nuclear reactor Articles

  • Fractional divergence for neutron flux profile in nuclear reactors

    The concept of fractional divergence is developed for application to the constitutive neutron diffusion equation for describing the neutron flux profile. The analytical solutions for bare reactors in multiplying media and neutron diffusion in non-multiplying media are obtained for fractional-order differential equations. This definition of fractional divergence describes the neutron flux by not ...


    By Inderscience Publishers

  • Thermal behaviour of the IPR-R1 TRIGA nuclear reactor

    Experimental and analytical studies have been performed at the Nuclear Technology Development Center ? CDTN (Belo Horizonte) to find out the temperature distribution in the IPR-R1 TRIGA Research Nuclear Reactor, as a function of power and position in the reactor core. The basic safety limit for the TRIGA reactor system is the fuel temperature, both in steady-state and pulsed mode operation. The ...


    By Inderscience Publishers

  • Coupling a hydrogen production process to a nuclear reactor

    Work is currently underway to define a pre-conceptual design of a hydrogen production plant. The reference case is a VHTR dedicated to hydrogen production using the sulphur-iodine process. The chemical part of the plant is based on a very detailed flow-sheet where all components are listed. Considering the volume and flow-rates of the circulating products, a detailed image of the chemical plant ...


    By Inderscience Publishers

  • A future for nuclear energy: pebble bed reactors

    Pebble Bed Reactors could allow nuclear plants to support the goal of reducing global climate change in an energy hungry world. They are small, modular, inherently safe, use a demonstrated nuclear technology and can be competitive with fossil fuels. Pebble bed reactors are helium cooled reactors that use small tennis ball size fuel balls consisting of only 9 grams of uranium per pebble to provide ...


    By Inderscience Publishers

  • Molybdenum: Manufacturing Process and Use in Nuclear Reactors

    Incandescent lamps used the first molybdenum product in the form of lead wire. This event took place early in the 20th century. Strength and stability of molybdenum at high temperatures were main factors that made it a choice for this application. However, since then molybdenum has found place in many other applications. It has become ...


  • The renewal of licensing system for nuclear reactors in Indonesia

    This paper describes the renewal of the licensing system for nuclear reactors in Indonesia stipulated in the new legislation and regulations. The new Act, Number 10 Year 1997 on Nuclear Energy, provides for licensing by the regulatory body of personnel and installations. The construction and operation of nuclear reactors and other nuclear installations, as well as the decommissioning of nuclear ...


    By Inderscience Publishers

  • Coupling the nickel–iodine–sulphur cycle with a nuclear reactor

    Nuclear hydrogen production is a technically feasible and economically viable option for addressing future energy needs. Several projects have been started on the co–generation of hydrogen and electricity from nuclear energy. In this report, the nickel sulphur iodine (NIS) cycle, a thermochemical water splitting cycle originally developed in ENEA for solar hydrogen production, was studied to be ...


    By Inderscience Publishers

  • Optimisation of the coupling of nuclear reactors and desalination systems in Morocco

    This study has been undertaken in the framework of IAEA CRP on 'Optimisation of the Coupling of Nuclear Reactors and Desalination Systems in Morocco'. Two sites have been selected to host nuclear desalination plants, and different combinations with nuclear reactors have been investigated. Other combinations with fossil fuel plants have been examined for comparison. The results obtained showed the ...


    By Inderscience Publishers

  • The CEA/BARC collaboration on the use of nuclear reactors for desalination

    This paper presents the collaboration between the French Atomic Energy Commission (Commissariat a l'Energie Atomique, CEA) and the Indian Bhabha Atomic Research Centre (BARC) on the use of nuclear reactors for desalination. The joint R&D effort aims at developing optimised nuclear desalination systems, producing large amounts of desalted water at the lowest cost and in a sustainable manner. It ...


    By Inderscience Publishers

  • Significant wastage of a nuclear reactor pressure vessel head

    Boric acid, used in pressurised water nuclear reactors, can be very corrosive under some conditions. A 2050 cubic cm corrosion pit was discovered on the Davis–Besse reactor head in 2002. Two engineers were criminally prosecuted for submitting false inspection records to US nuclear regulators.Keywords: nuclear power, stress corrosion cracking, pressurised water reactors, criminal prosecution, ...


    By Inderscience Publishers

  • Helium gas for nuclear reactors case study

    Application Moisture is measured in helium gas used for nuclear reactors. The helium is used as a reactor coolant because of its excellent thermal properties and chemical inertness. Problem If the helium becomes contaminated with moisture, it will cause both degradation of graphite rods and an undesired change in the process's heat balance. At worst, a ...

  • Nuclear desalination complexes based on PWR and gas cooled reactors

    This report is prepared based on the results of activities performed in Russia on the development of energy desalination complexes (EDCs) with different reactor plants. The activities were aimed at the development of conceptual designs for EDCs and evaluation of the EDC from a technical-economic point of view, commercial attractiveness and economic efficiency based on reactor plants such as ...


    By Inderscience Publishers

  • Nuclear desalination by waste heat utilisation in an advanced heavy water reactor

    The use of thorium for nuclear power generation is an important element of the Indian atomic energy programme. The design and development of the Advanced Heavy Water Reactor (AHWR) is a step in this direction. Intensive design activity is underway to set up a 300-MWe AHWR. The design of the AHWR incorporates several features to simplify the design and to eliminate certain systems and components, ...


    By Inderscience Publishers

  • Study of confinements in the particle swarm optimisation for application to the nuclear reactor reload problem

    Particle Swarm Optimisation (PSO) is a metaheuristic technique based on the social aspects of intelligence. Some PSO models have been developed for combinatorial optimisation, although none of them presented satisfactory results to optimise the combinatorial problem of the Nuclear Reactor Reload Problem (NRRP). The Particle Swarm Optimisation with Random Keys (PSORK) model is a variant of the PSO ...


    By Inderscience Publishers

  • Industrialisation guidelines for South Africa's pebble bed modular nuclear reactor programme

    The industrialisation of any new technical system requires the establishment of the required industrial infrastructure and supplier base for the system. This paper presents a new methodology used for the determination of industrialisation guidelines for South Africa's Pebble Bed Modular Nuclear Reactor (PBMR) programme. The methodology consisted of a number of steps. These were a survey of the ...


    By Inderscience Publishers

  • Contribution to preservation and management of nuclear knowledge on WWER reactor pressure vessels

    A new project focused on nuclear knowledge preservation is ongoing in the European Commission (EC)-Joint Research Centre Institute of Energy with an intention to collect all available information about the Reactor Pressure Vessels (RPV) of WWER-type reactors, as well as to analyse and summarise the most important items and issues. This activity is in line with the European Community FP6 projects ...


    By Inderscience Publishers

  • Nuclear power reactor Unterweser in Lower Saxony, DE - Case Study

    On 29th of September 1978 the pressurised water reactor Unterweser went on stream and was the most powerful reactor in the world. The Nuclear power reactor Unterweser (KKU - Kernkraftwerk] had an electrical output of 1410 MW. In the course of the energy turnaround, the reactor was turned off on the 18th of March 2011 and completely shut down by the operator E.ON Kernkraft GmbH in June 2011. ...


    By AMEX GmbH

  • Identification of a research nuclear reactor using computational intelligence techniques

    In the field of nuclear engineering, the development of methods to identify the non-linear dynamic behaviour of nuclear reactors is an important area of research. In this paper, the design and performance of a multi-input multi-output Takagi?Sugeno (TS) neuro-fuzzy network are presented. The aim of this network is to identify the temporal behaviour of the power, the fuel temperature and the core ...


    By Inderscience Publishers

  • The Luus-Jaakola algorithm applied to a nuclear reactor core design optimisation

    The Luus-Jaakola (LJ) algorithm is a random search optimisation method that has been successfully employed mainly in chemical engineering problems. In this paper, we apply this algorithm to an optimisation problem solved previously with genetic algorithms, particle swarm optimisation and Metropolis algorithms. This problem consists of adjusting several reactor cell parameters, such as dimensions, ...


    By Inderscience Publishers

  • A nuclear desalination complex with a VK-300 boiling type reactor facility

    RDIPE has developed a detailed design of an enhanced safety nuclear steam supply system (NSSS) with a VK-300 boiling water reactor for combined heat and power generation. The thermal power of the reactor is 750 MW. The maximum electrical power in the condensation mode is 250 MWe. The maximum heat generation capacity of 400 Gcal/h is reached at 150 MWe. This report describes, in brief, the basic ...


    By Inderscience Publishers

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