archive-fr.com » FR » F » FRENCH-NUCLEAR-SAFETY.FR

Total: 531

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • France signs a tripartite agreement with CERN and Switzerland
    2009 IAEA ASN workshop 22 23 March 2007 Symposium international NuPEER Convention on Nuclear Safety Joint Convention on the safety of spent fuel management IAEA Safety Reviews and Appraisals in France OSART Mission conducted in France WENRA Reports Section map Section map International International reference texts Euratom Treaty IAEA safety standards International conventions Bilateral relations ASN s counterparts Personnel exchanges between ASN and its foreign counterparts Multilateral relations in Europe The European Union Clubs of Nuclear Safety and Radiation Protection Authorities Other organisations Multilateral assistance plans Multilateral relations outside Europe International Atomic Energy Agency Nuclear Energy Agency of the OECD Other UN organisations Other associations of nuclear safety and radiation protection authorities International Commission on Radiological Protection Section map Home Information News releases France signs a tripartite agreement with CERN and Switzerland Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list France signs a tripartite agreement with CERN and Switzerland concerning protection against ionising radiation and the safety of CERN facilities 22 11 2010 10 32 am Note d information On Monday 15th November 2010 ASN Chairman André Claude Lacoste on behalf of the French government 1 signed an agreement with the Swiss Federal Council and the European Organisation for Nuclear Research CERN 2 concerning protection against ionising radiation and the safety of CERN s facilities This new agreement provides a formal framework for the authorities of the host countries to fulfil their monitoring role whilst recognising the special nature of CERN as an international organisation It replaces the existing bilateral agreements concerning nuclear safety and radiation protection The text contains four major new developments It gives the two host countries for the first time a common legal basis for the control of CERN Prior to this agreement two national legal systems

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/France-signs-a-tripartite-agreement-with-CERN-and-Switzerland (2016-01-29)
    Open archived version from archive


  • Serviceability of 900 MWe reactor pressure vessels
    be taken regarding the continued operation of each 900 MWe reactor after the third ten year inspection VD3 EDF has submitted a justification documents for technical evaluation by the ASN with the technical support of the French Institute for Radiological Protection and Nuclear Safety IRSN After consulting the Standing group for reactor pressure vessel safety and subject to measures to be taken by EDF in terms of pressure vessel aging monitoring and in service inspection the ASN has not identified any generic issues compromising the serviceability of 900 MWe reactor pressure vessels until the next 10 year inspection This generic assessment will be supplemented with an individual analysis of each reactor after the conclusion of the third 10 year inspection In service inspection system during inspection phase In service inspection system during inspection phase Pressure vessel serviceability A key aspect of the safety demonstration process Pressure vessel integrity is of essential importance for demonstrating the safety of PWR NPPs This is one of the reasons why measures to ensure pressurise vessel integrity throughout the reactor service life must be implemented as of the design phase The in service integrity of pressure vessel components is demonstrated through a mechanical demonstration an aging monitoring programme and an in service inspection programme conducted by EDF Aging of reactor pressure vessels The pressure vessel contains the reactor core It is therefore exposed to high temperatures 300ºC high pressures and high radiation levels during nuclear power plant operation The mechanical properties of the pressure vessel steels have been modified for improved radiation resistance Under the effect of neutron radiation pressure vessel steels are embrittled i e their resistance to rupture in the presence of a defect is decreased EDF has developed a model used to predict the embrittlement of pressure vessel steels during exposure to a given radiation level This generic model is based on a large quantity of data and is in compliance with practices identified by the IAEA The theoretical results obtained with this model are supplemented with an experimental verification of mechanical test samples Specifically positioned inside the reactor pressure vessel so as to be exposed to higher radiation levels than the pressure vessel steel these samples are regularly extracted and examined to anticipate changes in metallic properties Consideration of manufacturing defects The demonstration of pressure vessel serviceability takes into account aging effects and the possible presence of manufacturing defects i e non detectable defects with sizes below the detection limits guaranteed by inspection procedures or defects identified during in service inspections Certain pressure vessels of the French NPP fleet exhibit underclad defects 1 due to manufacturing processes A total of 33 underclad defects have been reported in 9 pressure vessels including 20 in the Tricastin 1 reactor pressure vessel These defects are regularly inspected to ensure that they do not evolve during operation which is currently the case Measures to slow down aging and reduce its impact In order to minimise the embrittlement of pressure vessel steels EDF has implemented nuclear

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/Serviceability-of-900-MWe-reactor-pressure-vessels (2016-01-29)
    Open archived version from archive

  • HERCA/European Radiation Passbook
    Multilateral relations in Europe The European Union Clubs of Nuclear Safety and Radiation Protection Authorities Other organisations Multilateral assistance plans Multilateral relations outside Europe International Atomic Energy Agency Nuclear Energy Agency of the OECD Other UN organisations Other associations of nuclear safety and radiation protection authorities International Commission on Radiological Protection Section map Home Information News releases HERCA European Radiation Passbook Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list HERCA European Radiation Passbook 15 10 2010 11 39 am Communiqué de presse Réunion d Oslo du 30 juin 2010 I Turai Hongrie HERCA 1 the association of the Heads of European Radiological protection Competent Authorities approves the content for a harmonized European Radiation Passbook which will be sent to the European Commission for its inclusion in the European BSS On 30 June 2010 at the 5th meeting held in Oslo of the association HERCA which brings together the Heads of European Radiological protection Competent Authorities HERCA has approved the content for a harmonised European Radiation Passbook The requirements for a radiation passbook were established in 1990 by the European Directive 90 641 Euratom in order to ensure that outside workers 2 in nuclear facilities would benefit from the same level of protection as permanently employed workers and which has led to an improvement of outside workers radiation protection Nevertheless the practical implementation of these requirements varies considerably among the different European countries During its first Meeting which took place in Paris on 29 May 2007 HERCA decided to create a working group to investigate on the practical implementation of the Directive 90 641 Euratom within the Member States MS and on how a better harmonisation of the radioprotection systems for outside workers amongst the MS could be achieved The working group met for the first time on January 24th 2008 and decided to lead a survey about the practical transposition of the 90 641 Euratom Directive within the Member States This survey allowed to derive the commonalities and variations of the radiation monitoring systems for outside workers within the countries and to compare the content registered in the radiation passbooks to the required information in the Council Directive 90 641 Euratom Based on these results further steps towards harmonization of the systems amongst the different countries have been proposed and approved at the HERCA Oslo meeting in paticular good practices the data contents of a Radiation passbook and a draft Radiation passbook In the first instance the Radiation Passbook would be a paper based system However countries could opt to use an electronic possibly web based system instead of parts of the paper based system The model of radiological passbook proposed by HERCA includes an harmonised format and terminology harmonisation of the requirements on data content with a distinction between minimum requirements or mandatory fields based on annex I of the European Directive but including guidance on what is meant by the wording of the Directive and optional requirements leaving some

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/HERCA-European-Radiation-Passbook (2016-01-29)
    Open archived version from archive



  •