technology , which conducts business in a variety of products and markets and another group, Pelindaba Nuclear Institute , which is concerned with statutory functions, R&D, support and facility operations. Pelindaba Technology is a portfolio of businesses of which Nuclear Technology Products is a division and serves the international markets for radiation-based technology and products. Also The Uranium Enrichment Corporation of South Africa, Ltd. which operated a facility at Valindaba to produce HEU.Necsa employs some 1.400 people in diverse areas such as physics, engineering, chemistry and electronics. With changes in the country’s positioning on nuclear involvement and South Africa’s re-entry into world markets in 1990, a decision was taken to focus the organisation on commercially driven projects. Today, Necsa supplies a wide range of innovative hi-technology products and services to South African and foreign market sectors with the SAFARI-1 reactor as the cornerstone of the commercial isotope production programme. This research reactor at Pelindaba, SAFARI-1, is now the most commercialised nuclear reactor in the world with ISO 9000 accreditation and is earning South Africa millions of rands' worth of foreign revenue. The 20 MW research reactor SAFARI-1 was initially used for high level nuclear physics research programmes and was commissioned in 1965. In the 1970s and 1980s the focus of activities at Pelindaba was on the exploitation of South Africa’s uranium resources through the successful design, construction and commissioning of commercial uranium hexafluoride, uranium enrichment, and nuclear fuel assembly production facilities. Wikipedia.
Agency: Cordis | Branch: FP7 | Program: CP | Phase: Fission-2007-6.0.01;Fission-2007-1.1-01 | Award Amount: 12.29M | Year: 2008
Gas-Cooled Reactors (GCR), RBMK and some Material Test Reactors (MTR) make use of graphite as moderator of the fuel, structures of the core and/or thermal columns. During operation, the graphite and other carbonaceous materials like carbon brick, pyrocarbon and silicon carbide coatings are contaminated by fission products and neutron activation. These irradiated carbonaceous wastes are problematic due to their content of long-lived radioisotopes (e.g. Carbon14, Chlorine 36) and due to their large volumes. About 250000 t of i-carbon are existing, worldwide. Acceptable solutions have not yet been established to handle this kind of waste. This fact also represents a significant drawback for the market introduction of graphite-moderated reactors like Very/High-Temperature Reactors (V/HTR) as a promising Generation IV system candidate. Graphite moderated reactors represent the very first generation of nuclear reactors and therefore need to be decommissioned ahead of other reactor types which evolved later. Presently, accelerated decommissioning of GCR and RBMK and subsequent disposal of i-graphite is the preferred option for not leaving this waste as a legacy for future generations. The CARBOWASTE project aims at an integrated waste management approach for this kind of radioactive wastes which are mainly characterized as Intermediate Level Waste (ILW), due to the varying content of long-lived radioisotopes. Methodologies and databases will be developed for assessing different technology options like direct disposal in adopted waste containers, treatment & purification before disposal or even recycling i-carbonaceous material for reuse in the nuclear field. The feasibility of the associated processes will be experimentally investigated to deliver data for modeling the microstructure and localization of contaminants. This is of high importance to better understand the origin of the contamination and the release mechanisms during treatment and/or disposal.
South African Nuclear Energy Corporation and North West University South Africa | Date: 2014-11-04
This invention relates to a pharmaceutical composition for parenteral or oral administration containing a radioactive compound which can be used diagnostically or therapeutically. The composition comprises a micro-emulsion constituted by a dispersion of vesicles or microsponges of a fatty acid based component in an aqueous or other pharmacologically acceptable carrier in which nitrous oxide is dissolved, the fatty acid based component comprising at least one long chain fatty acid based substance selected from the group consisting of free fatty acids and derivatives of free fatty acids, and the radioactive compound.
van Heerden F.A.,South African Nuclear Energy Corporation
Transport Theory and Statistical Physics | Year: 2012
This article introduces a novel coarse-grained particle transport solver, designed specifically for streaming processor architectures. The coarse particles are transported using a Monte Carlo algorithm with a locally homogenized collision operator. Local errors introduced by the homogenization procedure and the use of (deterministic) quadratures, are described and analyzed. A brief description of how the simulation is mapped to the streaming processor (Graphics Processing Unit) is also given. © 2012 Copyright Taylor and Francis Group, LLC.
Adam R.M.,South African Nuclear Energy Corporation |
Sofianos S.A.,University of South Africa
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2010
We use the assumption that the potential for the A-boson system can be written as a sum of pairwise acting forces to decompose the wave function into Faddeev components that fulfill a Faddeev type equation. Expanding these components in terms of potential harmonic (PH) polynomials and projecting on the potential basis for a specific pair of particles results in a two-variable integro-differential equations suitable for A-boson bound-state studies. The solution of the equation requires the evaluation of Jacobi polynomials PKα,β(x) and of the weight function W(z) which give severe numerical problems for very large A. However, using appropriate limits for A→? we obtain a variant equation which depends only on the input two-body interaction, and the kernel in the integral part has a simple analytic form. This equation can be readily applied to a variety of bosonic systems such as microclusters of noble gasses. We employ it to obtain results for A(10-100) Rb87 atoms interacting via interatomic interactions and confined by an externally applied trapping potential Vtrap(r). Our results are in excellent agreement with those previously obtained using the potential harmonic expansion method (PHEM) and the diffusion Monte Carlo (DMC) method. © 2010 The American Physical Society.
South African Nuclear Energy Corporation | Date: 2011-03-10
The invention relates to a method of producing radionuclides. According to the method, a target medium comprising at least a target nuclide material is irradiated in an irradiation zone with neutron irradiation. Radionuclides form in the target nuclide material as a result of the irradiation, and at least some of the formed radionuclides are ejected from the target nuclide material. The ejected radionuclides are then captured and collected in a carbon-based recoil capture material which does not have an empty cage structure at crystallographic level.
South African Nuclear Energy Corporation | Date: 2012-10-11
A process for treating a zirconium containing feedstock includes fluorinating a feedstock comprising dissociated zircon (DZ) to obtain a zirconium fluorine compound and a silicon fluorine compound. The zirconium fluorine compound is separated from the silicon fluorine compound is provided. Optionally, the zirconium fluorine compound is reacted with a non-fluorine halogen, an alkali metal non-fluorine halide or an alkaline-earth metal non-fluorine halide, thereby to obtain a zirconium non-fluorine halide. The zirconium fluorine compound or, when present, the zirconium non-fluorine halide is subjected to plasma reduction, in a plasma reduction stage, in the presence of a reductant, to obtain metallic zirconium.
University of Johannesburg and South African Nuclear Energy Corporation | Date: 2012-07-02
The invention relates to a method for preparing a bisphosphonate covalently bonded to a nanostructure. This invention also relates to a bisphosphonate having incorporated therein a radioisotope selected from ^(32)p or ^(33)P, preferably ^(33p), wherein the bisphosphonate is covalently bonded to a nanostructure directly or by way of a linker, and to the use thereof in a method of treating calcific tumours in a patient.
South African Nuclear Energy Corporation | Date: 2014-03-31
A process for producing a hexafluorophosphate salt comprises neutralizing hexafluorophosphoric acid with an organic Lewis base, to obtain an organic hexafluorophosphate salt. The organic hexafluorophosphate salt is reacted with an alkali hydroxide selected from an alkali metal hydroxide (other than LiOH) and an alkaline earth metal hydroxide, in a non-aqueous suspension medium, to obtain an alkali hexafluorophosphate salt as a precipitate. A liquid phase comprising the non-aqueous suspension medium, any unreacted organic Lewis base and any water that has formed during the reaction to form the precipitate, is removed. Thereby, the alkali hexafluorophosphate salt is recovered.
Agency: Cordis | Branch: FP7 | Program: CSA-CA | Phase: Fission-2008-6.0.4 | Award Amount: 406.17K | Year: 2009
Research and technology development in the area of nuclear fission and radiation protection under the Euratom programme is booming. However, there is a clear need for better coordination of research activities at a European and global level in order to further stimulate innovation and improve the EUs competitiveness worldwide. Hence, a well-organised and proficient network of National Contact Points for the Euratom programme is essential to improve this coordination. Project NUCL-EU is a 51months project and has the overall objective to create an efficient, pro-active and sustainable network for stimulating closer cooperation among all the National Contact Points and Third Countries contacts for the Euratom Programme. NUCL-EU has two clear specific objectives: the reinforcement of the Euratom NCP network and the enhancement of Third Countries participation. Principal activities include good practice benchmarking with Euratom NCPs, followed by tailor-made training sessions and twinning schemes for new and less experienced NCPs. Third Countries contacts will be encouraged to participate in all NUCL-EU activities. Participation of research organisations especially from Third Countries in Euratom will be boosted through a large Brokerage Event. The expected impacts of NUCL-EU will be 1) a strong and uniform Euratom NCP network, involving sound communication with Third Countries, and 2) more effective participation of Third Countries to the Euratom programme. Moreover, good practices of this network will be publicly available as a handbook for NCPs in other FP7 themes. The coordinator (APRE) will invite all Euratom NCPs, including those outside the consortium, to the project activities. The currently only Third Country NCP (South Africa) is part of project consortium.
South African Nuclear Energy Corporation | Date: 2015-02-06
The present invention relates to a stabilized kit for the preparation of a radiopharmaceutical. In particular, the present invention relates to the use of a non-aqueous solvent for the stabilisation of the ligand component of the kit.