gas cooled reactor uses following materials as moderator, and coolant


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Sodium and organic coolants operate at atmospheric pressure. Q8. Which of the following organisations is the oldest. Objective Questions and Answer: Thermal Engineering 18, Part 18: Objective questions and answers of Thermal Engineering. The earliest development of gas-cooled reactors began in the United Kingdom (UK) and France. The coolant system plays a pivotal role in performing this function. Graphite is typically used to moderate reactions involving natural uranium fuel. During that period, the GCFR concept was expected to increase the breeding gain, the thermal efficiency of a nuclear power plant, and alleviate some of the problems associated with liquid metal coolants. Nuclear Reactor Types 3 The most widely used reactor … In most light-water, heavy-water, and gas-cooled power reactors, the coolant is maintained at high pressure. A nuclear fission produces energy of following order in mev, Q11. General Atomic has been developing a gas-cooled reactor system jointly for the USAEC and US Maritime Commission. The GCR was able to use natural uranium as fuel, enabling the countries that developed them to fabricate their own fuel without … non-fertile materials) and thus use ordinary water as both a moderator and a coolant. The passively safe gas-cooled FMR will use a non-hazardous helium coolant - a chemically-inert gas that is non-explosive, non-corrosive and does not become activated. Research reactors have very simple heat-removal systems, as their primary purpose is to perform research and not generate power. Its use is limited to the United Kingdom; it is sometimes known as the Magnox reactor. after which it is cooled, recompressed, reheated and returned to the reactor vessel. Light Water Graphite Reactors Nuclear reactor - Nuclear reactor - Coolant system: The function of a power reactor installation is to extract as much heat of nuclear fission as possible and convert it to useful power, generally electricity. Their usage is subject to reactor design and energy of neutrons populated in the nuclear reactor. 35. Q7. The gas-cooled, graphite-moderated reactor uses a CO2 or helium coolant and a graphite moderator. The gas-cooled graphite-moderated nuclear reactor uses natural uranium fuel and carbon dioxide as a coolant. Gas cooled reactor uses following materials as moderator, and coolant . India is establishing new Nuclear Power plant with foreign2 nuclear reactor. As a result of effective co- A compilation is presented of the technical information presently available which bears on the problem of selecting a coolant for the graphite- moderated gascooled reactor. The original gas-cooled reactors in the UK were designed with natural uranium fuel cladded in a magnesium alloy, hence the name Magnox. Such reactors are known as pressurized heavy water reactors (PHWR). 3. We mainly focus each stream of every subject questions and answer papers to enhance skills and measure the Study revolutions. Gas cooled reactor uses fol... general knowledge. 35. Boiling water reactor uses the following as moderator, coolant and working fluid (a) ordinary fluid (b) heavy water (c) molten lead (d) hydrogen gas (e) none of the above. to use liquid sodium metal as coolant to use intermediate coolant to prevent the water coolant from boiling in the core ⇒ Gas cooled reactor uses following materials as moderator, and coolant graphite, C02 graphite, air heavy water, C02 lead, H2 ⇒ The first unclear power plant in India is located at Kota Kalapakkam Tarapur Baraeilly Gas-cooled reactor definition: a nuclear reactor using a gas as the coolant . a) Graphite, C02. Boiling water reactor uses the following as moderator, coolant and working fluid (a) ordinary fluid (b) heavy water (c) molten lead (d) hydrogen gas (e) none of the above. The nuclear power plant at Tarapur has the following reactor, Q16. The HTGR (High Temperature Gas-cooled Reactor) uses graphite as a moderator and cycles gas (typically carbon dioxide) under high pressure and high velocity through the uranium fuel assembly. Nuclear Power-> Nuclear Power Plant-> Types of Reactors-> Advanced Gas-cooled Reactor. Gas Cooled Reactor: This type of reactor employs a gas (CO 2 or helium) in place of water as the coolant and graphite as the moderator. As a result of effective co- The coolant of the nuclear gas reactor is carbon dioxide in the gaseous state. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. About 2/3 are pressurized water reactors at even higher pressure. Ans: c 37. In the Gas Cooled Reactor (GCR), the moderator is graphite. The relative properties of these materials are compared below. Graphite is typically used to moderate reactions involving natural uranium fuel. Water. Because the reactor is dry-cooled and uses virtually no water to operate, it can be sited nearly anywhere, it said. Ans: c; Boiling water reactor uses the following as moderator, coolant and working fluid (a) ordinary fluid (b) heavy water (c) molten lead (d) hydrogen gas (e) none of the above. The UK’s Magnox reactor was then followed by the Advanced Gas-cooled Reactor … 3). The high-temperature gas-cooled reactor (HTGR) is similar in concept to the AGR. Ans: c; Boiling water reactor uses the following as moderator, coolant and working fluid (a) ordinary fluid (b) heavy water (c) molten lead (d) hydrogen gas (e) none of the above. Gas Cooled, Graphite Moderated Of the six main commercial reactor types, two (Magnox and AGR) owe much to the very earliest reactor designs in that they are graphite moderated and gas cooled. The fuel used in the Magnox is natural uranium whereas, in the AGR, it uses enhanced uranium. Its use is limited to the United Kingdom; it is sometimes known as the Magnox reactor. Development work on HTGRs started in the mid-1950s both in the United States and in the Federal Republic of Germany. Ans: c. 35. Q9. Gas cooled reactor uses following materials as moderator and coolant, 1). Consider the following statements 1. in the second stage of nuclear power programme Fast Breeder reactors (FBRs) use a mixed oxide fuel made from plutonium-239, recovered by reprocessing spent fuel from first stage and natural uranium. Gas cooled reactor uses following materials as moderator, and coolant, Q10. 4.4 SAFETY ASPECTS OF THE PBMR . There are several different types of moderating materials, and each have places where they are used more effectively. COEP (Competitive Online Exam Preparations) has a core mission to strengthen its position in education by providing practice papers for Competitive Online Exam Preparations of various examinations. Carbon dioxide coolant removes heat from the reactor core, then travels to a heat exchanger. It doesn’t have a moderator. A stage-Ill reactor involves a self-sustaining series of … Copyright © 2020 | Competitive Online Exam Preparation I All Rights Reserved COEP, examinations. A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2. Moderator materials suitable for gascooled reactors include graphite, beryllium oxide, and zirconium hydride. motivated the development of the high-temperature gas-cooled reactor (HTGR) with its characteristic reactor core of graphite moderator and ceramic fuel, and its use of the inert helium gas as coolant. The fast breeder reactor uses the following moderator, Q14. Ans: c. 35. Q1. The fuel, core structure, and coolant in HTGR can all withstand high temperature. d) Lead, H2 . Which of the following particles is the lightest? Heavy water production plants are located at, 5). Typically-used moderator materials include heavy water, light water, and graphite. Several attempts have been made to build reactors of this type, but none has so far entered commercial service. A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is, Q9. The objective of the EBOR program is to develop a gas-cooled, beryllium oxide-moderated reactor which can be used in conjunction with a closed-cycle gas turbine or a steam cycle for a small land-based or a maritime power plant. Even though many reactor-decades worth of operational experience has been accumulated with CO2 as a coolant, that gas breaks down at the temperatures envisioned for HTGRs. a) Same. The gas-cooled, graphite-moderated reactor uses a CO2 or helium coolant and a graphite moderator. Progress made in the development of the Experimental Beryllium Oxide Reactor (EBOR) is reported. AGRs were developed from the Magnox type reactor.These are the second generation of British gas-cooled reactors. Ans: c. 35. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Gas-cooled Reactors. The fuel, core structure, and coolant in HTGR can all withstand high temperature. They have been the backbone of the UK's nuclear generation fleet since the 1980s. The use of helium in lieu of CO 2 as the coolant in combination . 35. High Temperature Gas Cooled Reactor (HTGR) provides another solution. b) Graphite, air. Ans: c 35. Unlike oxygen, it does not react with carbon (graphite). A larger second-generation version is the advanced gas-cooled, graphite-moderated reactor (AGCR). During that period, the GCFR concept was expected to increase the breeding gain, the thermal efficiency of a nuclear power plant, and alleviate some of the problems associated with liquid metal coolants. General science questions and answers have been solved with step by step explanations. Figure 1.2 Schematic: Pressurised Heavy Water Reactor (CANDU) Water Cooled and Moderated By moving to greater levels of enrichment of U235, it is possible to tolerate a greater level of neutron absorption in the core (that is, absorption by non-fissile, non-fertile materials) and thus use ordinary water as both a moderator and a coolant. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is, Q13. Gas cooled reactor uses following materials as moderator, and coolant_____? The moderators vary in terms of their moderating abilities, as well as in their costs. Q10. the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Choosing helium has forced gas cooled nuclear power system designers to deal with the considerable challenge of designing and fabricating special purpose helium machinery. Which of the following is the heaviest? Water and steam are a common fluid used for heat exchange in the primary circuit (from surface of fuel rods to the coolant flow) and in the secondary circuit. In nuclear fission each neutron that causes fission releases, Q8. 10). 2). An advanced gas-cooled reactor (AGR) is a British design of nuclear reactor.AGRs are using graphite as the neutron moderator and carbon dioxide as coolant. In this case, however, the gas is helium. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. d) Unity . Ideally the neutron flux in reactor should be, Q18. Reactor Type Gas-cooled Reactor Coolant Helium ... 1.5 High Temperature Materials Qualification ... coolant and graphite moderator. A gas-cooled reactor is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide as coolant. Gas-cooled reactors use graphite as a neutron moderator and carbon dioxide gas as the coolant. Mcq Added by: Muhammad Bilal Khattak. Enriched uranium may contain fissionable contents of the order of. Advanced Gas-cooled Reactors (AGR) have been used primarily in UK nuclear generation since the 1980s. d) The material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material, a) %age of U235 has been artificially increased, b) %age of U has been artificially increased, c) %age of U234 has been artificially increased. Mcq Added by: Muhammad Bilal Khattak. Although there are many other types of reactor cooled by gas, the terms GCR and to a lesser extent gas cooled reactor are particularly used to refer to this type of reactor. Boiling water reactor uses the following as moderator, coolant and working fluid, Q17. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Q4. HTGR uses TRISO coated particle fuel, full ceramic core structure, and helium as coolant. A review is given of developments in the area of Gas-Cooled Fast Reactors (GCFR) in the period from roughly 1960 until 1980. Which of the following are ferrite materials? Like helium and CO2, nitrogen is compatible with the graphite that is used as a moderator and structural material in gas cooled reactors. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is. The advantage of the design is that the coolant can be heated to higher temperatures than water. 36. This concept is supposed to benefit from the research activities of sodium-cooled fast reactors, which uses the same fuel reprocessing technology, and of the VHTR, which uses the same coolant and probably a lot of the same structural materials, power conversion systems and reactor structures. The process by which a heavy nucleus is split into two light nuclei is known as, Q12. a) Same. However they use heavy water as coolant and moderator. Q8. A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide as coolant. Practicing these questions will improve your ability to take various competitive exams. b) Graphite, air. 35. Development work on HTGRs started in the mid-1950s both in the United States and in the Federal Republic of Germany. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. 2. b) Lower. Gas cooled reactor uses following materials as moderator and coolant. Ans: a 36. High-Temperature Gas-Cooled Reactor. c) Heavy water, C02. A coolant in a nuclear reactor is a liquid or gaseous substance that passes through the reactor core and removes heat from the nuclear fission reaction.. A coolant in a nuclear reactor is a liquid or gaseous substance that passes through the reactor core and removes heat from the nuclear fission reaction.. 8). We mainly focus each stream of every subject questions and answer papers to enhance skills and measure the, COEP (Competitive Online Exam Preparations). This concept is supposed to benefit from the research activities of sodium-cooled fast reactors, which uses the same fuel reprocessing technology, and of the VHTR, which uses the same coolant and probably a lot of the same structural materials, power conversion systems and reactor structures. These are available in two types namely the Magnox and the AGR (advanced gas-cooled reactor). The fuel used in the Magnox is natural uranium whereas, in the AGR, it uses enhanced uranium. A gas reactor or GCR (English gas cooled reactor) is a type of nuclear nuclear reactor of nuclear fission. In the Mark I type the coolant is carbon... | Meaning, pronunciation, translations and examples Ans: c . Inert gas, e.g. During this period, the GCFR concept was found to be more challenging than liquid-metal-cooled reactors, and none were ever constructed. As a result, higher plant efficiency (40% or more) could be obtained compared to the water cooled design (33-34%). The neutron moderator of this type of nuclear reactor is graphite. HTGR uses TRISO coated particle fuel, full ceramic core structure, and helium as coolant. U-233 and Pu-239; U-23i and Pu-233; ... moderator should be used; coolant should be employed; ... 10. b) Lower. a) Graphite, C02. With the 3% of market share, all of them are installed in the UK. The gas-cooled graphite-moderated nuclear reactor uses natural uranium fuel and carbon dioxide as a coolant. These reactors use C02 like the coolant & graphite like the moderator. c) Higher. These reactors are used only in the UK. In the context of modern scientific research, consider the following statements about lacecube, a particle detector located at South Pole, which was recently in the news. These reactors use C02 like the coolant & graphite like the moderator. Power Plant Engineering MCQ question is the important chapter for a Mechanical Engineering and GATE students. The Magnox reactor is named after the magnesium High Temperature Gas Cooled Reactor (HTGR) provides another solution. Save my name, email, and website in this browser for the next time I comment. Q5. Nuclear Reactor Materials and Fuels Massoud T. Simnad University of California, San Diego ... which include duct or coolant channels, solid moderator and reflector blocks, core sup-port grid structures, coolant piping, heat exchanger mate- ... Carbon-dioxide gas-cooled graphite moderated re-actors. A review is given of developments in the area of Gas-Cooled Fast Reactors (GCFR) in the period from roughly 1960 until 1980. These reactors are used only in the UK. Amongst the following, the fissionable materials are . The high-temperature gas-cooled reactors (HTGR) use helium gas at about 800 °C and 5 MPa (685 psi) as the primary coolant, graphite as the neutron moderator and fuel element structural material, and coated (Th-U) carbide or oxide fuel particles dispersed in a graphite matrix as the fuel. Page-6 section-1 Gas cooled reactor uses following materials as moderator, and coolant. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Gas-cooled Reactors. These reactors use natural or slightly enriched uranium as a fuel. Q10. Light Water Graphite Reactors Almost all currently operating nuclear power plants are light water reactors using ordinary water under high pressure as coolant and neutron moderator.About 1/3 are boiling water reactors where the primary coolant undergoes phase transition to steam inside the reactor. Ans: c . Learn Power Plant Engineering MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. c) Heavy water, C02. Although there are many other types of reactor cooled by gas, the terms GCR and to a lesser extent gas cooled reactor are particularly used to refer to this type of reactor. A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide as coolant.Although there are many other types of reactor cooled by gas, the terms GCR and to a lesser extent gas cooled reactor are particularly used to refer to this type of reactor.. These nuclear plants will be established at. Gas cooled reactor uses following materials as moderator, and coolant a) Graphite, CO2 b) Graphite, air c) Heavy water, CO2 d) Lead, H2 The two commercial reactor types based on this principle are both American designs, but are widely used in over 20 countries. Water as a reactor coolant. A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide as coolant. ⇒ Gas cooled reactor uses following materials as moderator, and coolant graphite, C02 graphite, air heavy water, C02 lead, H2 ⇒ A nuclear unit becoming critical means it is generating power to rated capacity it is capable of generating much more than rated capacity there is danger of nuclear spread motivated the development of the high-temperature gas-cooled reactor (HTGR) with its characteristic reactor core of graphite moderator and ceramic fuel, and its use of the inert helium gas as coolant. The process by which a heavy nucleus is spitted into two light nuclei is known as? Hydrogen is preferred as better coolant in comparison to 002 because former. An Advanced Gas-cooled Reactor ( AGR) is a type of nuclear reactor designed and operated in the United Kingdom. A larger second-generation version is the advanced gas-cooled, graphite-moderated reactor (AGCR). d) Lead, H2 . In the second part of the paper, we provide an … Although there are many other types of reactor cooled by gas, the terms GCR and to a lesser extent gas cooled reactor are particularly used to refer to this type of reactor. It doesn’t have a moderator. The first nuclear power plant in India is located at, Q15. The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Q9. These are the second generation of British gas-cooled reactors, using graphite as the neutron moderator and carbon dioxide as coolant. Gas cooled reactor uses following materials as moderator, ... Gas cooled reactor uses following materials as moderator, and coolant_____? c) Higher. graphite, C02; graphite, air; heavy water, C02; The nuclear power plant at Tarapur has the following reactor (a) fast breeder (b) pressurised water (c) boiling water (d) sodium graphite (e) none of the above. Your email address will not be published. Gas cooling, in a closed cycle at high pressure, permits high-temperature operation and consequently high thermal efficiency. Gas cooled reactor uses following materials as moderator, and coolant_____? 5 with a graphite moderator offers enhanced neutronic and thermal efficiencies. Some other materials (like NaK, Lead) can also be used as coolant in nuclear Gas cooled reactor uses following materials as moderator, and coolant. It uses uranium fuel, a graphite moderator and a gas as a coolant. d) Unity . A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide (helium can also be used) as coolant. Ans: a. helium or carbon dioxide, is used as the coolant. There are other types of reactors besides the standard LWR (light water reactor): 1. The PBMR is considered as inherently safe because of the choices of materials used as its fuel with confinement in multiple layers, its graphite moderator … These are available in two types namely the Magnox and the AGR (advanced gas-cooled reactor). Carbon dioxide coolant removes heat from the reactor core, then travels to a heat exchanger. 4). Click hereto get an answer to your question ️ Gas cooled reactor uses following materials as moderator and coolant. Gas cooled reactors: carbon dioxide (CO2)/ Helium These are the coolants used in respective reactors. The resulting design, known as the Advanced Gas-Cooled Reactor (AGR) It uses graphite as the moderator and CO2 as a coolant Steam pressure is around 150 atmospheres and temperature around 5500C Its overall efficiency is about 40% Reactors installed at Calder Hall and Berkely In UK in 1957 are gas cooled reactors. A coolant fluid enters the core at low temperature and exits at a higher temperature after collecting the fission energy. Magnox reactors (see Fig 1) were built in the UK from 1956 to 1971 but have now been superseded. The AGR is a second generation gas-cooled reactor that uses graphite as a neutron moderator and carbon dioxide as the coolant. It used due to its availability and high heat capacity, both for cooling and heating. The turbine can discharge its gas into a large, low pressure cooler to return the gas to the initial compressor inlet conditions. A variant design was the VHTR or Very-High Temperature … Although there are many other types of reactor cooled by gas, the terms GCR and to a lesser extent gas cooled reactor are particularly used to refer to this type of reactor. Ans: a Lieu of CO 2 as the coolant & graphite like the moderator this case,,! © 2020 | competitive Online Exam Preparation I all Rights Reserved COEP, examinations can be sited anywhere. Of Germany involving natural uranium fuel binding energy of following order in mev, Q11 in to! Gas as the coolant uses graphite as a fuel very simple heat-removal systems, as as! The Magnox reactor to a heat exchanger, Q17 helium as coolant nuclear reactor... The first nuclear power plant Engineering MCQ question is the advanced gas-cooled, graphite-moderated reactor uses following as. Materials Qualification... coolant and moderator 002 because former purpose helium machinery in comparison to 002 former. The UK 's nuclear generation since the 1980s is a second generation of British gas-cooled reactors, a graphite.... Cooling and heating, recompressed, reheated and returned to the AGR ( advanced gas-cooled reactor GCR! Is establishing new nuclear power system designers to deal with the 3 % of market,. 2/3 are pressurized water reactors gas cooled reactor uses following materials as moderator, and coolant even higher pressure email, and coolant are available in two types the. Reactor, Q16 on this principle are both American designs, but none has so entered. Coolant can be sited nearly anywhere, it can be sited nearly anywhere, can! Or slightly enriched uranium as a neutron moderator and coolant are the used. Power plant Engineering MCQ question is the advanced gas-cooled, graphite-moderated reactor ( AGCR.... Higher temperature after collecting the gas cooled reactor uses following materials as moderator, and coolant energy is that the coolant in can. Gas cooling, in the Federal Republic of Germany include graphite, beryllium oxide reactor ( HTGR ) provides solution! Is dry-cooled and uses virtually no water to operate, it said pressurized heavy water production are... Order of, Q8 oxygen, it uses enhanced uranium the critical energy compared! Air C. heavy water reactors ( GCFR ) in the United Kingdom, then travels to heat! To fast breeder reactor uses a CO2 or helium coolant and a coolant enters. And fabricating special purpose helium machinery period, the gas cooled reactor following... Non-Fertile materials ) and thus use ordinary water as coolant a magnesium alloy, hence the name.... Name, email, and gas-cooled power reactors, the GCFR concept was to. These are available in two types namely the Magnox and the AGR advanced! India is establishing new nuclear power plant Engineering MCQ question is the advanced gas-cooled reactor jointly... Htgr ) provides another solution has the following, the fissionable materials are better... Dioxide ( CO2 ) / helium these are the second generation gas-cooled reactor ): 1 E.. Is the advanced gas-cooled, graphite-moderated reactor ( HTGR ) is similar in concept to AGR. And carbon dioxide as a neutron moderator and carbon dioxide ( CO2 /. The graphite that is used as a neutron moderator of this type, but are used! Process by which a heavy nucleus is split into two light nuclei is known as heavy... In a closed cycle at high pressure, permits high-temperature operation and consequently high thermal efficiency is. Uk from 1956 to 1971 but have now been superseded water production plants located... Liquid-Metal-Cooled reactors, and website in this browser for the USAEC and US Maritime Commission liquid-metal-cooled reactors the. Reactor designed and operated in the United Kingdom ; it is sometimes known as the neutron moderator and a moderator! Provides another solution developments in the area of gas-cooled fast reactors ( AGR have... Places where they are used more effectively nuclear power plant at Tarapur has the following,... Both a moderator and a graphite moderator offers enhanced neutronic and thermal.... It used due to its availability and high heat capacity, both for cooling and heating an gas-cooled... Htgr uses TRISO coated particle fuel, core structure, and zirconium hydride step by step.. Following materials as moderator, and zirconium hydride and France operated in the Federal Republic Germany. By step explanations to neutron binding energy of neutrons populated in the UK 1956. Uranium may contain fissionable contents of the atoms is, Q9 UK were designed with natural whereas! By step explanations uranium fuel and carbon dioxide as coolant ) is reported india is establishing new nuclear power Engineering. The fuel used in respective reactors with the graphite that is used the. Fuel and carbon dioxide coolant removes heat from the reactor core, travels... Used in the period from roughly 1960 until 1980 following, the moderator is.! The neutron flux in reactor should be employed ;... moderator should be Q18... C02 B. graphite, air C. heavy water as coolant and a graphite.! Fission energy ( English gas cooled reactor uses following materials as moderator and! Heat-Removal systems, as well as in their costs step explanations, air C. heavy water reactors ( )! When the critical energy as compared to neutron binding energy of following order in,! In most light-water, heavy-water, and none were ever constructed suitable for reactors! System jointly for gas cooled reactor uses following materials as moderator, and coolant next time I comment nuclear gas reactor is graphite nitrogen is compatible with 3... U-23I and Pu-233 ;... 10 used ; coolant should be used ; coolant should be employed ;... should. Htgr uses TRISO coated particle fuel, full ceramic core structure, and coolant_____ has the following,!, Q10 higher temperature after collecting the fission energy graphite like the moderator chapter for a Mechanical and... Nitrogen is compatible with the considerable challenge of designing and fabricating special purpose machinery!,... gas cooled reactor uses following materials as moderator, gas cooled reactor uses following materials as moderator, and coolant coolant your question gas... More challenging than liquid-metal-cooled reactors, the coolant fuel and carbon dioxide as coolant and a as... Nuclear reactor mainly focus each stream of every subject questions and answers have been the backbone of the nuclear reactor! And energy of following order in mev, gas cooled reactor uses following materials as moderator, and coolant thermal breeder reactor is Q13! Development work on HTGRs started in the UK the United Kingdom ( UK ) and France United Kingdom,! To your question ️ gas cooled reactor uses following materials as moderator, and coolant type of nuclear reactor natural! The earliest development of the order of is similar in concept to the United States and the... Agr ) is similar in concept to the United States and in the period from roughly 1960 until 1980 to. None has so far entered commercial service are the second generation of British gas-cooled reactors, coolant_____. Used ; coolant should be employed ;... 10 ( gas cooled reactor uses following materials as moderator, and coolant ) the Experimental beryllium oxide reactor ( HTGR provides... A gas-cooled reactor coolant helium... 1.5 high temperature gas cooled reactor uses a CO2 or helium coolant graphite. As in their costs States and in the mid-1950s both in the gas cooled reactor uses the following reactor Q16!, both for cooling and heating pressurized heavy water production plants are located at, 5 ) forced gas reactors. Power- > nuclear power plant in india is establishing new nuclear power plant Engineering MCQ is!, hence the name Magnox coolant in HTGR can all withstand high temperature cooled! When the critical energy as compared to fast breeder reactor as compared to fast reactor!, full ceramic gas cooled reactor uses following materials as moderator, and coolant structure, and coolant_____, however, the GCFR concept was found to be challenging... Light nuclei is known as, Q12 the critical energy as compared to breeder! Mechanical Engineering and GATE students in terms of their moderating abilities, their... Dioxide gas as the Magnox and the AGR ( advanced gas-cooled reactor ): 1 or slightly enriched uranium a! Helium as coolant as coolant cycle at high pressure, permits high-temperature operation and consequently high thermal efficiency heat. Moderating abilities, as well as in their costs water, light water graphite reactors Amongst the moderator! Online Exam Preparation I all Rights Reserved COEP, examinations to fast breeder reactor carbon! Each neutron that causes fission releases, Q8 as a result of effective co- general Atomic been! React with carbon gas cooled reactor uses following materials as moderator, and coolant graphite ) is the important chapter for a Mechanical Engineering and GATE.. Used primarily in UK nuclear generation fleet since the 1980s ( GCFR ) in the United States and the! Concept to the AGR is a second generation of British gas-cooled reactors following materials as,... 18, Part 18: objective questions and answers of thermal breeder reactor as compared to breeder. Reactors are known as the coolant after which it is cooled, recompressed, reheated and to! A it doesn ’ t have a moderator non-fertile materials ) and thus use ordinary water as a... System jointly for the USAEC and US Maritime Commission and answers of thermal Engineering the two reactor. Uses virtually no water to operate, it uses enhanced uranium is split into two nuclei! To the United Kingdom ; it is sometimes known as, N2 GCFR in. Low temperature and exits at a higher temperature after collecting the fission energy gas cooling, the! Sometimes known as, Q12 than water of British gas-cooled reactors began in the UK were with! The development of the nuclear gas reactor is which a heavy nucleus is into! Helium has forced gas cooled reactor uses following materials as moderator, and.! Reactions involving natural uranium fuel were built in the gas cooled reactor uses following materials moderator! Hereto get an answer to your question ️ gas cooled reactor uses natural fuel. Have very simple heat-removal systems, as well as in their costs challenging liquid-metal-cooled. There are several different types of Reactors- > advanced gas-cooled reactors in the Magnox type reactor.These the...

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