logo
* 搜尋
* 核能資訊中心
* 中心簡介
* 日本福島核災專區
* 相關資訊
國際核能現況 : ASN gives final opinion on Flamanville EPR vessel
發表人 nicenter 於 2017/10/13 14:30:27 (29 人讀取)

The mechanical properties of the vessel head and bottom head of the Flamanville 3 EPR reactor pressure vessel are adequate and are therefore serviceable, the French nuclear regulator has concluded. However, the Autorité de Sûreté Nucléaire (ASN) still requires the vessel head to be replaced by the end of 2024.


Illustration of an EPR reactor vessel head (Image: ASN)

Areva NP revealed its discovery of an anomaly in the composition of the steel in certain zones of the reactor pressure vessel's (RPV's) closure head and bottom head of the Flamanville EPR in April 2015. The engineering group initiated a test program to demonstrate that the mechanical strength of the steel is sufficient in all operating situations, including accident situations. Its conclusions were sent to ASN in December 2016.


On 29 June, ASN said it had provisionally ruled the unit can start up safely, at the end of 2018 as planned, but that the reactor pressure vessel head would need to be replaced once a new one has been produced.


It made its draft opinion on the anomaly in the steel used for the bottom head and vessel head available for public comment between 10 July and 12 September. It also made the examination report produced by ASN and France's Institute for Radiological Protection and Nuclear Safety (IRSN) available to the public, together with the opinion of its Advisory Committee for nuclear pressure equipment. The consultation attracted more than 13,000 comments.


ASN issued its final opinion yesterday, saying it considers that the anomaly "is not such as to compromise the commissioning of the reactor pressure vessel, provided that specific checks are carried out during operation of the installation". However, it added, "As the feasibility of these checks cannot at present be confirmed for the vessel head, ASN considers that the current head cannot be used beyond 2024."


ASN noted the commissioning of the Flamanville EPR reactor pressure vessel will also require authorisation, "issued more specifically in the light of the results of a hydrotest on the entire main primary system".


The regulator said that, with the support of IRSN, it is also continuing its review of the Flamanville EPR reactor commissioning authorisation application, "as and when it receives the files transmitted by EDF".


ASN's approval of the start of operations at Flamanville 3 is a European Commission precondition for approving EDF's planned takeover of Areva's reactor business.


Earlier this week, EDF said it is preparing for the next stage of system performance testing at the Flamanville EPR, with a view to the fuel loading and reactor start-up at the end of the fourth quarter of 2018. Cold tests will start in the second fortnight of December, with hot tests starting in July 2018.


Construction work began in December 2007 on the 1650 MWe unit at the Flamanville site in Normandy – where two reactors have been operating since 1986 and 1987. The dome of the reactor building was put in place in July 2013 and the reactor vessel was installed in January 2014. The reactor was originally expected to start commercial operation in 2013.


Researched and written
by World Nuclear News



source:http://www.world-nuclear-news.org/RS-ASN-gives-final-opinion-on-Flamanville-EPR-vessel-1210174.html



其他新聞
2017/11/22 15:28:16 - 環境輻射監測正常,歐洲放射性釕-106並未影響台灣
2017/11/22 15:26:22 - Quality assurance issues affect French and Swiss plants
2017/11/22 14:06:12 - US conversion plant suspends UF6 production
2017/11/17 15:59:03 - IAEA sees continuous improvement in safety at Borssele
2017/11/17 14:17:40 - US test reactor resumes operations
2017/11/17 14:15:44 - Regulators start technical assessment of UK HPR 1000
2017/11/15 14:26:06 - China’s Nuclear Capacity Continues To Rise As It ‘Shapes Global Energy Trends’
2017/11/15 14:23:44 - China and Vietnam to cooperate on nuclear safety
2017/11/15 14:21:56 - Second licence renewal for Virginia units
2017/11/15 14:20:24 - IAEA concludes Belgian research reactor safety review
2017/11/15 14:18:28 - http://www.world-nuclear-news.org/EE-IEA-notes-nuclears-role-in-meeting-sustainability-goals-1411174.html
2017/11/10 14:36:20 - FANR: Globalisation key to regulatory excellence
2017/11/10 14:27:58 - Cameco to suspend McArthur River and Key Lake
2017/11/10 14:25:39 - Integrated Molten Salt Reactor passes pre-licensing milestone
2017/11/10 14:23:03 - Rolls-Royce to conduct SMR study for Jordan
2017/11/8 9:42:27 - 核三廠1號機預定於11月5日降載運轉,原能會持續監控電廠運轉安全
2017/11/8 9:41:01 - Bulgaria Extends Kozloduy-5 Operating Licence By 10 Years
2017/11/8 9:39:36 - Rooppur 1 receives construction licence
2017/11/8 9:36:52 - Bulgaria issues Kozloduy 5 licence extension
2017/11/8 9:32:06 - UN report identifies emissions gap

 線上期刊目錄

 瀏覽人數
今天: 6
昨天: 111
本月: 1985
總計: 505227

30013 新竹市光復路二段101號 創新育成中心三樓309室 電話:(03)571-1808 傳真:(03)572-5461 Email: nicenter@nicenter.org.tw