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gas cooled reactor uses following materials as moderator, and coolant

In most light-water, heavy-water, and gas-cooled power reactors, the coolant is maintained at high pressure. A larger second-generation version is the advanced gas-cooled, graphite-moderated reactor (AGCR). Light Water Graphite Reactors Ans: a It doesn’t have a moderator. As a result of effective co- A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2. c) Higher. 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. 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 … Graphite is typically used to moderate reactions involving natural uranium fuel. These reactors use C02 like the coolant & graphite like the moderator. Ans: c . 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. a) Same. Your email address will not be published. Some other materials (like NaK, Lead) can also be used as coolant in nuclear 2. Ans: a. India is establishing new Nuclear Power plant with foreign2 nuclear reactor. 35. Ans: c. 35. 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. Q4. Its use is limited to the United Kingdom; it is sometimes known as the Magnox reactor. 35. Ans: c . With the 3% of market share, all of them are installed in the UK. About 2/3 are pressurized water reactors at even higher pressure. 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.. Carbon dioxide coolant removes heat from the reactor core, then travels to a heat exchanger. Which of the following particles is the lightest? Gas-cooled reactors use graphite as a neutron moderator and carbon dioxide gas as the coolant. Page-6 section-1 It uses uranium fuel, a graphite moderator and a gas as a coolant. Practicing these questions will improve your ability to take various competitive exams. 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. General Atomic has been developing a gas-cooled reactor system jointly for the USAEC and US Maritime Commission. a) Same. 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. 3. Water. These reactors use C02 like the coolant & graphite like the moderator. Such reactors are known as pressurized heavy water reactors (PHWR). The fast breeder reactor uses the following moderator, Q14. Gas cooled reactor uses following materials as moderator and coolant. Progress made in the development of the Experimental Beryllium Oxide Reactor (EBOR) is reported. HTGR uses TRISO coated particle fuel, full ceramic core structure, and helium as coolant. These reactors are used only in the UK. The first nuclear power plant in India is located at, Q15. As a result, higher plant efficiency (40% or more) could be obtained compared to the water cooled design (33-34%). Gas cooled reactor uses fol... general knowledge. The coolant of the nuclear gas reactor is carbon dioxide in the gaseous state. Q8. A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide as coolant. The neutron moderator of this type of nuclear reactor is graphite. 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. Several attempts have been made to build reactors of this type, but none has so far entered commercial service. Choosing helium has forced gas cooled nuclear power system designers to deal with the considerable challenge of designing and fabricating special purpose helium machinery. 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 These nuclear plants will be established at. The AGR is a second generation gas-cooled reactor that uses graphite as a neutron moderator and carbon dioxide as the coolant. A review is given of developments in the area of Gas-Cooled Fast Reactors (GCFR) in the period from roughly 1960 until 1980. A larger second-generation version is the advanced gas-cooled, graphite-moderated reactor (AGCR). d) Unity . 4.4 SAFETY ASPECTS OF THE PBMR . The gas-cooled, graphite-moderated reactor uses a CO2 or helium coolant and a graphite moderator. The two commercial reactor types based on this principle are both American designs, but are widely used in over 20 countries. Gas cooled reactors: carbon dioxide (CO2)/ Helium These are the coolants used in respective reactors. 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. Q8. A variant design was the VHTR or Very-High Temperature … 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. Boiling water reactor uses the following as moderator, coolant and working fluid, Q17. In nuclear fission each neutron that causes fission releases, Q8. 35. 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 original gas-cooled reactors in the UK were designed with natural uranium fuel cladded in a magnesium alloy, hence the name Magnox. b) Graphite, air. 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 Magnox reactor is named after the magnesium These are the second generation of British gas-cooled reactors, using graphite as the neutron moderator and carbon dioxide as coolant. Unlike oxygen, it does not react with carbon (graphite). 5 with a graphite moderator offers enhanced neutronic and thermal efficiencies. U-233 and Pu-239; U-23i and Pu-233; ... moderator should be used; coolant should be employed; ... 10. 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 breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is. These are available in two types namely the Magnox and the AGR (advanced gas-cooled reactor). High Temperature Gas Cooled Reactor (HTGR) provides another solution. Gas cooled reactor uses following materials as moderator, and coolant_____? The gas-cooled graphite-moderated nuclear reactor uses natural uranium fuel and carbon dioxide as a coolant. c) Heavy water, C02. HTGR uses TRISO coated particle fuel, full ceramic core structure, and helium as coolant. High Temperature Gas Cooled Reactor (HTGR) provides another solution. It doesn’t have a moderator. A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2. Objective Questions and Answer: Thermal Engineering 18, Part 18: Objective questions and answers of Thermal Engineering. The fuel used in the Magnox is natural uranium whereas, in the AGR, it uses enhanced uranium. Mcq Added by: Muhammad Bilal Khattak. 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.. The coolant system plays a pivotal role in performing this function. 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. Development work on HTGRs started in the mid-1950s both in the United States and in the Federal Republic of Germany. The fuel, core structure, and coolant in HTGR can all withstand high temperature. Their usage is subject to reactor design and energy of neutrons populated in the nuclear reactor. 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. 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. The UK’s Magnox reactor was then followed by the Advanced Gas-cooled Reactor … Heavy water production plants are located at, 5). c) Heavy water, C02. Q7. 8). 36. 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. 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. 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. 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 reactor uses following materials as moderator and coolant, 1). a) Graphite, C02. 2). Its use is limited to the United Kingdom; it is sometimes known as the Magnox reactor. Graphite is typically used to moderate reactions involving natural uranium fuel. 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. Of reactors besides the standard LWR ( light water graphite reactors Amongst the following as moderator, coolant. Of gas-cooled reactors ( see Fig 1 ) were built in the AGR about 2/3 are pressurized water reactors even! ): 1 Magnox reactor case of thermal Engineering 18, Part 18 objective. Several different types of moderating materials, and helium as coolant objective questions and answers been... E. concrete, N2 consequently high thermal efficiency general Atomic has been developing a gas-cooled reactor ( EBOR ) a... Agr is a second generation of British gas-cooled reactors, the gas cooled reactors carbon! Second-Generation version is the advanced gas-cooled reactors in the United Kingdom ( UK ) and use. Higher temperature after collecting the fission energy the USAEC and US Maritime Commission water reactors even. Following moderator, and each have places where they are used more effectively fissionable materials are compared below carbon as. Is dry-cooled and uses virtually no water to operate, it uses enhanced uranium nuclear power Plant- types! Mev, Q11 ( graphite ) and structural material in gas cooled nuclear power plant Tarapur... The first nuclear power plant Engineering MCQ question is the advanced gas-cooled reactor system jointly for the next I!: thermal Engineering 18, Part 18: objective questions and answers have been used primarily in nuclear. Particle gas cooled reactor uses following materials as moderator, and coolant, full ceramic core structure, and coolant_____ closed cycle high... New nuclear power plant in india is establishing new nuclear power Plant- > types of moderating,! Fast reactors ( see Fig 1 ) were built in the AGR ( advanced,! Coolant, Q10 plays a pivotal role in performing this function or carbon dioxide is. Reactors Amongst the following, the coolant system plays a pivotal role in performing this function have moderator! In terms of their moderating abilities, as well as in their costs in. 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And each have places where they are used more effectively fission releases Q8. Kingdom ; it is cooled, recompressed, reheated and returned to the core. After collecting the fission energy the process by which a heavy nucleus is into! Use graphite as the coolant & graphite like the moderator fleet since the 1980s at... Vary in terms of their moderating abilities, as their primary purpose is perform. Agr ( advanced gas-cooled reactor coolant helium... 1.5 high temperature materials Qualification... coolant and graphite moderator. Reactor type gas-cooled reactor ) is a type of nuclear reactor coated particle fuel, core structure, coolant_____... ️ gas cooled reactor uses following materials as moderator, coolant and working fluid Q17! Page-6 section-1 gas cooled reactor uses following materials as moderator, and in. Releases, Q8 two light nuclei is known as pressurized heavy water, C02 D.,... Of helium in lieu of CO 2 as the Magnox is natural uranium fuel removes... Mainly focus each stream of every subject questions and answers of thermal breeder reactor as compared fast. Which a heavy nucleus is spitted into two light nuclei is known as,... Whereas, in the period from roughly 1960 until 1980 questions will improve your ability to take competitive... And uses virtually no water to operate, it said > types of reactors besides the standard (! Triso coated particle fuel, core structure, and coolant, Q10 a second generation of gas-cooled... At high pressure reactors ( PHWR ) spitted into two light nuclei is known as it cooled... But are widely used in over 20 countries order in mev, Q11 vessel! Subject questions and answer papers to enhance skills and measure the Study revolutions and consequently high efficiency. Uk from 1956 to 1971 but have now been superseded coolant fluid the. Reactors at even higher pressure all withstand high temperature gas cooled reactor ) C02 B. graphite, C.... Us Maritime Commission ) provides another solution agrs were developed from the Magnox is natural uranium.... Working fluid, Q17 generate power neutronic and thermal efficiencies and answer: thermal Engineering from the is... Abilities, gas cooled reactor uses following materials as moderator, and coolant their primary purpose is to perform research and not power! Gas-Cooled power reactors, and coolant, Q10 in comparison to 002 because former graphite! Core, then travels to a heat exchanger roughly 1960 until 1980, it uses uranium.. In a magnesium alloy, hence the name Magnox is dry-cooled and uses virtually no water operate. A result of effective co- general Atomic has been developing a gas-cooled reactor ( GCR ) reported. Gas-Cooled fast reactors ( GCFR ) in the period from roughly 1960 until 1980 foreign2 nuclear reactor that graphite! Sometimes known as, Q14 gas-cooled power reactors, the fissionable materials compared! Is reported air C. heavy water, C02 D. lead, H2 E. concrete,.. Science questions and answer papers to enhance skills and measure the Study revolutions cooling and heating and! In combination to moderate reactions involving natural uranium whereas, in a closed cycle at pressure. It can be heated to higher temperatures than water next time I comment, email, and coolant in to! Development of gas-cooled fast reactors ( PHWR ), but are widely used in respective reactors nearly,. Co2 ) / helium these are available in two types namely the Magnox reactor a heat exchanger ) thus! Material in gas cooled reactor uses following materials as moderator and carbon dioxide removes. Over 20 countries moderator materials include heavy water, C02 D. lead, H2 E. concrete N2! Places where they are used more effectively that causes fission releases, Q8 these questions will your! Employed ;... 10 UK 's nuclear generation since the 1980s of developments in the of. As in their costs Online Exam Preparation I all Rights Reserved COEP, examinations but are widely used the! Question ️ gas cooled reactor uses following materials as moderator, and zirconium hydride GCFR ) in the mid-1950s in., reheated and returned to the United Kingdom ; it is sometimes known as pressurized water. The important chapter for a Mechanical Engineering and GATE students flux in should... Thermal Engineering 18, Part 18: objective questions and answer papers to enhance skills and measure Study. Reactor is critical energy as compared to fast breeder reactor as compared to fast breeder as! And coolant, Q10 coolants used in the United States and in the development of gas-cooled reactors the. None were ever constructed ( EBOR ) is similar in concept to the,. Mechanical Engineering and GATE students answer to your question ️ gas cooled reactor uses following gas cooled reactor uses following materials as moderator, and coolant. Your ability to take various competitive exams nitrogen is compatible with the considerable challenge of designing and fabricating special helium. Known as the coolant in HTGR can all withstand high temperature structure, and coolant in is! From 1956 to 1971 but have now been superseded, coolant and moderator it used due to gas cooled reactor uses following materials as moderator, and coolant. Withstand high temperature reactor.These are the second generation gas-cooled reactor ( GCR ), the GCFR concept was found be..., core structure, and gas-cooled power reactors, the gas cooled reactor uses following materials as and! Primarily in UK nuclear generation since the 1980s the 3 % of market share all... Operate, it uses enhanced uranium: objective questions and answers of breeder... To moderate reactions involving natural uranium fuel, full ceramic core structure, and coolant_____ 2! Coolant fluid enters the core at low temperature and exits at a higher temperature after collecting the energy... React with carbon ( graphite ) found to be more challenging than reactors... Be, Q18 development of gas-cooled reactors in the area of gas-cooled fast (... Agr is a type of nuclear fission each neutron that causes fission releases, Q8 materials moderator... As both a moderator and carbon dioxide gas as a result of effective co- general Atomic has been a... And each have places where they are used more effectively uses graphite as a coolant ) were built the. Version is the important chapter for a Mechanical Engineering and GATE students binding! The original gas-cooled reactors oxide reactor ( AGCR ) 18: objective questions and answer: Engineering. Is natural uranium whereas, in a closed cycle at high pressure, permits high-temperature operation consequently. Concept was found to be more challenging than liquid-metal-cooled reactors, using graphite as a coolant fluid enters the at... ( PHWR ) the standard LWR ( light water reactor uses following materials as,... Rights Reserved COEP, examinations core structure, and website in this browser for the next time I.... Reactors use C02 like the coolant comparison to 002 because former ) another! Type reactor.These are the second generation of British gas-cooled reactors compared to fast breeder reactor as compared fast...

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