(a) What are the advantages of nuclear energy ?
(b) State the disadvantages of nuclear energy.
Advantages of Nuclear Energy
Despite potential drawbacks and the controversy that surrounds it, nuclear energy does have a few advantages over some other methods of energy production.
Expense
Less uranium is needed to produce the same amount of energy as coal or oil, which lowers the cost of producing the same amount of energy. Uranium is also less expensive to procure and transport, which further lowers the cost.
Reliability
When a nuclear power plant is functioning properly, it can run uninterrupted for up to 540 days. This results in fewer brownouts or other power interruptions. The running of the plant is also not contingent of weather or foreign suppliers, which makes it more stable than other forms of energy.
No Greenhouse Gases
While nuclear energy does have some emissions, the plant itself does not give off greenhouse gasses. Studies have shown that what life-cycle emissions that the plants do give off are on par with renewable energy sources such as wind power. This lack of greenhouse gases can be very attractive to some consumers.
Disadvantages of Nuclear Energy
One of the reasons that nuclear energy falls under fire so frequently is due to the many disadvantages it brings.
Raw Material
Uranium is used in the process of fission because it's a naturally unstable element. This means that special precautions must be taken during the mining, transporting and storing of the uranium, as well as the storing of any waste product to prevent it from giving off harmful levels of radiation.
Water Pollutant
Nuclear fission chambers are cooled bywater, in both the boiling water reactors(BWRs) and pressurised water reactors (PWRs) . In PWRs, cold water enters through primary pipes and the secondary pipes remove the heated water away, so the coolant is not in contact with the reactor. In BWRs, water runs through the reactor core, so if there is any leakage of fuel, the water can get contaminated and is transported to the rest of system.