AN ISO 9001:2008 Certified
  • Need Inquiry Help? ▼
      Need Inquiry Help?
    +919958113774,8800373037 - Now Call Email :-
    L - 323 (gali No -7) Mahipalpur Extn Delhi-110037 TA-93D FIRST FLOOR,TUGLAKABAD EXTN KALKA JI, NEAR P.N.B BANK & ALLAHABAD BANK NEW DELHI-110019

World Nuclear power

Posted on by supperbrilliantpoint

Nuclear power is the use of sustained nuclear fission to generate heat and electricity. Nuclear power plants provide about 5.7% of the world’s energy and 13% of the world’s electricity. In January 2013, the IAEA reported there were 390 nuclear power reactors in operation in the world, operating in 31 countries. Also, more than 150 naval vessels using nuclear propulsion have been built.
There is an ongoing debate about the use of nuclear energy. Proponents, such as the World Nuclear Association, the IAEA and /wiki/Environmentalists_for_Nuclear_Energy”>Environmentalists for Nuclear Energy contend that nuclear power is a sustainable energy source that reduces carbon emissions. Opponents, such as Greenpeace International and NIRS, believe that nuclear power poses many threats to people and the environment.

Nuclear power plant accidents include the Chernobyl disaster (1986), Fukushima Daiichi nuclear disaster (2011), and the Three Mile Island accident (1979). There have also been some nuclear-powered submarine mishaps. Research into safety improvements is continuing and href=””>nuclear fusion, believed to be safer, may be used in the future.

China has 25 nuclear power reactors under construction, with plans to build many more, while in the US the licenses of almost half its reactors have been extended to 60 years, and plans to build another dozen are under serious consideration.However, Japan’s 2011 Fukushima Daiichi nuclear disaster prompted a rethink of nuclear energy policy in many countries. Germany decided to close all its reactors by 2022, and Italy has banned nuclear power. Following Fukushima, the International Energy Agency halved its estimate of additional nuclear generating capacity to be built by 2035.

The pursuit of nuclear energy for electricity generation began soon after the discovery in the early 20th century that radioactive elements, such as radium, released immense amounts of energy, according to the principle of mass–energy equivalence. However, means of harnessing such energy was impractical, because intensely radioactive elements were, by their very nature, short-lived (high energy release is correlated with short half-lives). However, the dream of harnessing “atomic energy” was quite strong, even though it was dismissed by such fathers of nuclear physics like Ernest Rutherford as moonshine. This situation, however, changed in the late 1930s, with the discovery of nuclear fission.

In 1932, James Chadwick discovered the neutron, which was immediately recognized as a potential tool for nuclear experimentation because of its lack of an electric charge. Experimentation with bombardment of materials with neutrons led Frédéric and Irène Joliot-Curie to discover induced radioactivity in 1934, which allowed the creation of radium-like elements at much less the price of natural radium. Further work by Enrico Fermi in the 1930s focused on using slow neutrons to increase the effectiveness of induced radioactivity. Experiments bombarding uranium with neutrons led Fermi to believe he had created a new, transuranic element, which was dubbed hesperium.
But in 1938, German chemists Otto Hahn and Fritz Strassmann, along with Austrian physicist Lise Meitner and Meitner’s nephew, Otto Robert Frisch, conducted experiments with the products of neutron-bombarded uranium, as a means of further investigating Fermi’s claims. They determined that the relatively tiny neutron split the nucleus of the massive uranium atoms into two roughly equal pieces, contradicting Fermi. This was an extremely surprising result: all other forms of nuclear decay involved only small changes to the mass of the nucleus, whereas this process—dubbed “fission” as a reference to biology—involved a complete rupture of the nucleus. Numerous scientists, including Leó Szilárd, who was one of the first, recognized that if fission reactions released additional neutrons, a self-sustaining nuclear chain reaction could result. Once this was experimentally confirmed and announced by Frédéric Joliot-Curie in 1939, scientists in many countries (including the United States, the United Kingdom, France, Germany, and the Soviet Union) petitioned their governments for support of nuclear fission research, just on the cusp of World War II, for the development of a nuclear weapon.

In the United States, where Fermi and Szilárd had both emigrated, this led to the creation of the first man-made reactor, known as Chicago Pile-1, which achieved criticality on December 2, 1942. This work became part of the Manhattan Project, which made enriched uranium and built large reactors to breed plutonium for use in the first nuclear weapons, which were used on the cities of Hiroshima and Nagasaki.

After World War II, the prospects of using “atomic energy” for good, rather than simply for war, was advocated as a reason not to keep all nuclear research controlled by military organizations. However, most scientists agreed that civilian nuclear power would take at least a decade to master, and the fact that nuclear reactors also produced weapons-usable plutonium created a situation in which most national governments (such as those in the United States, the United Kingdom, Canada, and the USSR) attempted to keep reactor research under strict government control and classification. In the United States, reactor research was conducted by the U.S. Atomic Energy Commission, primarily at Oak Ridge, Tennessee, Hanford Site, and Argonne National Laboratory.

Work in the United States, United Kingdom, Canada, and USSR proceeded over the course of the late 1940s and early 1950s. Electricity was generated for the first time by a nuclear reactor on December 20, 1951, at the EBR-I experimental station near Arco, Idaho, which initially produced about 100 kW. Work was also strongly researched in the US on nuclear marine propulsion, with a test reactor being developed by 1953 (eventually, the USS Nautilus, the first nuclear-powered submarine, would launch in 1955). In 1953, US President Dwight Eisenhower gave his “Atoms for Peace” speech at the United Nations, emphasizing the need to develop “peaceful” uses of nuclear power quickly. This was followed by the href=”″>1954 Amendments to the Atomic Energy Act which allowed rapid declassification of U.S. reactor technology and encouraged development by the private sector.




This entry was posted in Latest News, Uncategorized. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *


* Copy This Password *

* Type Or Paste Password Here *

11,206 Spam Comments Blocked so far by Spam Free Wordpress

44 − = 38

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>


News Letter

एसएससी सीपीओ 2018 संपूर्ण जानकारी (हिंदी) : अधिसूचना, पाठ्यक्रम प्रिय उम्मीदवार, यहां एसबीपी कोचिंग आपको सबसे हाल ही में घोषित कर्मचारी चयन आयोग (पुरुष / महिला), उप-निरीक्षक (जीडी) और एएसआई (कार्यकारी) को सूचित करना चाहेंगे कि पद के लिए पात्र उम्मीदवारों की भर्ती के लिए अखिल भारतीय स्तर की परीक्षा आयोजित की जाती है। उप-निरीक्षक (पुरुष / महिला), उप-निरीक्षक (जीडी) और … Read More

Important Question Of The Day

    Q.(1) Every year which day is celebrated on 20th October?

    (A) World Statistics Day

    (B) World Heart Day

    (C) World Diabetics Day

    (D) World Health Day

    ANS: A

    Q.(2) With India which country to participate in first-ever tri-services military exercise?

    (A) Pakistan

    (B) Russia

    (C) Nigeria

    (D) Iran

    ANS: B

    Q.(3) According to ACI-ASQ Survey, which airport got first rank in the category of 2-5 million passengers?

    (A) Srinagar

    (B) Delhi

    (C) Jaipur

    (D) Mumbai

    ANS: C

    Q.(4) Who is appointed as World Business Council for Sustainable Development Chairman from 2018?

    (A) Sunny Verghese

    (B) John Willaims

    (C) Peter James

    (D) Leo Haltman

    ANS: A

    Q.(5) Which state Government rolls out new Tourism policy?

    (A) Goa

    (B) Tamil Nadu

    (C) Assam

    (D) Kerala

    ANS: C

    Q.(6) Who had won 2017 Young Scientist Challenge for water contamination detection device?

    (A) Nitisha Rao

    (B) Gitanjali Rao

    (C) Shreesha kumar

    (D) Dinisha Madhuri

    ANS: B

    Q.(7) Which country displaced India from top position of the ICC ODI championship?

    (A) South Africa

    (B) Australia

    (C) West Indies

    (D) Sri Lanka

    ANS: A

    Q.(8) What is the name of an American chess grandmaster, who recently passed away?

    (A) Georgy Arzumanian

    (B) Vladislav Artemiev

    (C) David Arutinian

    (D) William James Joseph Lombardy


    Q.(9) Which state govt has approved hike in income limit of OBCs?

    (A) Maharashtra

    (B) Assam

    (C) Punjab

    (D) Goa

    ANS: C

    Q.(10) Who of the following are the authors of the book “A to Z of Financial Management in Autonomous Institutions”?

    (A) Dr. Rajat Bhargava and Shri Bhargav Pathak

    (B) Dr. Rajat Bhargava and Shri Deenanath Pathak

    (C) Dr. Rajat Bhargava and Shri Sahil Pathak

    (D) None of these

    ANS: B