in a pressurized water reactor mcq

Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has (A) High neutron absorption cross-section (B) Low moderating efficiency (C) High neutron scatter cross-section (D) Low neutron absorption cross-section. The fuel consists of uranium dioxide pellets loaded in metal fuel rods placed in a square array called a fuel assembly. Pressurized water in the primary coolant loop carries the heat to the steam generator. With over 35 years of design experience, and thousands of fission chambers installed, we have a unique track record of excellent operational performance in some of the harshest environments. 1.2. A pressurized water reactor employs pressurizer for the following application. The pressurized water reactor is a type of nuclear reactor.This type of reactor's main characteristic is that the water uses high pressure in the primary circuit to prevent it from boiling. Pressurized Water Reactor (PWR) Thermo-Hydraulic Model: Mass, momentum and energy balance for fluid Challenges: • Nonlinear coupled PDE with nonphysical parameters due to closure relations; • CASL code: COBRA (CTF) • COBRA is a sub-channel code, which cannot be resolved between pins. The primary coolant of pressurized water reactor (PWR) nuclear power plant (NPP) is borated and lithiated solution with temperature of 292–327 °C and pressure of 15.5 MPa, and the secondary coolant is water with temperature of 180–291 °C and pressure of 1–7.6 MPa. In Sodium-Graphite reactor, sodium is used as. A pressurized-water reactor coolant treatment system continuously removes a portion of the coolant circulating in the main coolant loop and passes it through a gas separator and a rectification column, among other equipment, and returns the coolant to the main coolant loop. PWRs operate for 18 to 24 months between refueling outages. Antonyms for Pressurized water reactor (PWR). However, it is expected to be a more serious part of any nuclear discussion this time. What are synonyms for Pressurized water reactor … Nuclear Science and Engineering: Vol. Typical Pressurized-Water Reactor. It is currently the most widely used type of nuclear reactor in nuclear power plants worldwide. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being Japan and Canada). They are located in primarily the USA, Europe and eastern Asia. Q14. One stage causes the mixture to spin, which slings the water to the outside. The said nuclear power plant receives controversy. Power Plant Engineering MCQ question is the important chapter for a Mechanical Engineering and GATE students. Q15. of Science and Technology (UNIST) for designing the cores of pressurized water reactors (PWR) and performing analyses with high accuracy and computational performance by adopting state-of-the-art calculation models and various engineering features. A recently-concluded IAEA technical cooperation (TC) project, designed to support countries as they adopt and streamline these innovations into their national power programmes, has shared specific technical knowledge and precise skills related to the design features and safety aspects of pressurized water reactors (PWRs), a category of LWRs. PHWRs frequently use natural uranium as fuel, but sometimes also use very low enriched uranium. Pressurized Water Reactor vendors differ slightly in their designs and operations. 55. In which of the following, an intermediate heat exchanger is used. During long-term service, some pressure boundaries (such as pressure vessels, primary pipes, steam generators) … Boiling water reactors (BWR) are a type of nuclear reactor that use light water (ordinary water, as opposed to heavy water) as their coolant and neutron moderator.They are the second most used reactor for nuclear power generation in the world, next to the pressurized water reactor (PWR)—with 75 in operation as of 2018. Pressurized water reactor is designed (a) for boiling pi water in the core (b) to use liquid sodium metal as coolant (c) to use intermediate coolant (d) to prevent the water coolant from boiling in the core (e) to eliminate the coolant loop of the pressurized water. d) All of the above . Space News Pod Recommended for you SpaceX Crew Dragon Launch, Docking and Returns to Earth from ISS (International Space Station) Mar 8 - Duration: 1:11:47. Generalized corrosion is reviewed with particular emphasis on the safety issues associated with activation of corrosion products. Ans: d. 83. Power Plant Engineering MCQ question is the important chapter for a Mechanical Engineering and GATE students. b) To Supply high pressure steam. pressurized water reactor at Bataan, which was completed in 1984 but was never fueled. The core of a typical pressurized water reactor (PWR) contains about 100 tons of nuclear fuel. Filipino officials have also been talking with Rosatom about a feasibility study on small modular reactors. Water is pressurized which keeps it from boiling, even at 300°C. Moderator is not required in. Of the 110 operational nuclear power reactors in the United States, 73 of these reactors are pressurized water reactor (PWR) designs. a nuclear reactor in which the fuel is uranium oxide clad in Carboloy and the coolant and moderator is water at high pressure so that it does not boil at the operating temperature of the reactor. Correct Answer. c) Gas cooled reactor. Ans: d. 83. a) To maintain constant pressure in primary circuit under varying load. 1, pp. Pressurized water reactor (PRW) Nuclear fission produces heat inside the reactor. In a typical design concept of a commercial PWR, the following process occurs: The core inside the reactor vessel creates heat. a) Coolant. development are light water cooled and moderated small integral pressurized water reactors (iPWRs). Multiple fuel lattice designs continue to be delivered to Westinghouse and Combustion Engineering (CE) plants with unmatched global experience for decades. (a) Interference with spawning and migration of fish (b) Pollution and health hazard in the estuary due to blockage of flow of polluted water into the sea (c) Navigational hazard (d) None of the above Answers: (d) Steam reforming is currently the least … Check Also: Energy Resources MCQs (Set-I) Which among the following is not an adverse environmental impact of tidal power generation? Synonyms for Pressurized water reactor (PWR) in Free Thesaurus. Pressurized Water Reactor (PWR) Pressurized light water reactor › Almost 63% of commercial reactors operating in today's global fleet are a type of PLWR design using plain water as a coolant and moderator with enriched UO 2 as fuel. Q15. Both Pressurized Water Reactor (PWR) and Boiling Water Reactor (BWR) employ nuclear fission reaction to generate thermal energy, which, in turn, is utilized to drive the turbine for generating electricity. Common features of iPWR designs include modularity, passive safety systems for core and containment cooling, and integrated design — where most or all primary components are located inside the reactor vessel. 82. How Nuclear Reactors Work. Page-3 section-2 Page-3 section-2 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. b) Boiling water reactor. 1 synonym for pressurized water reactor: PWR. Ans: a . In the PWR, water at high pressure and temperature removes heat from the core and is transported to a steam generator. c) Reflector. d) To provide sub cooled water at high pressure . Q13. A pressurized heavy-water reactor (PHWR) is a nuclear reactor that uses heavy water (deuterium oxide D 2 O) as its coolant and neutron moderator. The global Pressurized Water Reactor (PWR) market size is expected to gain market growth in the forecast period of 2020 to 2025, with a CAGR of xx%% in … Over half of these models are manufactured by Westinghouse with the remainder supplied by Combustion Engineering and Babcox & Wilcox. A pressurised water reactor employs pressuriser for the following application (a) to maintain constant pressure in primary circuit under varying load (b) to Supply high pressure steam (c) to increase pressure of water in primary circut (d) to provide subcooled water at high pressure (e) all of the above. The coolant used in boiling water reactor … a) Pressurized water reactor. Pressurized Water Reactor Core Parameter Prediction Using an Artificial Neural Network. In the Westinghouse (page 4-12) and Combustion Engineering (page 4-13) designs, the steam/water mixture passes through multiple stages of moisture separation. 70-76. Previous discussions on reviving the Bataan plant led to nothing. Pressurized water reactors (PWR) have been affected by corrosion induced degradation to a greater or lesser extent and this is the subject of this chapter. A pressurized water reactor (PWR) is a type of light-water nuclear reactor. 82. Westinghouse is the world leader in delivering Pressurized Water Reactor (PWR) nuclear fuel. The water is heated to extremely high temperatures, but doesn’t boil because the water is under pressure. In a PWR, the primary coolant is pumped under high pressure to the reactor core where it is heated by the energy released by the fission of atoms. A pressurised water reactor employs pres-suriser for the following application (a) to maintain constant pressure in primary circuit under varying load (b) to Supply high pressure steam (c) to increase pressure of water in primary circut (d) to provide subcooled water at high pressure (e) all of the above. The water is then drained back to be used to make more steam. 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