Proposal for improved nuclear fuel utilisation and economic performance by utilising thorium

du Toit, Marina; Chirayath, Sunil
May 2015
Journal of Energy in Southern Africa;May2015, Vol. 26 Issue 2, p11
Academic Journal
A systematic and strategic nuclear power reactor deployment roadmap has been developed for South Africa within the national strategic plan, utilizing thorium-based fuel. The roadmap was developed through analysis of economical, strategic and historical aspects. The accumulated advantages of thorium-based fuels are summarized, which could form the initiative to implement thorium-based nuclear fuels in South Africa. A timeline (which forms the basis of the roadmap) was constructed and consists of three different phases. Phase 1 starts in 2015 and extends to 2030. Phase 2 starts in 2031 and ends in 2044 whilst Phase 3 is from 2045 to 2060. Each phase is discussed with regard to construction, implementation and research activities. This roadmap starts at current pressurized water reactors (PWRs) and advances to future reactor technologies, using an evolutionary approach. In addition to the results reported in this paper, the economic advantages to introducing thorium as a fertile component in PWR fuels as compared to once-through conventional uranium-only cycles is explored (Du Toit & Cilliers, 2014). The economic evaluation compares uranium fuel to thorium-uranium fuel in terms of the fuel cycle costs, reactor downtime costs due to refuelling and income derived from electricity sales.


Related Articles

  • Revisiting the melting temperature of NpO2 and the challenges associated with high temperature actinide compound measurements. Böhler, R.; Welland, M. J.; Bruycker, F. De; Boboridis, K.; Janssen, A.; Eloirdi, R.; Konings, R. J. M.; Manara, D. // Journal of Applied Physics;Jun2012, Vol. 111 Issue 11, p113501 

    This work revisits the melting behaviour of neptunium dioxide, an actinide compound which can be produced in the nuclear fuel during operation, and which has an important impact on the nuclear fuel and waste radioactivity especially on the very long term. The present experimental approach...

  • Thorotrast--Associated Liver Cancer. Khan, Anwaar A. // American Journal of Gastroenterology;Sep1985, Vol. 80 Issue 9, p699 

    Thorotrast-related liver cancer is rare. A case of such cancer is presented. Thorotrast had been used intravenously in 1947, 38 years preceding the detection of cancer. A brief history of the use of colloidal solution of thorium dioxide (thorotrast) as a contrast material is discussed, along...

  • The extraction of thorium by calix[6]arene columns for urine analysis. Mekki, S.; Bouvier-Capely, C.; Jalouali, R.; Rebière, F. // Radiation Protection Dosimetry;Mar2011, Vol. 144 Issue 1-4, p330 

    Thorium is a natural alpha-emitting element occurring in various ores and has numerous industrial applications. Routine monitoring of potentially exposed workers is generally achieved through radiobioassay (urine and faeces). The procedures currently used for analysing actinides such as thorium...

  • Adsorption of Th (IV) by peat moss. Liu Zhirong; Ye Rong; Sun Xinhuai // Desalination & Water Treatment;Apr2011, Vol. 28 Issue 1-3, p196 

    The peat moss has been characterized and used for the removal of Th (IV) from aqueous solutions using batch adsorption experiments. Effects of factors such as pH, ionic strength, contact time, peat moss dosage and initial thorium concentration on thorium adsorption were studied. The results...

  • Recent Research of Thorium Molten-Salt Reactor from a Sustainability Viewpoint. Kamei, Takashi // Sustainability (2071-1050);Oct2012, Vol. 4 Issue 10, p2399 

    The most important target of the concept "sustainability" is to achieve fairness between generations. Its expanding interpolation leads to achieve fairness within a generation. Thus, it is necessary to discuss the role of nuclear power from the viewpoint of this definition. The history of...

  • Variations of U/Th-series nuclides with associated chemical factors in the hot spring area of northern Taiwan. Chun-Chih Lin; Tieh-Chi Chu; Yu-Fen Huang // Journal of Radioanalytical & Nuclear Chemistry;Oct2003, Vol. 258 Issue 2, p281 

    The relationship of the activity ratios (ARs) of U/Th-series nuclides and associated factors (pH, Eh, and the concentrations of Cl- and SO42-) in the hot spring area of Taipei were determined. The contents of U and Th in water decreased with increasing pH. The 234U/238U ARs have been ascribed to...

  • BASIS FOR MURR PROGRAM TO STUDY THE FUNDAMENTAL SCIENCE OF THE ELECTROCHEMISTRY OF ACTINIDES IN MOLTEN SALT SOLUTIONS. Schwarz, E. A.; Pinhero, P. J. // Proceedings of the Institute of Nuclear Materials Management Ann;2010, p1 

    There are many philosophies about nuclear fuel reprocessing with reference to safeguards and nuclear materials management. One camp believes that nuclear fuel reprocessing opens the proliferation floodgates, while others believe that reprocessing is needed to close the nuclear fuel cycle. Dr....

  • Recent advances on the chemistry of solvent extraction applied to the reprocessing of spent nuclear fuels and radioactive wastes. Paiva, A. P.; Malik, P. // Journal of Radioanalytical & Nuclear Chemistry;Aug2004, Vol. 261 Issue 2, p485 

    After a brief description of the PUREX process as a starting point, this paper aims to point out some of its most recent developments, always from the viewpoint of the chemistry involved in the solvent extraction methods. In addition to PUREX, other well-known technological approaches devoted to...

  • Reactor Production of Thorium-229. Boll, Rose A.; Garland, Marc; Mirzadeh, Saed // AIP Conference Proceedings;2005, Vol. 769 Issue 1, p1674 

    Focuses on the increase of interest in the clinical applications of bismuth-123. Investigation of alternative production of routes for Thorium-229; Computation of the annual production rate of Thorium-229; Assessment of the lack of neutron capture cross-section data of the intermediate...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics