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Encyclopedia of Marine and Energy Technology


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Nuclear power


Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions.

Nuclear power plant


A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. The produced thermal energy is used to generate steam that drives a steam turbine connected to a generator that produces electricity.

Nuclear reactor


A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions.

Nuclear reactor core


A nuclear reactor core is the portion of a nuclear reactor containing the nuclear fuel components where the nuclear reactions take place and the heat is generated.

Nuclear reactor safety system


The three primary objectives of nuclear reactor safety systems as defined by the U.S.

Nuclear Regulatory Commission


The Nuclear Regulatory Commission (NRC) is an independent agency of the United States government tasked with protecting public health and safety related to nuclear energy.

Nuclear renaissance


Since about 2001 the term nuclear renaissance has been used to refer to a possible nuclear power industry revival, driven by rising fossil fuel prices and new concerns about meeting greenhouse gas emission limits.

Nuclear reprocessing


Nuclear reprocessing is the chemical separation of fission products and unused uranium from spent nuclear fuel.

Nuclear safety and security


Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the environment from undue radiation hazards".

Nuclear technology


A technology that involves the nuclear reactions of atomic nuclei.

Nuclear transmutation


Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element.



Nucleation is the first step in the formation of either a new thermodynamic phase or a new structure via self-assembly or self-organization.



A nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus. The number of nucleons in a nucleus defines an isotope's mass number (nucleon number).



Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons (protons and neutrons) and nuclei.



A nuclide (or nucleide) is a class of atoms characterized by their number of protons, Z, their number of neutrons, N, and their nuclear energy state.

Numerical weather prediction


Numerical weather prediction (NWP) uses mathematical models of the atmosphere and oceans to predict the weather based on current weather conditions.



A synthetic polymer which is chemically inert and resistant to erosion and impingement attack. It is used for orifice plates, valve seats and as a coating for salt water pipes.

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