The 700 MWe Indian PHWR has steel-lined containment to reduce the leakages and containment spray system to reduce the containment pressure in case of a loss of coolant accident and for scrubbing radio nuclides in case of their release beyond the design limit. Latest top 50 UPSC March month 2017 | Current Affairs current affairs are published in question and answer format which are reviews from Hindu, you can also download PDF file. This water gets heated and reaches a higher temperature and then it is used for exchanging heat with a secondary low pressure water system which gets converted into steam which is used for driving a steam turbine for generating electricity. Which has been adopted right from the beginning of the Indian programme is not only in multiplying the fuel resource but also in reducing the radio-active burden of the nuclear waste dramatically. Above Village Hyper Market, Chandralyout Main Road, Light Water Reactors use water as both and a coolant method and a neutron moderator that reduces the speed of fast moving neutrons (eg. KAPS-1&2 consists of two Units of Pressurized Heavy Water Reactor of 220 MWe each. The use of heavy water as the moderator is the key to the PHWR (pressurized heavy water reactor) system, enabling the use of natural uranium as the fuel (in the form of ceramic UO2), which means, The mechanical arrangement of the PHWR, which places most of the moderator at lower temperatures, is particularly efficient because the resulting thermal neutrons are “more thermal” than in traditional designs, where the moderator normally is much hotter. To access the same, a google account is a must. Prelims: General Science. Boiling Water Reactor Water is used as coolant, steam source and moderator. A pressurized water reactor (PWR) is a type of light-water nuclear reactor.PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being Japan and Canada). Mastering the entire fuel cycle including prospecting of minerals, mining, processing and manufacturing of fuel and structural materials, reprocessing of spent nuclear fuel and immobilization of radioactive waste has. Stage I Pressurized Heavy Water reactor (PHWR) The first stage of India's nuclear power programme was based on uranium fuelled pressurized heavy water reactors for producing electricity. Call or WhatsApp us for plus subscription - 8727053008 / Use code - RANK10 for Discount & Mentorship. Ingersoll, in Handbook of Small Modular Nuclear Reactors, 2015. 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This results in a distribution of pressure boundaries to large number of small diameter pressure tubes. The Pressurized Heavy Water Reactor (PHWR-220) is a 235 MWe pressure-tube type reactor derived from the Canadian CANDU design. ; Heavy water contains an isotope of hydrogen called deuterium. Criticality is first step towards power production. Later Event: December 16. These features mean that a PHWR can use natural uranium and other fuels. Stage I – Pressurized Heavy Water Reactor [PHWR] In the first stage of the programme, natural uranium fuelled pressurized heavy water reactors (PHWR) produce electricity while generating plutonium-239 as by-product. Heavy water reactors: These reactors uses heavy water i.e. About: Pressurized Heavy Water Reactor (PWHR) A pressurized heavy water reactor (PHWR) is a nuclear power reactor, that uses unenriched natural uranium as its fuel, and uses heavy water (deuterium oxide D2O) as its coolant and moderator. 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