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La centrale nucleare di Leibstadt (AG) è stata disattivata poco dopo le 11 di sabato a causa di un problema al circuito di raffreddamento dello statore del generatore. La durata del fermo è indeterminata, indica una nota del gestore KKL che già il 27 settembre aveva dovuto bloccare l’impianto a causa di una fuoriuscita di olio.
La disattivazione è stata necessaria per procedere ad accertamenti e localizzare il nuovo guasto. Il generatore dispone di due circuiti di raffreddamento, uno destinato al rotore e uno allo statore, la parte fissa di una macchina rotante. Nel primo caso il raffreddamento avviene con l'acqua, mentre nel secondo con l'idrogeno. Questa componente dell'impianto non è legata al nucleo del reattore.
I servizi dell'Ispettorato federale della sicurezza nucleare (IFSN) sono stati informati della panne e delle misure attuate per affrontare i nuovi problemi alla centrale argoviese che si aggiungono a quelli della vicina Beznau.
Diem/ATS
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