Nuclear Power Plant Isar, Germany

Spent nuclear fuel pool

Turbine of a nuclear plant

Plants

Nuclear Moratorium

The nuclear moratorium supposed blocking 5 projects of nuclear power plants that had approved the 7 (and some insiders) in Spain.

The National Energy Plans and Nuclear Moratorium

In 1983 he drafted a National Energy Plan in qual nuclear energy in Spain was hit hard.

To bring national electricity production to energy demand and adjust prices of the Congreos Diputoado in June 1984 approved the 1983 National Energy Plan (PEN-83).

The nuclear stop was the main novelty of the PEN-83 that was slowing building program of nuclear power.

What reasons provoaron the…

Steam turbine

Steam turbine

A steam turbine is a machine that exploits the thermal energy of steam under pressure, converting it into useful mechanical energy through a thermodynamic transformation of expansion. Specifically, the steam turbine converts the internal energy of the vapor into kinetic energy of rotation.

The steam turbine, thanks to the highest thermal efficiency and the best power / weight ratio, has completely replaced the steam engine, which was an alternative engine invented by Thomas Newcomen and then significantly improved by James Watt.

From a thermodynamic point of view, the maximum…

Electric power

Electric power

We define electrical energy as the form of energy that results from the existence of a potential difference between two points. When these two points are put in contact by means of an electrical conductor we obtain an electric current.

In physics, the electric potential energy, also called electrostatic potential energy, is the potential energy of the electrostatic field. This is an energy that has an electrical charge distribution, and is linked to the force exerted by the field generated by the distribution itself. Together with magnetic energy, the electric potential energy constitutes…

Atomic Energy

Atomic Energy

Atomic energy comes from the atom, it is the energy that holds together neutrons and protons of the nuclei of atoms. It is also known how nuclear energy, which comes from the nucleus. The name nuclear energy is used because most of the energy of an atom resides in its nucleus.

Two parts of the atom, the nucleus and the crust are differentiated. In the cortex, an indeterminate number of electrons orbit around the nucleus. The nucleus is composed of an indeterminate number of neutrons and protons. The amount of protons in the nucleus will determine the element that the atom is treated,…

Fukushima nuclear accident

Fukushima nuclear accident

On March 11, 2011 in Fukushima occurred one of the worst nuclear accidents in history after the Chernobyl nuclear accident.

A 8.9 magnitude earthquake off the northwest coast of Japan and a subsequent tsunami severely affected Dahiichi Fukushima nuclear plant on the northeast coast of Japan.

At the time of the nuclear accident at the Fukushima reactors had 6. Reactors 1, 2 and 3 were operating while nuclear reactors 4, 5 and 6 were unemployed for maintenance.

After the earthquake Fukushima reactors that were still running is automatically stopped. To cool the reactors,…

Nuclear energy and the environment

Nuclear energy and the environment

Populritat Although nuclear energy is very low there are applications of nuclear energy for works for the environment.

What is the relationship between nuclear energy and the environment?

To reduce pollution in the environment, we need to know where and how much to find these pollutants, the causes of contaminacióny the right solution to prevent it from spreading.

The main source of pollution is found in human activities contributing largely to the increase in pollutants, growth poblacióny industrial technological developments.

At present, the biggest…

Situation of nuclear energy in the world

Situation of nuclear energy in the world

Nuclear energy began to develop during the first decade of 1940. Initially, the research was aimed at the development and production of the atomic bomb. Subsequently, research began on other applications of nuclear energy; the investigation focused on the peaceful use of nuclear energy.

Currently, there are 30 countries in the world that have nuclear power plants for the generation of electricity. In any case, the number of countries that take advantage of nuclear energy is much greater since countries such as Denmark and Italy, which do not have any nuclear facilities, obtain about…

Nuclear Power Plant

Nuclear Power Plant

A nuclear power plant is a facility for obtaining electrical energy using nuclear energy.

Its operation is similar to that of a thermal power plant or that of a solar thermal plant: from a source of energy thermodynamics is used to obtain heat, with the heat to get steam and with the steam to drive a turbine that will generate electricity.

The difference between the different types of electrical installations is in the energy source: a nuclear power plant uses the heat released in the nuclear fission reactions of certain atoms, in a thermal power station the heat source (thermal…

Nuclear waste

Nuclear waste

One of the main problems in the use of nuclear energy is the management of nuclear waste as it is very dangerous and difficult to eliminate.

What is done with nuclear waste?

Nuclear waste is one of the main problems related to nuclear energy. If these wastes are not treated properly, they are highly hazardous to the population and the environment.

Radioactive waste can be classified according to its physical and chemical characteristics and by its activity.

Classifying them by their activity we have:

  • High-level nuclear waste, composed of elements of…

Boiling water nuclear reactor

Boiling water nuclear reactor

A boiling water reactor or BWR is a type of nuclear reactor. It is the second type of reactor most used in nuclear power plants in the world. Approximately 22% of the nuclear reactors installed in the different nuclear power plants use the boiling water reactor.

The main function of this type of reactors is their installation in power plants of power for the generation of electricity.

The most important feature of the boiling water reactor (BWR) is the use of pressurized water as a neutron moderator and as a core coolant. Unlike the pressurized water reactor (PWR), it does not…

Nuclear power in India

Nuclear power in India

Nuclear power in India is currently in a state of growth with strong nuclear development plans. By 2020, India has set a target to supply 14,600 MW to the grid through the use of nuclear energy. Subsequently, in 2050, India wants 25% of electricity is produced by nuclear energy.

India is a founding member of the global nuclear watchdog, the International Atomic Energy Agency in Vienna.

Because of these restrictions on trade and the lack of indigenous uranium, only India has been developing a nuclear fuel cycle to exploit its reserves of thorium.

Plans to boost nuclear power…

Types of nuclear reactors

We distinguish two types of nuclear reactors

  • Nuclear research reactors. This type of reactors used neutrons generated during nuclear fission reactions to produce radioisotopes that are going to be used in other applications of nuclear energy or materials for studies.
  • Nuclear power reactors. These reactors are based on the use of the thermal energy generated in the fission reactions. The main and most known application of this type of reactor is to generate electricity in nuclear power plants. However, also they are used for desalination…

Nuclear reactor

Nuclear reactor

A nuclear reactor is an installation capable of initiating, controlling and maintaining nuclear reactions (usually nuclear fission) chain that occur in the core of this facility.

The composition of the nuclear reactor is formed by the nuclear fuel, coolant, control elements, structural materials and, in the case in question a thermal nuclear reactor, the moderator.

Nuclear reactors can be classified as thermal reactors and fast reactors.

Thermal reactors are those which function by delaying (moderating) the fastest neutrons or increasing the proportion of fissile atoms.…

History of nuclear energy

History of nuclear energy

To explain the history of nuclear energy we could distinguish three major stages:

  • Physical and chemical scientific studies of the elements.
  • The development of the nuclear bomb during World War II.
  • Use of nuclear energy in the civil field.

Scientific studies cover this whole period since the first Greek philosophers began to define atoms, until the development of the first nuclear bomb. In this process, different scientists discover the presence of electrons, neutrons and protons and properties that make one atom more radioactive than another.

Operation of a nuclear power plant

Operation of a nuclear power plant

Nowadays, the main use given to nuclear energy is the generation of electric power. Nuclear power plants are responsible of doing this process. Almost all nuclear power plants in production are using nuclear fission since the nuclear fusion, despite being under development, is currently unfeasible.

The operation of a nuclear power plant is identical to the operation of a thermoelectric power plant operating with coal, oil or gas, except in the way of providing heat to the water for converting this one into steam. In nuclear reactors this process of producing heat is made by the fission…

Advantages and disadvantages of nuclear power

Advantages and disadvantages of nuclear power

In this section we analyze the advantages and disadvantages of nuclear power. Nevertheless, most organizations related to nuclear energy are already positioned for or against the use of nuclear power. On this site we try to make an objective analysis about this question, giving all the relevant information and offering a space for different conclusions.

Advantages of nuclear power

The generation of electricity through nuclear energy reduces the amount of energy generated from fossil fuels (coal and oil). Less use of fossil fuels means lowering…

Watt

Watt

Watt is the international standard power unit in SI.

James Watt (1736-1819), the inventor of the steam engine, accepted it as the unit of power in the SI unit system. It is the unit that measures the energy conversion rate (joules) divided by seconds. The watt symbol is represented by the letter W.

1W = 1 J / s

In mechanics the watt is the power developed by a force of a newton applied to a point that moves one meter for a second. That is, if the point on which a force of a newton is applied is displaced at a speed of 1 m / s, the power is equal to 1 watt:

1W = 1N…

Nuclear energy in Brazil

Nuclear energy in Brazil

In 2016, gross electricity production in Brazil was 579 TWh, including 381 TWh (66%) of hydroelectric power, 56 TWh (10%) of gas, 51 TWh (9%) of biomass and waste, 34 TWh ( 6%) of wind energy and solar energy, 26 TWh (4%) of coal, 16 TWh (3%) of nuclear and 15 TWh (3%) of oil.

The high dependence on hydroelectric energy leads to a certain climate vulnerability that is driving the policy to reduce dependence on it.

Around 40% of Brazil's electricity is produced by the national system of Eletrobrás a. About 20% of electricity comes from public utilities, and the rest comes…

Nuclear energy

Nuclear energy is the energy contained in the nucleus of atoms. Nuclear energy is used in multiple applications (see applications of nuclear energy), but the best known application is the generation of electricity.

The term nuclear energy is often used to refer to the electrical energy generated by nuclear power plants.

One of the ways of harnessing…

Nuclear power in France

In 1974 the French government decided to rapidly expand production capacity of nuclear power in France just after the first oil crisis. This Decision n was made in the context of a France with substantial competition in engineering, but few indigenous energy resources. Nuclear power, with the cost of fuel is a relatively small the total cost, in this sense, getting a reduction in imports and greater energy security could.

As a result of the decision of 1974, France currently has a high level of energy independence and almost the lowest cost electricity in Europe. It also has a level…

Nuclear power in Mexico

Nuclear power in Mexico

Mexico is rich in hydrocarbon resources and is a net exporter of energy. Country's interest in nuclear energy is based on the need to reduce their dependence on these sources of energy. In recent years, Mexico's energy is increasingly dependent on natural gas.

The energy growth was very rapid in the 1990s, but then stabilized for a few years. Since 2007 expected new growth in demand for electricity to an average rate of almost 6% per year. In 2007, we generated 257 million kWh. Supply Origin is varied electric, gas 126 TWh (49%), oil of 52 TWh (20%), coal 32 TWh (12.5%) and hydroelectric…

Nuclear power in Spain

Nuclear power in Spain

The first nuclear power plant built in Spain in 1969, was the José Cabrera nuclear power plant. All nuclear plants that were built at that time, builders and engineers were the same entity. The father of nuclear energy in Spain was Jose Maria Otero of Navascués, who was the director of the laboratory and Research Workshop of Staff of the Navy.

The second generation of nuclear plants were built by the following companies: Company Grouped, INITEC and ENSA.

The third generation includes Trillo and nuclear power plant-2. Proyewctadas were 5 other nuclear plants but construction…