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  • ENSREG experts visit three French nuclear power plants
    ASN About ASN Activities monitored by ASN The ASN doctrine The ASN strategy The ASN commission The ASN organisation Contact us Technical support ASN s Scientific Committee The IRSN The Advisory Committees Approving organisations and laboratories ASN s other technical support organisations Professional events Radon national action plan workshop International Conference on Modern Radiotherapy 2 4 December 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 ENSREG experts visit three French nuclear power plants Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list Action plan further to the European stress tests ENSREG experts visit three French nuclear power plants 28 09 2012 5 31 pm Note d information From 10 to 13 September 2012 the Chooz Cattenom and Fessenheim nuclear power plants were visited by European experts under an ENSREG mandate In France ASN was responsible for supervising the organisation of these visits which are part of the action plan adopted by ENSREG after the stress tests required by a decision of the European Council in the wake of the Fukushima Daiichi accident of March 2011 The purpose

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/ENSREG-experts-visit-three-French-nuclear-power-plants (2016-01-29)
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  • Information on Fessenheim NPP event
    by ASN The ASN doctrine The ASN strategy The ASN commission The ASN organisation Contact us Technical support ASN s Scientific Committee The IRSN The Advisory Committees Approving organisations and laboratories ASN s other technical support organisations Professional events Radon national action plan workshop International Conference on Modern Radiotherapy 2 4 December 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 Information on Fessenheim NPP event Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list Information on Fessenheim NPP event 06 09 2012 9 10 am Note d information On 5 th September 2012 the French Nuclear Safety Authority ASN was notified by EDF of an incident related to a gas release which occurred at around 15 00 in nuclear auxiliary buildings 1 of the Fessenheim NPP During the handling process of hydrogen peroxyde a non radioactive chemical some of the product was spilled leading to a steam release which triggered the fire alarm sensors As provided by the convention linking Public Services and the NPP fire fighting services have been deployed on site No fire did occur

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/Information-on-Fessenheim-NPP-event (2016-01-29)
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  • ASN's national action plan for management of the radon risk
    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 ASN s national action plan for management of the radon risk Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list ASN s national action plan for management of the radon risk 31 08 2012 10 41 am Note d information ASN published the 2011 2015 national action plan for management of the radon risk This document is the result of collaboration between ASN the ministries responsible for health housing and labour and the partner organisations Institute for Radiation Protection and Nuclear Safety IRSN French Health Monitoring Institute InVS Building Industry Scientific and Technical Centre CSTB Regional Council of the Limousin département This second action plan follows on from the 2005 2008 plan the results of which were published by ASN in 2009 Radon is a naturally occurring radioactive gas which emanates from granite and volcanic subsoils In enclosed spaces radon can build up and lead to an increased risk of lung cancer The 2011 2015 national action plan emphasises the reduction of exposure in existing residential buildings and the application of new construction rules for new buildings in order to minimise human exposure as far as possible This action plan comprises 30 measures divided into 5 key areas 1 Management of the radon risk in existing residential buildings including in particular the drafting of regulatory texts defining the procedures for implementing article L 1333 10 of the Public Health Code concerning the new measures for managing the radon risk in existing residential

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/ASN-s-national-action-plan-for-management-of-the-radon-risk (2016-01-29)
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  • ASN reports on controls imposed on nuclear reactors’ vessels
    ASN reports on controls imposed on nuclear reactors vessels in France 20 08 2012 9 19 am Communiqué de presse In France ASN controls manufactoring and in service inspection of key operating pressure equipments of nuclear reactors including the reactor pressure vessel A specific monitoring of these equipments construction has been applied since 1974 For all components of French reactors vessels a number of controls aiming at detecting defects in forged pieces were carried out during production Moreover ultrasonic inspection of highly irradiated areas of operating French reactors vessels are conducted every ten years During inspections conducted in July 2012 in Belgium on the Doel 3 nuclear reactor s vessel many indications that could be assimilated to potential cracks were detected Checks carried out in France show that no French vessel presents defects corresponding of those concerned in Doel 3 In France two types of defects of different nature have been detected They have been identified are monitored and are subject to information from the ASN Defects under vessels cladding The vessels are covered on their inner side with a layer of stainless steel to protect the water of the primary circuit Controls specifically aimed at detecting undercladding defects have been carried out since 1991 These controls include the entire highly irradiated area of the vessel and extend significantly beyond the monitoring of the only welds 37 defects have been detected on the core s shells 1 of the French reactors vessels including 20 on Tricastin No 1 reactor s vessel These manufacturing defects are periodically checked and do not evolve while operating Defects under vessels cladding are subjected to a special justification which demonstrates their harmlessness This justification is periodically reviewed by ASN to take account the vessels aging as well as the evolution of knowledge and of available information The last review of this justification has been the subject of a position of the ASN in September 2010 published on its website The undercladding defects in cladding identified in France are isolated and well defined They do not affect the quality of metal over a large area and the reasons for their occurrence are known As such they are not comparable to the defects detected on Doel 3 s vessel where several thousands of clustered defects have been observed Defects detected in a weld of vessel s bottom mounted instrumentation penetration 2 at Gravelines 1 In September 2011 a defect was observed on a bottom mounted instrumentation penetration at Gravelines reactor n 1 It led ASN to request the extension of controls in this area of the vessels The detected defect was located in the weld of the penetration which is made of an alloy that can be sensitive to stress corrosion cracking under certain conditions EDF demonstrated the harmlessness of this defect in the short term and decommissioned the affected penetration while setting up a monitoring system dedicated to the vessel s bottom ASN also requested that EDF propose a solution to repair the defect s final

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/ASN-reports-on-controls-imposed-on-nuclear-reactors-vessels (2016-01-29)
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  • News releases
    OPECST II All the major issues concerning nuclear safety and radiation protection in France and abroad were addressed during a high level debate ASN presented its report on the status of nuclear safety and radiological protection in France in 2009 to the members of the French Parliamentary Office for the Evaluation of Scientific and Technical Choices OPECST Read more 07 04 2010 4 09 pm ASN has presented its report on The State of Nuclear Safety and Radiological Protection in France in 2009 to the French Parliamentary Office for the Evaluation of Scientific and Technical Choices OPECST I The ASN Commission and its president André Claude Lacoste today presented the ASN report on The State of Nuclear Safety and Radiological Protection in France in 2009 to Members of Parliament from the Parliamentary Office for the Evaluation of Scientific and Technical Choices OPECST Read more 06 04 2010 4 03 pm Medical imaging ASN is contributing to an international harmonisation of practices At a colloquium organised by the World Health Organisation WHO 1 3 March 2010 in which the French Nuclear Safety Authority ASN participated representatives of 23 international organisations and learned societies agreed on a roadmap aimed at both establishing international good practice guidelines for medical imaging issues and at facilitating their implementation The roadmap also envisages monitoring and evaluation of the impact of this approach for the various clinical situations Read more 29 03 2010 3 04 pm ASN has reclassified to level 2 the incident which occurred on 19 November 2009 in the irradiated fuel reprocessing plant UP2 400 on the site at La Hague On March 24 following a proposal by the operator ASN reclassified to level 2 on the INES scale the incident which occurred on 19 November 2009 in the MAU Intermediate Level Uranium workshop of nuclear facility no 33 known as UP2 400 on the AREVA NC site at La Hague Read more 26 03 2010 3 36 pm ASN publishes report on operating experience feedback from an interventional neuroradiology event at Strasbourg University Hospital with recommendations for improving radiation protection for patients On 20 March 2009 Strasbourg University Hospital reported a greater than normal number of side effects in patients being treated in a radiology department for arteriovenous malformations in the brain To gain further information ASN performed investigations and assessments from which it derives conclusions in a report now available at its website www asn fr Read more 17 02 2010 10 43 am Quarterly assessment of radiotherapy events classified as level 1 on the ASN SFRO scale reported to the ASN between October 1 and December 31 2009 Between October 1 and December 31 2009 15 radiotherapy events were classified as level 1 on the ASN SFRO scale 1 These events not expected to have any impact on patients health are nonetheless analysed so as to determine the consequences thereof particularly in terms of organisation and to prevent them from recurring Read more 03 02 2010 11 00 am ASN joins

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/%28offset%29/180 (2016-01-29)
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  • Fuel storage pool siphon-breakers
    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 Fuel storage pool siphon breakers Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list Fuel storage pool siphon breakers ASN has verified the measures taken by EDF on all reactors 07 08 2012 9 37 am Note d information On 18 January 2012 EDF notified ASN of the absence of a siphon breaker orifice on the fuel storage pool cooling pipes for reactors 2 and 3 at the Cattenom NPP This significant safety event ESS detected during the course of an internal inspection was rated level 2 on the INES scale which comprises 8 levels from 0 to 7 see press release of 6 February 2012 In every reactor a pool is provided for the storage of fuel assemblies pending their use in the reactor core or pending disposal The fuel assemblies are kept under water and permanently cooled by a circulating water system referred to as PTR The cooling water is injected through a pipe at the bottom of the pool Pipe nonconformity in NPP fuel storage pools In certain situations for example incorrect operation of certain valves or a break in a pipe connected to the PTR cooling system the injection pipe could extract water from the pool by acting as a siphon instead of injecting water which would lead to a drop in the water level in the pool A significant drop in the water level would expose the fuel assemblies meaning that they would no longer be cooled and would heat up until damage occurred An orifice called the siphon breaker is made in this pipe near the surface of the pool to prevent any initiation of a siphon Following analysis of this event by ASN and IRSN ASN asked EDF to run a systematic check on the presence of these siphon breakers on all the storage pools of all its reactors as well as on their dimensions For the discharge piping on the PTR system these checks revealed that the diameters of the siphon breakers on the Belleville 1 and Golfech 1 pools were 15 and 17 mm respectively as compared with an expected diameter of 20 mm conformity work was carried out on these siphon breakers Two reactors Nogent 1 and Penly 2 also had siphon breakers with a diameter of between 19 and 20 mm EDF presented an analysis concluding that the diameters measured were enough to ensure that the siphon breakers would function satisfactorily For the P4 plant series

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/Fuel-storage-pool-siphon-breakers (2016-01-29)
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  • CENTRACO incineration furnace
    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 CENTRACO incineration furnace Print Mettre en favoris Share on Information News releases Publications ASN s videos Back to news list ASN authorises restart of the CENTRACO incineration furnace subject to transmission of the complete report on the operations carried out to check the conformity of the equipment condition needed to ensure the safety of the furnace 17 07 2012 10 25 am Note d information The CENTRACO facility operated by SOCODEI on the Marcoule Gard site has been closed down since 12 September 2011 following the severe industrial accident which occurred in the melting unit leading to the death of one member of staff and injuring four others one of them seriously In a resolution dated 27 September 2011 ASN stated that it would have to authorise any restart of the CENTRACO facility s melting and incineration furnaces In accordance with the provisions of this resolution the licensee sent ASN information to prove that restart of the incineration furnace would take place in satisfactory conditions of safety SOCODEI in particular communicated the initial results of the verifications run on the facility prior to restart for example concerning the condition of the equipment necessary for the safety of the incinerator furnace as well as the conclusions of the review into the situations entailing a risk of explosion within the incineration unit After the review conducted with the help of its technical support organisation ASN considered that the evidence submitted was satisfactory An

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/CENTRACO-incineration-furnace (2016-01-29)
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  • ASN's 2011 report : "there is a before and an after Fukushima"
    recover and repackage legacy waste still present on the site on the nuclear facilities of Eurodif Socatri TU5 GB II Comurhex effective means to reduce the consequences of an accidental leak of chlorine trifluoride ClF3 hydrogen fluoride gas HF or uranium hexafluoride UF6 to be submitted to ASN by AREVA before 31st December 2012 for CEA no later than 31st December 2013 removal of the fissile materials from the MASURCA facility to a facility designed to withstand an earthquake as the CEA has undertaken to do repeatedly facility improvements against the risk of flooding or the control of sodium fires for the Phenix reactor the risk of loss of coolant for the OSIRIS reactors the risk of flooding loss of cooling and seismic behaviour for the Jules Horowitz reactor To conclude André Claude Lacoste stated that the response to the Fukushima Daiichi accident represented considerable work lasting several years both for the licensees and for ASN and its technical support organisation IRSN This work demands significant investment in order to reinforce the safety of the nuclear facilities in France ASN will be particularly vigilant in monitoring the implementation of all the requirements it has issued The other key points of the ASN 2011 Report on the state of nuclear safety and radiation protection in France L année 2011 a été en France comme les années précédentes assez satisfaisante sur le plan de la sûreté nucléaire et de la radioprotection Contrôle review 194 ASN report abstracts on the state of Nuclear Safety and Radiation Protection in France in 2011 PDF 3 94 Mo Nuclear facilities in 2011 EDF nuclear power plants Of EDF s 19 nuclear power plants four sites stand out positively for the past 3 years Penly with regard to nuclear safety for the past 3 years Blayais and Golfech with regard to radiation protection Golfech with regard to environmental protection two sites however are under performing Chinon in the field of nuclear safety and radiation protection Saint Alban in the field of nuclear safety and environmental protection as has been the case for the past 3 years ASN considers that EDF needs to reinforce the in service monitoring of nuclear pressure equipment in the light of the new regulatory requirements applicable In the field of radiation protection ASN considers that the results on NPPs sites have improved The facilities of the AREVA group For the la Hague site ASN considers that efforts need to be continued in particular to take account of experience feedback and in the recovery of legacy waste ASN recalls that it considers the legacy waste recovery and removal operations to be a priority which must be conducted in accordance with the specified time frames For the Tricastin site progress with the projects to refurbish or replace the facilities remains a major challenge The CEA facilities The licensee regularly notifies ASN of its compliance with undertakings concerning actions identified as safety priorities ASN considers that this approach which was initiated 4 years ago by CEA

    Original URL path: http://www.french-nuclear-safety.fr/Information/News-releases/ASN-s-2011-report-there-is-a-before-and-an-after-Fukushima (2016-01-29)
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