Nuclear reactors use a very commonly found material as their main source for producing electricity, uranium. There are a few different uranium isotopes that exist on earth, with uranium-235 as the most powerful and uranium-238 as the most abundant. Uranium-235 is a very fissile material, which means that its atoms can be easily split apart by a neutron, releasing two lighter nuclei, three neutrons and some gamma radiation. Nuclear technology takes advantage of this effect (see diagram below). Rods of uranium act as fuel, and are placed in a reactor. A slow neutron is then sent towards a uranium nucleus, with results in an unstable nucleus of uranium-236. This splits up, and the three extra neutrons split other nearby uranium nuclei up, causing a chain reaction. This reaction, if uncontrolled will cause a nuclear explosion, releasing massive amounts of heat and radiation. Therefore, control rods made of cadmium or boron (used to slow down the fission process) are partially inserted into the core of the reactor, to absorb small amounts of neutrons. At the same time, water which acts as a coolant is pumped into the reactor, creating steam which turns a turbine connected to a power dynamo.
On the economical side of it all, using nuclear power alone is an advantage. Due to the high economic competitiveness of nuclear power, costs of “construction, financing and plant operations”, along with “waste management and decommissioning” have been reducing significantly . Nowadays, nuclear power has beaten fossil fuels as being a less expensive energy source, owing to relatively lower construction and operational costs. This is a very desirable trait, as countries like France’s rely heavily nuclear power. About three quarters of the country live on electricity produced by the 59 reactors, and an industry of exporting nuclear electricity to other countries has been developing. Nuclear power is one of the last hopes for saving the environment, and capital of ELDCs (economically less developed countries) with a rapidly growing population, like India.
This is a very environmental friendly source of energy, for it does not produce any sort of pollution. Unlike coal, oil and gas which produce greenhouse gases, causing acid rain, damaging the ozone layer, and contributing to global warming. Nuclear energy also a very efficient power source, as one pound of uranium can produce the same amount of power as burning 1,500 tons of coal. However, some people may disagree on this, for although we have cut down on air pollution, we have started to produce radioactive pollution.
Nuclear energy is stable and reliable, and is not influenced by any external conditions. Take solar and wind energy for example, if the sun was covered up by clouds and the wind was not strong enough, there would be no electricity produced.
As all things good, producing nuclear power comes with several drawbacks. One of...