report

Belgian stress tests action plan ‐ 2012‐12‐14No Topic Source Recommendations, Requirements from other national reviews Action : Family ‐ subfamily ‐ sub‐subfamilyActions to beimplementedComment15Emergencypreparedness andresponseNational regulatoryinspectionEmergency preparednessFor the flooding risk, further improvement of the emergency preparednessstrategy and organization, including corresponding procedures, should beimplemented by mid 2012.External hazards ‐ Flooding ‐ Procedures in case offlooding540Tihange NPP only§ 7.2.2 of national stresstests report16Design issuesNational regulatoryinspectionNon conventional meansSince the non conventional means (CMU ‐ Ultimate means circuit) is currentlyneeded for floods exceeding the “reference flood” of 2615 m³/s (i.e., floodswith return periods exceeding 100 to 400 years), the licensee should determineEmergency management ‐ Requirements ‐Specifications of mobile meansExternal hazards ‐ Flooding ‐ Availability of theadditionnal means against extreme flooding400, 515, 541Tihange NPP only§ 7.2.2 of national stresstests report17Design issuesNational regulatoryinspectionPower supplyThe currently implemented alternate power sources for I&C systems andemergency lighting should be further improved, where needed, and thesufficiency of available or recovered I&C equipment to safely control the threeunits should be checkedExternal hazards ‐ Flooding ‐ Additional meansagainst extreme flooding (pumps, dieselgenerators,…)Power supply ‐ Total Station Black‐out ‐ Autonomousgenerator to recharge the instrumentation176, 177, 178, 542Tihange NPP only§ 7.2.2 of national stresstests report18Design issuesNational regulatoryinspectionNon conventional meansThe technical characteristics of these non‐conventional means (NCM) shouldaccount for the adverse (weather) conditions they may be subject to during thewhole period of operation. If this is not covered by design, an appropriateprotection or compensatory strategy should be developed.Emergency management ‐ Infrastructure ‐ On‐siteresistant storage for mobile meansEmergency management ‐ Requirements ‐Specifications of mobile means400, 509, 515, 572, 573Tihange NPP only§ 7.2.2 of national stresstests report19Emergencypreparedness andresponseNational regulatoryinspectionFlooding alert systemThe flooding alert system, which is based on a direct communication betweenthe regional service competent for forecasting river flow rates in the MeuseExternal hazards ‐ Flooding ‐ Procedures in case ofbasin (SETHY, making use of a dedicated forecasting system) and the NPP (withfloodingTihange 2 being the single point of contact and responsible for warning Tihange1 and Tihange 3), is a crucial factor. Therefore, its robustness and efficiencyshould be further improved. In particular:543Tihange NPP only§ 7.2.2 of national stresstests report202122Emergencypreparedness andresponseEmergencypreparedness andresponseEmergencypreparedness andresponseNational regulatoryinspectionNational regulatoryinspectionNational regulatoryinspection∙ the protocole between the NPP Tihange and SETHY should be formalized assoon as possible.∙ the licensee should pursue regular tests of the secured communicationchannels and transmitted data (i.e., on‐line measurements and predictions ofriver flow rates).∙ the licensee should organize emergency preparedness exercises involvingboth the NPP and SETHY personnel.External hazards ‐ Flooding ‐ Procedures in case offloodingExternal hazards ‐ Flooding ‐ Procedures in case offloodingExternal hazards ‐ Flooding ‐ Procedures in case offlooding543543543Tihange NPP only§ 7.2.2 of national stresstests reportTihange NPP only§ 7.2.2 of national stresstests reportTihange NPP only§ 7.2.2 of national stresstests report23Emergencypreparedness andresponseNational regulatoryinspection∙ criteria used to launch the internal emergency plan and to start the “alertphase” and associated actions should be unambiguously defined in theapplicable emergency procedures.External hazards ‐ Flooding ‐ Procedures in case offlooding543Tihange NPP only§ 7.2.2 of national stresstests reportAdditional topics3/9