report

Belgian stress tests action plan ‐ 2012‐12‐14No. Plant / Type Topic Sub‐family Sub‐sub family Action / ActivityRelatedrecommendation onEuropean level("Topics 1 to 3")Relatedrecommendation onnational level("Additional topics")StatusTarget Date119 CNT1 / PWR Power supply RB protectionAdditional means to assure reactorbuilding backup spray in caseoverpressurePerform a feasibility study for the addition of a flanged connection tothe outside of the nuclear auxiliary building to allow spraying into thereactor building using a mobile pump, so as to avoid overpressure inthe containmentIn progress 31/12/2013120 CNT2 / PWR Power supply RB protectionAdditional means to assure reactorbuilding backup spray in caseoverpressurePerform a feasibility study for the addition of a flanged connection tothe outside of the nuclear auxiliary building to allow spraying into thereactor building using a mobile pump, so as to avoid overpressure inthe containmentIn progress 31/12/2013121 CNT3 / PWR Power supply RB protectionAdditional means to assure reactorbuilding backup spray in caseoverpressurePerform a feasibility study for the addition of a flanged connection tothe outside of the nuclear auxiliary building to allow spraying into thereactor building using a mobile pump, so as to avoid overpressure inthe containmentIn progress 31/12/2013122 CNT1 / PWR Water supply Backup feedwater tank Enhanced feedwater tank capacity123 CNT1 / PWR Water supply Total Station Black‐out Steam generator protections124 CNT3 / PWR Water supply Total Station Black‐out Steam generator protections125 CNT1 / PWR Water supply Total Station Black‐out Steam generator protectionsPerform a feasibility study to increase the capacity of the EAS safetyfeedwater tankPerform a feasibility study to enhance the reliability of manualoperations on the steam generators discharge valvesPerform a feasibility study to enhance the reliability of manualoperations on the steam generators discharge valves (addition ofmanual valves)Perform a feasibility study for the addition of mobile compressors tobe connected to the emergency compressed air circuitIn progress LTOIn progress 31/12/2012In progress 30/06/2013In progress 31/12/2013126 CNT2 / PWR Water supply Total Station Black‐out Steam generator protectionsPerform a feasibility study for the addition of mobile compressors tobe connected to the emergency compressed air circuitIn progress 31/12/2013127 CNT3 / PWR Water supply Total Station Black‐out Steam generator protectionsPerform a feasibility study for the addition of mobile compressors tobe connected to the emergency compressed air circuitIn progress 31/12/2013128 CNT1 / PWROperationmanagementTotal Station Black‐outProcedures in case of total station blackoutProvide procedures to cope with a complete SBO, including thenecessary non‐conventional means and the intervention strategies (forexample: rapid depressurization to limit damage to the primary pumpsseals, coordination with non‐conventional means present on site,suppression of non‐essential electrical loads, nitrogen in theaccumulators, local command of TPA turbopumps, water top‐up anddischarge of steam from the pools and priority status of local actions incase of loss of normal cooling of the pools, etc.)20, 25 In progress 31/12/2013Implementation of activities6/20