nuclear reactor Articles

  • Emerging Asian Economies Drive the Increase in World Energy Use from 2015 to 2040

    World energy consumption is projected to increase by 28% by 2040, according to the International Energy Outlook 2017 (IEO2017), released today by the U.S. Energy Information Administration (EIA). Most of the world's growth in energy demand is projected to take place in countries outside of the Organization for Economic Cooperation and Development (OECD). China and ...


    By Smart Grid Observer

  • 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 ...

  • 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

  • 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

  • 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

  • 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

  • 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 ...


  • 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

  • Local blockage analysis of lead-cooled next-generation nuclear power reactors

    Local blockage is one of the possible severe accidents which may occur in lead (Pb)- or lead-bismuth (Pb-Bi)-cooled fast reactors due to their high melting temperature. In a local blockage accident, the local temperature increase cannot significantly reduce power level inherently. Therefore, this type of accident should be considered in the core design optimisation of those reactors. In the ...


    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

  • 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

  • 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

  • Multi–physics modelling of nuclear reactors: current practices in a nutshell

    Current practices in the nuclear industry to model the transient behaviour of nuclear reactors are based on the use of different solvers for resolving the different physical fields, and to some extent the different scales. The overall time–dependence is computed by a coarse–mesh neutronic solver coupled to a coarse–mesh thermal–hydraulic solver. The meso–scale information in the thermal–hydraulic ...


    By Inderscience Publishers

  • Embedding nuclear physics rules and fuel chemistry limits in control algorithms for a fuel-efficient nuclear reactor

    In a nuclear reactor, the energy which is stored in the fuel is proportional to the amount of fissile material. The consumption of that amount, after a set burn-up, should and must result in delivering a set energy, barring leakages (losses). The loss of energy due to an inefficient control algorithm, after a set burn-up, is a problem that no one has yet addressed. Nuclear fuel chemists and ...


    By Inderscience Publishers

  • Fast reactor knowledge inventory

    The International Atomic Energy Agency (IAEA) took an initiative to coordinate the preservation of knowledge in the area of Fast Reactors (FRs). In the framework of this initiative, the IAEA intends to create an international inventory of information on FRs through an integrated Fast Reactor Knowledge Organisation System (FR-KOS) established and maintained by the IAEA. FR-KOS is based on the ...


    By Inderscience Publishers

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