Reactor design although different from each other, the core, reactor vessel, and internals of both the ap600 and ap are essentially those of conventional westinghouse pwrs. In other cases, reactions play essential safety and environmental protection roles. Mar 30, 2017 regulators give design acceptance to the ap power station design the ap nuclear reactor, designed by westinghouse, is suitable for construction in the uk. The ap is very welldesigned and is the technology of choice in most parts of the world, westinghouse spokesman vaughn gilbert told the. The ap is a twoloop mwe pressurizer water reactor pwr. There are 66 nuclear power stations under construction around the world and its estimated that 200 reactors could be built over the next two decades. Jan 05, 2016 the plant is a pressurized water reactor with improved use of passive nuclear safety. China wants made in china nuclear reactors foreign suppliers may get left out.
Roger hannah senior public affairs officer region ii. The system provides for automatic and manual control. In the event of a designbasis accident, such as a main coolantpipe break, the plant is designed to achieve and maintain safe shutdown condition without operator action, and without the need for ac power or pumps. For nearly two decades, westinghouse has pursued an improved pressurized water reactor pwr design. The station blackout and loss of offsite power event is a minor contributor to ap since the passive safetyrelated systems do not require the support of ac power. Another example is the loss of offsite power loop event. The ruv is a reactor coolant pump, specially designed for the westinghouse ap reactor. Surfaces, which can become wetted during operation and refuelling, are clad with stainless steel welded overlay. With the ap, westinghouse sought to design a reactor that operated using conventional pressurized water reactor principles, while incorporating novel safety measures in order to increase reliability and costcompetiveness relative to competing reactor plants.
While there is a significant amount of european data, the data cited in this report is limited to united. The ap is a twoloop, 1150 mwe pressurised water reactor pwr with passive safety features and extensive plant simplifications to enhance construction, operation and maintenance. Nuclear regulatory commission approval of the design of westinghouses ap reactor for the u. The ap is designed to drain the high capacity incontainment refueling water storage tank irwst water into the reactor cavity in the vent that the core has overheated. The widely used monte carlo code mcnp is employed to perform the full core analysis at the beginning of cycle boc. The performance and safety design bases of the reactor vessel follow. Ap, passive, advantage abstract the distinguishing features of westinghouses ap advanced passive pressurized water reactor are highlighted. The design has been scaled up and improved with the ap. Lwr westinghouse smr leveraging aptm technologies lfr design gen iv for the future. Pdf a neutronic feasibility study of the ap design. The saps require that reactor chemistry on a nuclear power plant be identified and considered in safety assessments. It belongs in the same class of reactors as the areva epr but with a net electrical power of 1100mw compared to 1600 mw of the epr. Federal register ap standard technical specifications. Pollution prevention techniques used in the ap design should prevent any leaks or spills entering groundwater.
The name of this design certification amendment ap design certification amendment, the rulemaking identification number rin 3150ai81, the rulemaking docket id nrc201001, and a citation to this document at the top of the first page of the request. The ap protection and safety monitoring system pms described in this document provides protection against unsafe reactor operation during steadystate and transient power operations. The ap is several years later than originally planned. Reactors jordan university of science and technology. The reactor coolant pumps circulate reactor coolant through the reactor vessel to the steam generators for heat removal and return it to the reactor vessel.
The design characteristics of advanced power reactor 1400. Westinghouse hands over plans out of 71 nuclear reactors being built globally, china is constructing 26. Ap is designed around a conventional 2loop, 2 steam generator primary system configuration that is. Another design emphasis is on making the reactor simpler that its predecessors. The ap600 has passive safety features characteristic of the generation iii reactor concept. Using the contested approval of the ap reactor by the us nuclear regulatory commission nrc as a case. The plant is a pressurized water reactor with improved use of passive nuclear safety and many design features intended to lower its capital cost and improve its economics the design traces its history to the successful system 80 design, which was produced in various locations around the world. Gda ap nuclear reactor design by westinghouse electric. Download the free pdf converter and create pdf files from any application with pdf creator.
Each of the two steam generators has two pump casings welded to the channelhead by the suction nozzle. The result of this commitment is the ap, a simpler and more economical pwr. If you want to convert a html file to pdf, if you use a webpage or rely on database publishing there is a way to turn even complex html into pdf. The purpose of this report is to describe the basis for. Westinghouse is the worlds leader in nuclear power, and that experience increases our commitment to personnel and. For both, the reactor vessel is the same as that for a standard. The control rod system provides both manual and automatic control systems for controlling the. The ap tm is a twoloop pressurized water reactor pwr that uses a simplified, innovative and effective approach to safety. Ultimately, the goal of assessment is to reach an independent and informed judgment on the adequacy of safety in the generic design. The ruv is a very compact, vertical pumpmotor unit, designed to fit into the compartment next to the reactor pressure vessel. Reactors are usually designed based on rate considerations. In containment refueling water storage tank cooling water flow path in vessel insulation. The pump is a singlestage centrifugal unit of vertical type, which has 12,000 horse power. In any case, proper design and operation of the reactor.
Pdf reactor coolant pump type ruv for westinghouse. This provides cooling on the outside of the reactor vessel e reventing reactor vessel failure and subsequent spilling of molten core debris into the conp ainment. New reactor designs have been required to undergo comprehensive safety checks under the governments generic design assessment gda process since 2007. Best of all, pdf creator is absolutely free for anyone to use. Design of the ap power reactor warsaw university of. The melted reactor would continue to produce heat and could melt its way out of its containment vessel and eventually down into groundwater, where it would cause a violent eruption of steam that could spread radioactive materials over a wide area. Jim warren 9194165077 january 10, 2011 arnold gundersen 8028659955 john runkle 9199420600 reactor flaws neglected as regulators rush to license new nuclear plants, says engineer former nuclear senior vp points to more cracks found at operating reactors. Final safety evaluation report related to certification. The core, reactor vessel, and internals of the ap are essentially those of. Introduction the ap design has no secondary containment to provide for fission product control following a design basis accident. Westinghouse electric company once again sets a new industry standard with the ap reactor. Westinghouse ap pressurized water reactor steam generator. The ap s ascent in china began in 2004 when the government launched a rigorous twoyear evaluation aimed at selecting an advanced western reactor design that would underpin its future. The final module the containment water tank has been installed at the second ap unit under construction at sanmen in chinas zhejiang province.
Reactor coolant pump type ruv for westinghouse reactor ap. The ap reactor vessel design pressure and temperature is 2500 psia 17. Sanmen unit 1 is expected to be the first ap to begin operating, in september 2016. A neutronic feasibility study is performed to evaluate the utilization of fully ceramic microencapsulated fcm fuel in the ap reactor design. Compared with current technology, the ap reactor is theoretically 100 times safer, requires 80 per cent less piping, 85 per cent fewer control cables, and need a third fewer pumps. Nugen preparing to apply for a nuclear site licence to build and operate three ap reactors at moorside in cumbria. The aps ascent in china began in 2004 when the government launched a rigorous twoyear evaluation aimed at selecting an advanced western reactor design that would underpin its future. This is therefo re an extremely important elem ent of any reactor design, i.
The ap diverse reactor trip actuation system is independent of the reactor. The westinghouse smr will be deployed in 2022, setting the new precedent for nuclear safety, innovation and flexibility. The pms initiates selected protective functions to mitigate the consequences of. All of the reactors use westinghouses ap design, which is supposed to be meltdownproof thanks to a tank of cooling water positioned above the reactor and improved air circulation. The wide range of functions exceed most converter tools and bring your pdf converting to the next level. This key factor accounts for the ap design being so far along in the us and european licensing processes. Westinghouse ap advanced passive plant sciencedirect.
Federal register ap design certification amendment. The primary circuit of the ap reactor retains most of the general design. An overview and comparison between two westinghouse nuclear power plants, one a gen ii reactor built in the 1960s and one a gen iii reactor currently being. The reactor coolant system rcs consists of two heat transfer circuits, with each circuit containing one steam generator, two reactor coolant pumps, and a single hot leg and two cold legs for circulating coolant between the reactor and the steam generators. Conventional reactors rely on defenceindepth made up of layers of redundancy and diversity this is where, say, two valves are fitted instead of one. Abstract the ruv is a reactor coolant pump, specially designed for the westinghouse ap reactor. The combined stability of the turbine, steam generator and the. Reactors reactions are usually the heart of the chemical processes in which relatively cheap raw materials are converted to more economically favorable products. Both the original ap design and the modified design with the replacement of uranium dioxide fuel pellets with fcm fuel compacts. In particular, the aps passive safety features are described as. The ap is a pressurized water reactor pwr moderated and cooled by light normal water using enriched uranium fuel. The event of a nuclear reactor s getting out of control or losing its cooling water so that it melts from its own production of heat.
For example, the ap claims to use 50% fewer safetyrelated values, 89% less piping, and 85% less cabling. Pressurized water reactor pwr, the training scope extends to the plant operation field and emergency operating procedures eops. Nrc in pra core damage sequences cooling flow driven by natural circulation water source. Convert html to pdf, html to pdf converter pdfreactor. Advanced pressurized water reactor with active and. The paper discusses the unique design features of ap. It is a hermetically sealed, wet winding motor pump. The ap nuclear reactor design executive summary the ap advanced passive nuclear reactor design has a weaker containment, and fewer backup safety systems than current reactor. On one hand, it is an evolutionary design based on proven technology of the existing pressurized water reactor npp.
The ap nuclear reactor design executive summary the ap advanced passive nuclear reactor design has a weaker containment, and fewer backup safety systems than current reactor designs. The advanced passive ap is a nuclear pressurized water reactor pwr originally designed by westinghouse electric company. Jun 01, 2010 gda ap nuclear reactor design by westinghouse electric company llc consultation documents. Nov, 20 introduction the westinghouse electric company llc westinghouse ap pressurized water reactor pwr reactor coolant system rcs is similar in design to the combustion engineering ce rcs design, with a reactor vessel rv housing the core, two steam generators sgs, four reactor coolant pumps rcps, and a pressurizer. With pdfreactor you count on a powerful html to pdf converter software. New ap nuclear reactor design sparks ire in these times. First two ap nuclear reactors nearing completion by the. The pms initiates selected protective functions to mitigate the consequences of design basis events. Two commonly used reactors are the cstr continuous stirred tank reactor and the pfr plug flow reactor. Ap reactor internals historical precedent although the ap reactor internals are classified as prototype due to various firstofakind foak design features, the majority of the ap reactor internals design is similar to existing plants that have been safely operating for many years. A bittersweet milestone for the worlds safest nuclear. The hongyanhe power station was one of the first to come online in china after the fukushima disaster.
The projected core damage frequency is nearly times less than todays nuclear regulatory commission nrc requirements, on par with plants currently being considered for construction. The ap is a twolooppressurized water reactor pwr with passive safety features and extensive plant simplifications that enhance its construction, operation, maintenance and safety. Aug 29, 2015 reactor coolant pumps for ap still a problem august 29, 2015 by rod adams 27 comments this is a story that i really dont want to tell, but bad news is like old fish. These reactors provide enough residence time for the reaction to take place with satisfactory conversion. A bittersweet milestone for the worlds safest nuclear reactors. Design acceptance confirmation issued in march 2017.
The ap is a nuclear power plant designed and sold by westinghouse electric company. Pdfcreator download for free, download pdf printer, pdf. Reactor coolant system and connected systems design control document epsgwgl700 5. Design of the ap power reactor bernd doehnert westinghouse electric belgium key words. Nuclear regulatory commission nrc is soliciting public comment on its generic technical specification travelers gtsts for the development of standard technical specifications sts for the ap certified reactor design based on the ap generic technical specifications gts. The urd addresses evolutionary and passive light water reactors. The plant is a pressurized water reactor with improved use of passive nuclear safety and many design features intended to lower its capital cost and improve its economics.