| 词条 | Mitsubishi APWR | ||||||||||||||||||||||||||
| 释义 |
This article is about the Mitsubishi Heavy Industry's design. For the Westinghouse AP series, see AP1000. The Mitsubishi advanced pressurized water reactor (APWR) is a generation III nuclear reactor design developed by Mitsubishi Heavy Industries (MHI) based on pressurized water reactor technology. It features several design enhancements including a neutron reflector, improved efficiency and improved safety systems. It has safety features advanced over the last generation, including a combination of passive and active systems. None are currently under construction. HistoryThe standard APWR is going through the licensing process in Japan and two (of 1538 MWe) are being constructed at the Tsuruga plant. The next APWR+ will be of a 1700 MWe power and have full MOX core abilities. The US-APWR was developed by MHI to modify their APWR design to comply with US regulations. TXU selected the US-APWR for use at multiple sites, including the Comanche Peak Nuclear Generating Station.[1] However, in 2013, Mitsubishi slowed down U.S. certification work, and the application to build two units at Comanche was suspended.[2] The reactors are intended for use in nuclear power plants to produce nuclear power from nuclear fuel. Plant parameters
The US-APWR has several design features to improve plant economics. The core is surrounded by a steel neutron reflector which increases reactivity and saves ~0.1wt% U-235 enrichment. In addition, the US-APWR uses more advanced steam generators (compared to the APWR) which creates drier steam allowing for the use of higher efficiency (and more delicate) turbines. This leads to a ~10% efficiency increase compared to the APWR. Several safety improvements are also notable. The safety systems have enhanced redundancy, utilizing 4 trains each capable of supplying 50% of the needed high pressure makeup water instead of 2 trains capable of 100%. Also, more reliance is placed on the accumulators which have been redesigned and increased in size. The improvements in this passive system have led to the elimination of the Low Pressure Safety Injection system, an active system. UnitsPlannedIn 2013, plans to build units in the U.S. were suspended:[2]
On 10 May 2011, Japanese Prime Minister Naoto Kan announced that Japan was cancelling plans for new nuclear construction, including the 2 proposed new APWR reactors at Tsuruga Nuclear Power Plant.[4] As of 2014, under a new government, plans for Tsuruga were uncertain.[5] In March 2015 the Nuclear Regulation Authority (NRA) accepted an expert report that concluded Tsuruga is on an active geological fault.[6] See also
References1. ^{{cite news | url= https://www.reuters.com/article/bondsNews/idUSN1952971720080919 | title= Luminant seeks new reactor, 3rd Texas filing | last= O'Grady | first= Eileen | date= 2008-09-19 | publisher= Reuters | accessdate= 2008-09-19 }} {{Mitsubishi Heavy Industries}}2. ^1 {{cite news | url= http://www.world-nuclear-news.org/NN-Mitsubishi-delays-certification-of-APWR-1211134.html | title= Mitsubishi delays certification of APWR | publisher= World Nuclear News | date= 12 November 2013 | accessdate= 15 November 2013}} 3. ^{{cite web |url=https://www.mnes-us.com/us-apwr/overview |title=The US Advanced Pressurized Water Reactor |publisher=Mitsubishi Nuclear Energy Systems |date=|accessdate=15 November 2013}} 4. ^{{cite web | url= https://www.nytimes.com/2011/05/11/world/asia/11japan.html | title= Japan to Cancel Plan to Build More Nuclear Plants | date= May 10, 2011 | work= New York Times }} 5. ^{{cite news |url=http://www.world-nuclear-news.org/RS-EU-APWR-passes-EUR-assessment-2210144.html |title=EU-APWR passes EUR assessment |publisher=World Nuclear News |date=22 October 2014 |accessdate=30 October 2015}} 6. ^{{cite news |url=http://www.world-nuclear-news.org/RS-Tsuruga-2-sits-on-active-fault-NRA-concludes-2603155.html |title=Tsuruga 2 sits on active fault, NRA concludes |publisher=World Nuclear News |date=26 March 2015 |accessdate=30 October 2015}} 3 : Nuclear power reactor types|Nuclear technology in Japan|Mitsubishi Heavy Industries products |
||||||||||||||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。