These were in rich uranium orebodies and moderated by percolating rainwater. The world's first nuclear reactors 'operated' naturally in a uranium deposit about two billion years ago. The steam is used to drive the turbines which produce electricity (as in most fossil fuel plants). The energy released from continuous fission of the atoms of the fuel is harnessed as heat in either a gas or water, and is used to produce steam. The principles for using nuclear power to produce electricity are the same for most types of reactor. In most naval reactors, steam drives a turbine directly for propulsion.) (In a research reactor the main purpose is to utilise the actual neutrons produced in the core. In a nuclear power reactor, the energy released is used as heat to make steam to generate electricity. How does a nuclear reactor work?Ī nuclear reactor produces and controls the release of energy from splitting the atoms of certain elements. For more advanced types, see pages on Advanced Nuclear Power Reactors, Small Nuclear Power Reactors, Fast Neutron Reactors and Generation IV Nuclear Reactors. This page is about the main conventional types of nuclear reactor. About 10% of the world's electricity is produced from nuclear energy.New designs are coming forward, both large and small.The first generation of these reactors have all been retired, and most of those operating are second-generation.Most nuclear electricity is generated using just two kinds of reactor which were developed in the 1950s and improved since.Nuclear reactors work by using the heat energy released from splitting atoms of certain elements to generate electricity.
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