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What is the nuclear energy? Nuclear energy is the internal energy in the atomic nucleus, that is, the central part of an atom. Atoms are the smallest particles in which a material can be divided. The nucleus of an atom is composed of two subparticles: neutrons and protons. These subparticles are held together due to energy links. At the moment in which these bonds are modified, a large amount of thermal energy is released in the form of heat.
Nuclear technology deals with the use of this internal energy for a wide variety of applications. The most well-known application of nuclear energy is the generation of electric power in nuclear power plants.…
Last review: February 15, 2019
Nuclear reactors can be classified according to different criteria. One of the criteria is the purpose for which they will be used. In this regard we distinguish the types of nuclear reactors used for civilian purposes, for military purposes or for research purposes.
Civil nuclear reactors use nuclear energy to generate power for electricity; military reactors create materials that can be used in nuclear weapons such as the atomic bomb; and research nuclear reactors used to develop weapons or energy production technology, for development purposes, for nuclear physics experimentation and to produce radioisotopes for medicine and research. Some reactors have…
Last review: February 14, 2019
In physics and chemistry, an ion is an atom or molecule that does not have a neutral electrical charge. A cation with a positive electric charge is called a cation, and an ion with a negative electric charge is anion.
The process of winning or losing electrons (with respect to the neutral atom or molecule) is called ionization. Cations and anions are usually represented by the symbol of the corresponding atom and the symbol "+" or "-", respectively. If the number of electrons gained or lost is greater than one, this is also indicated.
The cations and anions are attracted to the cathode and the anode, respectively.
Michael Faraday was the first to propose…
Last review: January 24, 2019
The Kaiga nuclear plant is a nuclear power plant for the generation of electric power. The facility is located in the Uttara-Kannada district of the state of Karnataka in India. The nuclear power plant includes four power units of 220 MW each. The type of reactor used to harness the radiation generated in nuclear fission is the PHWR.
A coolant in a nuclear reactor is a liquid or gaseous substance that passes through the reactor core and removes heat from the nuclear fission reaction.
In the double-circuit power reactors, the reactor coolant enters the steam generator, which produces steam that drives the turbines, and in the single-circuit reactors the coolant (steam or gas) can serve as the working fluid of the cycle of the turbine. In research (for example, materials science) and special reactors (for example, in reactors for the accumulation of radioactive isotopes) the coolant only cools the reactor, the resulting heat is not used.
The following requirements are imposed on heat coolants:
Last review: December 27, 2018
A nuclear reactor is a facility capable of initiating, controlling and maintaining nuclear reactions (usually nuclear fission) in chain that occur in the core of this installation.
The composition of the nuclear reactor is formed by the nuclear fuel, the refrigerant, the control elements, the structural materials and, in the case of a nuclear reactor, the nuclear moderator.
To build a nuclear reactor it is necessary to have enough nuclear fuel, which we call critical mass. Having enough critical mass means having enough fissile material in optimal conditions to maintain a nuclear fission chain reaction.
Last review: December 24, 2018
In this section we analyze the advantages and disadvantages of nuclear energy. Nevertheless, most organizations related to nuclear energy are already positioned for or against the use of nuclear energy. 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.
The advantages and disadvantages of nuclear energy have made this alternative energy source one of the most controversial on the market today. Understanding the pros and cons of this energy source can help you make a more informed decision about your own energy use. Advantages of nuclear energy…
Last review: December 20, 2018
The moderator is a component that is part of nuclear reactors. It is located in the reactor core. The function of the moderator is to reduce the speed of neutrons in nuclear fission reactions.
During fission nuclear reactions, neutrons collide with fissile atoms (uranium and plutonium) present in the nuclear fuel causing fission. With each fission reaction, one or two neutrons are released at high speed.
The objective to maintain a chain fission reaction is that these neutrons hit other fissile atoms but at such a speed it is very difficult. The objective of the moderator is to reduce this speed and, in this way, obtain a better performance of the reactor.…
Last review: December 19, 2018
Nuclear waste management is understood as the set of activities that lead to its reuse, its disappearance or its neutralization and evacuation to suitable places. These measures must guarantee long-term security.
Nuclear waste management encompasses all the administrative and technical tasks necessary for the handling, treatment, conditioning, transport and storage of nuclear waste. These actions must take into account both economic and security factors. Isolation of nuclear waste
The isolation of nuclear waste is done through the interposition of natural and artificial barriers between radioactive waste and human beings, so as to prevent the escape of radionuclides…
Last review: December 19, 2018
The storage of nuclear waste of low and medium activity is based on the interposition of natural and artificial barriers between said nuclear waste and the environment, so that they are perfectly isolated for the time necessary until their radioactivity decays to harmless levels.
The storage of radioactive waste of low and medium activity is carried out in facilities prepared for it. Most of the waste is cleaning rags, filters and impurities of circuits, ion exchange resins, pieces of facilities, etc., coming from nuclear power plants. Also stored are gloves, syringes, containers, needles, biological waste, etc., generated in hospitals and industries with low or medium…
Last review: December 18, 2018
The transport of radioactive substances generated by the different applications of nuclear energy is carried out according to the recommendations established by the International Atomic Energy Agency (IAEA), included in the legislation in force through the European Agreement on the Transport of Dangerous Goods by Road.
The set of measures established has the objective of minimizing the probability of a nuclear accident occurring. In case of a nuclear accident the objective is to mitigate its effects, avoiding the dispersion of radioactive material and its possible assimilation by people who are nearby.
During the transport of nuclear waste, the containment of radioactive…
Last review: December 17, 2018