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Archive for the ‘Nuclear Energy’ Category

Future Of Nuclear Power

December 8, 2009 Leave a comment

Still debatable as several other forms of renewable technologies are capable of meeting earth’s energy requirements for many centuries to come , if we find the right technology to harness them.

Besides, with improvement , the cost of generating electricity can be substantially reduced and also they are virtually risk free.

Though the importance of nuclear energy cannot be altogether neglected in present state, but the best possible approach will be to invest in it with giving equal attention to more sustainable forms of energy like wind and solar.

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Issues with Nuclear Power

December 7, 2009 Leave a comment

Nuclear Power’s environmental friendliness is still debatable with there being no acceptable solution for disposal of hazardous spent fuel.

The generation of energy again depends on natural reserves of radioactive fuel which are bound to be exhausted one day even if we are able to cope with all other issues.

This again raises the question why invest heavily on something which does not have a very long foreseeable future.

All other forms of renewable energy are in direct or indirect way dependent on sun which in all possibility is bound to shine for another million years.

Lastly again, the risk factor is the highest in this technology. No matter how many safety procedures we employ, we cannot deny the fact that human errors are bound to happen some day or other.

Schematic of LFTR (Liquid fluoride thorium reactor)

December 6, 2009 Leave a comment

Nuclear Energy – Facts

December 5, 2009 Leave a comment

On April 17, 1985, the Nuclear Regulatory Commission testified that the crude probability of a severe nuclear accident in this country over the next 20 years involving large releases of radioactive materials was roughly 45% (nearly 50-50)!

Cost of decommissioning a nuclear power plant is huge, sometimes even more than setting up a new one.

Since its beginning, nuclear power has cost US over $492,000,000,000

Nuclear power contributes only 20-22% of US electricity; yet studies have shown that in the U.S. , waste or inefficiently use energy ranges between 25% – 44% of all electricity generated!

Nuclear Energy – Environmental Impacts

December 4, 2009 Leave a comment

Pros
No Co2,So2, No2 or particulate matter, thereby checks global warming.
Solid waste, occupies less volume, hence easier to manage its disposal.

Cons
Poses enormous risk in case something goes wrong.
Even spent fuel poses radioactive risk and needs to be disposed off safely.

Nuclear Power Plant – Working Principle

December 3, 2009 Leave a comment

Same as any other conventional power plant. Except that here the harnessed energy comes from fission of a nucleus.

The nuclear reaction is carried out in a controlled manner . Nuclear reactors generally have automatic and manual systems to shut the fission reaction down if unsafe conditions are detected.

A cooling system removes heat from the reactor core and transports it to another area of the plant, where the thermal energy can be harnessed to produce electricity or to do other useful work.

The hot coolant is used as a heat source for the boiler, and the pressurized steam from that boiler will power one or more steam turbine driven electrical generators.

Classification of Nuclear Reactors

November 24, 2009 2 comments