Total Body Exposure Internal Exposure Internal radiation exposure hazards result from radioactive material that gets inside the body when you breathe it or eat it or when it passes through your skin. Internal radioactive materials produce radiation exposure the entire time they are in the body until the material is no longer radioactive it decays or is removed naturally by the body. It is a gamma emitter.
Coal is crushed to a fine dust and burnt. Oil and gas can be burnt directly. The main bit to remember: Fossil fuel power station - how it works The steam that has passed through the power station's turbines has to be cooled, to condense it back into water before it can be pumped round again.
This is what happens in the huge "cooling towers" seen at power stations. Some power stations are built on the coast, so they can use sea water to cool the steam instead.
However, this warms the sea and can affect the environment, although the fish seem to like it. Mind you, this figure is bound to have changed since this page was written, so check the figures if you want to quote them. Burning coal produces sulphur dioxide, an acidic gas that contributes to the formation of acid rain.
This can be largely avoided using "flue gas desulphurisation" to clean up the gases before they are released into the atmosphere. This method uses limestone, and produces gypsum for the building industry as a by-product.
However, it uses a lot of limestone. More details on 'clean coal technology' from BBC News web site Crude oil called "petroleum" is easier to get out of the ground than coal, as it can flow along pipes.
This also makes it cheaper to transport. I ought to point out that some scientists are claiming that oil is not a 'fossil' fuel - that it is not the remains of prehistoric organisms after all. They claim it was made by some other, non-biological process. Currently this is not accepted by the majority of scientists.
It is easy to transport along pipes, and gas power stations produce comparatively little pollution. What is crude oil? Other fossil fuels are being investigated, such as bituminous sands and oil shale. The difficulty is that they need expensive processing before we can use them; however Canada has large reserves of 'tar sands'which makes it economic for them to produce a great deal of energy this way.
As far as we know, there is still a lot of oil in the ground.
But although oil wells are easy to tap when they're almost full, it's much more difficult to get the oil up later on when there's less oil down there.
That's one reason why we're increasingly looking at these other fossil fuels. Advantages Very large amounts of electricity can be generated in one place using coal, fairly cheaply. Transporting oil and gas to the power stations is easy. Gas-fired power stations are very efficient.
A fossil-fuelled power station can be built almost anywhere, so long as you can get large quantities of fuel to it. Didcot power station, in Oxfordshire, has a dedicated rail link to supply the coal.
Disadvantages Basically, the main drawback of fossil fuels is pollution. Burning any fossil fuel produces carbon dioxide, which contributes to the "greenhouse effect", warming the Earth.
Burning coal produces more carbon dioxide than burning oil or gas. It also produces sulphur dioxide, a gas that contributes to acid rain. We can reduce this before releasing the waste gases into the atmosphere.
Mining coal can be difficult and dangerous. Strip mining destroys large areas of the landscape.May 05, · I used to be anti-nuclear. But, several years ago I had to reevaluate my thinking because if you agree with the world’s leading climate scientists that global warming is real and must be.
This introduction to nuclear physics provides an excellent basis for a core undergraduate course in this area. The authors show how simple models can provide an understanding of the properties of nuclei, both in their ground and excited states, and of the nature of nuclear reactions/5(5).
The nuclear fuel cycle is the series of industrial processes which involve the production of electricity from uranium in nuclear power reactors. Uranium is a relatively common element that is found throughout the world.
It is mined in a number of countries and must be processed before it can be used. Usually nuclear plants have very compact sites of to acres including the exclusion area around the plant. A typical site contains the buildings shown in the image map with brief descriptions of the functions below and more detail on the linked pages.
The following is a list of states that have admitted the possession of nuclear weapons or are presumed to possess them, the approximate number of warheads under their control, and the year they tested their first weapon and their force configuration. This list is informally known in global politics as the "Nuclear Club".
With the exception of Russia and the United States (which have subjected. Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology. We provide our utility customers around the world with the most reliable, dependable nuclear power plants, nuclear fuel, plant automation and operating plant products and services.