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    • In a typical commercial boiling water reactor (Fig 3): 1. The major components of these reactors are fuel, metal cladding, the reflector, control rods, the moderator, reactor pressure vessel, and structural materials to provide support. [1] BWR containment buildings. Boiling Water Reactors. A steam-water mixture is produced when very pure water (reactor coolant) moves upward through the core, absorbing heat. In a typical design concept of a commercial BWR, the following process occurs: The core inside the reactor vessel creates heat. In a BWR, ordinary water acts as both coolant and moderator. C. The coolant water is pressurised to prevent boiling of water in the core. Steam is thus produced in the reactor under pressure, and can be used to drive a turbine. Thus light water can only be used as a moderator along with enriched fuels. There are boiling-water reactors of the vessel and tube types. Pressurized Water Reactor (PWR) Boiling Water Reactor (BWR) Pressurized Water Reactor (PWR) power plants consist of two loops—(i) primary loop or coolant loop that takes away heat from reactor, and (ii) secondary loop or working fluid loop that drives the turbine. D. None of the above Unlike the pressurized water reactor , it does not have a steam generator. types of reactor . Heavy water boiling water reactor. In the boiling water reactor (BWR), the water which passes over the reactor core to act as moderator and coolant is also the steam source for the turbine. In boiling water reactor, moderator is (a) coolant itself (b) ferrite rod (c) graphite rod (d) liquid sodium metal (e) blanket of thorium. Light Water Reactors (LWRs) make up 80% of the nuclear reactors in the world [1]. Modern boiling water reactors (BWRs) have no steam generators, so that the reactor coolant system is more compact than that of pressurized water reactors (PWRs).The containment building can be correspondingly smaller. In the boiling water reactor the same water loop serves as moderator, coolant for the core, and steam source for the turbine.. Boiling water reactors (BWRs) There were 92 BWRs operating in nine countries, of which Japan and the United States account for 64. Ans: a. 85. The two most common types of LWRs are the Boiling Water Reactor (BWR) and Pressurized Water Reactor (PWR). The coolant is kept at a lower pressure than in a PWR (about 7 MPa or 1 000 psi) allowing the coolant to boil as it receives heat from the reactor. The coolant water boils in the core of the reactor. Separation of the water-steam mixture takes place either inside the reactor vessel or in external drum separators. Question: (b) The Reactor Pressure Vessel (RPV) Of A Boiling-water Nuclear Reactor Is A Cylinder Of Diameter 5 M, With Hemispherical End Caps, And Overall Length 16 M. The RPV Operates At 7 MPa, And The Mean State Of The Water In The Vessel Is Saturated At 12% Quality. Drywell and Wetwell in BWR Containments. Typical Boiling-Water Reactor. In vessel-type reactors, water is also the moderator, whereas in tube-type reactors the boiling occurs in tubes located within the moderator blocks. The most important feature of the Boiling Water Reactor (BWR) is that it uses light water (ordinary water) as a neutron moderator and a core coolant. Printable Version. Boiling Water Reactor. Their collaboration was called JUICe (Japan, UK, Italy and Canada Exchange). How Nuclear Reactors Work. Reactors that use light water are known as light water reactors and include the pressurized water reactor (PWR), the boiling water reactor (BWR), and the supercritical water cooled reactor (SCWR). I think here also, you want to explore something like the Advanced Thermal Reactor concept developed in Japan. The most practical fuel for a thermo-nuclear reactor, both from econocical and nuclear consideration is (a) plutonium (b) uranium (c) deuterium (d) thorium A boiling water reactor is a nuclear reactor in which water is used as a coolant and moderator. Ina pressuried water reactor (PWR)..... A. The reactor … B. This type of light water reactor has a … The coolant water is pressurised to work as moderator.

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