Pressurized Water Reactor
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Boiling Water Reactor (BWR) Systems
www.nrc.govThe control cell assembly (page 3-5) is representative for boiling water reactor 1 through 6. Each control cell consists of a control rod (7) and four fuel assemblies that surr ound it. Unlike the pressurized water reactor fuel assemblies, the boiling water reactor fuel bundle is enclosed in a fuel channel (6) to direct
Nuclear Power for Electrical Generation
www.nrc.govFor pressurized water reactor fuel, there will also be guide tubes in which the c ontrol rods travel. The guide tubes will be welded to the spacer grids and attached to the upper and lower end fittings. The guide tubes provide a channel for the movement of th e control rods and provide for support of the rods.
THE ULTIMATE FAST FACTS GUIDE TO NUCLEAR ENERGY
www.energy.govPRESSURIZED-WATER NUCLEAR REACTORS More than 65% of the commercial reactors in the United States are pressurized-water reactors or PWRs. These reactors pump water into the reactor core under high pressure to prevent the water from boiling. The water in the core is heated by nuclear fission and then pumped into tubes inside a heat
Radioactive waste management at nuclear power plants
www.iaea.orgated. Reactors cooled and moderated by water generate more liquid waste than those cooled by gas. The volumes of liquid waste generated at boiling-water reac-tors (BWRs) are significantly higher than at pressurized-water reactors (PWRs). Because the cleanup system of heavy-water reactors (HWRs) works mainly with once-
Chapter 17 SOLAR ENERGY
personal.ems.psu.eduthe primary loop of a pressurized water nuclear reactor (see Figure 13-8). In the secondary loop, this hot water is used to heat the storage tank, from which the hot water is distributed to the various consumers (for example, a shower in a home or a dishwasher). The size of
The Production of Hydrogen Gas: Steam Methane Reforming
sites.psu.edu1. Water enters the furnace, producing steam at a very high temperature. 2. Steam reacts with natural gas, producing hydrogen and carbon monoxide. 3. In the water shift reactor, carbon monoxide and steam react to form carbon dioxide and more hydrogen gas. 4. The hydrogen gas is purified to the customer’s specifications, removing contaminants. 5.
Chapter 15 Vessels - Pearson
www.pearsonhighered.comPressurized tank—an enclosed vessel in which a greater-than-atmospheric pressure is maintained, p. 214. Reaction furnace—a reactor that combines a firebox with tubing to provide heat for a reaction that occurs inside the tubes, p. 222. Reactor—a vessel in which chemical reactions are initiated and sustained, p. 220.
AP-42, CH 6.6.2: Poly(ethylene Terephthalate)
www3.epa.govthe water is cooled and then recirculated through the vacuum system, or to a waste water treatment plant (once-through system) (18). Product from the polymerization reactor (referred to as the polymer melt) may be sent directly to fiber spinning and drawing operations (6). Alternatively, the polymer melt may be chipped or pelletized (7),
WATER WORDS DICTIONARY Abbreviations and Acronyms
water.nv.govWater Words Dictionary DIVISION OF WATER PLANNING 2 Abbreviations and Acronyms BTU British Thermal Unit BWPC Bureau of Water Pollution Control (NDEP/DCNR) BWQP Bureau of Water Quality Planning (NDEP/DCNR) BWR Boiling Water Reactor C Celsius (Centigrade Temperature Scale) CAA Clean Air Act (EPA) CAPA Critical Aquifer Protection Area (SDWA) CBRA Coastal Barrier Resources …