Today the world is facing acute problem of ’Energy security’ and Global warming. Energy requirement is going to swell several folds by 2050. To meet such a requirement alternative sources of energy like nuclear, solar and wind energy are the only viable possibilities. Solar and wind sources are uncertain for availability and, therefore, nuclear energy remains most dependable alternative.Nuclear Engineering deals with the application of breakdown of atomic nuclei based on the principle of Nuclear Physics. The important aspects of Nuclear Science and Technology include nuclear fission systems like a nuclear reactor and nuclear power plants, and even nuclear weapons. This field also deserves attention towards nuclear safety, heat transport, nuclear fuel, nuclear waste disposal technology, radioactivity in the environment and applications of radiation and radio-isotopes in nuclear medicine (diagnosis) and radiotherapy.