Advantages of nuclear submarine. The reactor vessel may be built to withstand low pressure, therefore, the cost of the vessel is less. Advantages . Nuclear breeding does not take place in thermal reactors. The major advantage of this reactor is that the fuel need not be enriched. The disadvantages of nuclear fission energy are more perceived than ...The so-called fast-breeder reactor design, which will likely be ... Energy for America: we can achieve energy independence for the 21st century without destroying the environment. The main advantage of the nuclear submarine is that the nuclear submarine is not required … Breeder reactors achieve this because their neutron economy is high enough to create more fissile fuel than they use, by irradiation of a fertile material, such as uranium-238 or thorium-232 that is loaded into the reactor along with fissile fuel. “Fast breeder reactors are capable of generating more fissile material than consumed,” said Val Aleyaseen, process systems engineer with Candu Energy Inc. in a previous article. Advantages and disadvantages of HWR (or) CANDU type Reactor . Boiling Water Reactors - Advantages and Disadvantages - Advantages. The nuclear reactor is the air tight enclosed space where in uranium atoms split to generate enormous amount of energy, When the uranium atoms split, they release the massive energy along with the radiation & the heat, This released heat can propel the submarine.. A breeder reactor is a nuclear reactor that generates more fissile material in the fuel than it consumes. 3. In order to protect against gamma radiations, a shield is provided made of lead or concrete or of other materials. In fast breeder reactors, neutron shielding is provided by the use of boron or graphite. Depending on the Breeding Ratio of a reactor, it can produce new fuel at a greater or lesser rate. A breeder reactor is a nuclear reactor that generates more fissile material than it consumes. Advantages. Fast reactor fuels are usually 15 – 20% enriched. This special type of reactor is designed to extend the nuclear fuel supply for electric power generation. Nuclear breeding occurs in fast breeder reactors (FBR), where a portion of fertile material gets converted into fissile materials (and thus produce more fuel). This can reduce dependency on inadequately available U-235. The reactor vessel and associated components operate at a substantially lower pressure (about 75 times atmospheric pressure) compared to a PWR (about 158 times atmospheric pressure). The Breeding Ratio represents the number of new fissile atoms created for each fission event. Breeder reactor, nuclear reactor that produces more fissionable material than it consumes to generate energy. Considered highly attractive because of their superior fuel economy: a normal reactor consumes less than 1% of the natural uranium that starts the fuel cycle, while a 'breeder' can burn it almost completely. A Breeder reactor is a type of nuclear reactor that “breeds” or make more fissile material than it uses by using neutrons to convert fertile materiel into fissile material. No control rods are required, therefore, control is much easier than other types. See Also: Types of Nuclear Reactors Advantages of Fast Breeder Reactor : 2. 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