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5. ConclusionThe European stress tests program applied to the Belgian nuclear power plants has pointed out anumber of improvement opportunities that could reinforce the robustness of the facilities and increasethe licensee’s and national authorities’ emergency preparedness.The adequate provisions have been arranged by the licensee in order to fulfil its own commitmentstowards safety improvement, as well as the additional requirements from the regulatory body, and thecomplementary recommendations from the European peer review teams.In the meantime, the national authorities have undertaken additional actions to improve theirorganization, enhance their response an emergency situation, and continue their cooperation withtheir counterparts at the international level.Important decisions related to the national action plan are discussed at senior management level of allinterested parties.The status of the national action plan is updated periodically, and the implementation and complianceof the actions are thoroughly monitored on the field by the regulatory body.These provisions will ensure an effective and sustained improvement of the safety in the Belgiannuclear power plants with respect to the Fukushima-Daiichi accident.14/18
6. AcronymsAC Alternating currentAFW Auxiliary feedwater system (Doel units)BAE Electrical building (Tihange units)BAN Nuclear auxiliary building (Tihange units)BAR Reactor auxiliary services building (Doel units)BDBA Beyond design basis accidentBEST Belgian stress tests projectBK Bunker (Doel units)CAV Cumulative absolute velocityCEC Recirculation system (Tihange units)CEI Fire water system (Tihange units)CGCCR Centre gouvernemental de coordination et de criseCMU Ultimate means circuit (Tihange site)CNRA Committee on Nuclear Regulatory Activities (OECD)CNS Convention on Nuclear SafetyCNT Tihange nuclear power plantCNT1 Tihange nuclear unit #1CNT2 Tihange nuclear unit #2CNT3 Tihange nuclear unit #3CP Contracting parties (to the Convention on Nuclear Safety)CRP Primary cooling circuit (Tihange units)CRPPH Committee on radiation protection and public health (OECD)CSNI Committee on the safety of nuclear installations (OECD)CSS Commission on safety standards (IAEA)CTP Spent fuel pool loop system (Tihange units)CVA Auxiliary steam system (Tihange units)CW Cooling water pipes (Doel units)DC Direct currentDE Building for wet storage of spent fuel (Tihange site)DEC Design extension conditionsDUR Emergency diesel generator (Tihange 1)EAA Auxiliary feedwater system (Tihange 2 and 3)EAS Safety feedwater system (Tihange 1)ECR Emergency control roomEDG Emergency diesel groupsEDMG Extensive damage mitigation guidelinesELIA High-voltage transmission system operatorENSREG European nuclear safety regulators groupEPZ Emergency planning zoneEP&R Emergency planning and responseETSON European technical support organization networkEU European UnionFANC Federal agency for nuclear controlFINAS Fuel incident notification and analysis system (OECD-IAEA)FCV Filtered containment ventFE Fire water system (Doel units)FRG Function restoration guidelinesGDS Safety diesel group (Tihange units)GDU Emergency diesel group (Tihange 2 and 3)GNS Emergency systems building (Doel units)HOF Human and organizational factorsIAEA International atomic energy agencyIAK Emergency compressed air (Doel units)INES International nuclear and radiological event scale (IAEA)IRRS Integrated regulatory review serviceIRS Incident <strong>report</strong>ing systemIRSN Institut de radioprotection et de sûreté nucléaire15/18
Page 2 and 3: Table of contents1. Introduction ..
Page 4 and 5: 3. The report of all national regul
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Page 13: Bel V cooperates with other technic
Page 17 and 18: UHS Ultimate heat sinkUS NRC United
Page 19 and 20: Datasheet “Topics 1 to 3”This d
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Page 27 and 28: Datasheet “Additional topics”Th
Page 37 and 38: Datasheet “Implementation of acti
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