Nuclear Power-> Nuclear Power Plant-> Types of Reactors-> CANDU - Heavy water reactor. The EC6 reactor design benefits from the proven principles and characteristics of the CANDU 6 design and decades of operation. The pressure tubes of the fuel element are horizontal and permit refueling while the reactor is in operation. The CANDU reactor design (or PHWR – Pressurized Heavy Water Reactor) has been developed since the 1950s in Canada, and more recently also in India. The initial construction costs of nuclear power plants are large. One of the main advantages of CANDU reactors are that, Nuclear reactors are clean. AECL has over 20 ye0ars experience in development and application of medium-term storage and research and The heavy water reactor pictured below is used in Canada in CANDU (Canada Deuterium Uranium) type power plant. Advantages of the CANDU design CANDU in Europe is recognized for its robustness, having more strong points than any other type of reactor. They comprise nearly 1/10 th of all nuclear reactors in the world. – No need for special borated casks • It has few (7) different components. These reactors are heavy water cooled and moderated pressurized water reactors. CANDU-specific features and advantages Use of natural uranium as a fuel CANDU is the most efficient of all reactors in using uranium: it uses about 15% less uranium than a pressurized water reactor for each megawatt of electricity produced Advantages Disadvantages The direct cycle simplifies the heat exchange system. Proven CANDU strengths include: Two independent safety shutdown systems Instead of using a single large reactor vessel as in a PWR or BWR, the … Nuclear power is one of the few reliable energy sources that can reduce greenhouse gas emissions. CANDU’s ability to utilize unrefined and waste uranium products, coupled with the promise of thorium provides the Canadian reactor design with key advantages. ... (which leads to a marked preference for the CANDU reactor type due to special features of that type). Advantages of Nuclear Energy Relatively Low Costs. One fuel bundle lasts for a year or two. The CANDU 6 reactor design has been chosen as a reference and a brief description of its main components with typical design parameters follows with a comparison with the CANDU 9 reactor. • CANDU fuel is much cheaper than light water reactor ffuel uel • CANDU fuel-manufacturing capability can readily be developed by even small ccountries ountries which purchase CANDU reactors. CANDU-specific features and advantages Use of natural uranium as a fuel CANDU is the most efficient of all reactors in using uranium: it uses about 15% less uranium than a pressurized water reactor for each megawatt of electricity produced • The CANDU fuel bundle is short and easy to handle. CANDU kills-two-birds-with-one-stone, helping assuage Beijing’s budgetary and pollution-related concerns. 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