CANDU REAKTÖRLERİNDE ThO2 ve 233UO2 YAKIT KARIŞIMI KULLANIMININ İNCELENMESİ

Yıl 2007, Cilt: 22 Sayı: 3, 0 - , 15.02.2013

Necmettin Şahin

Öz

Bu çalışmada; (Th+233U)O2 yakıt karışımının CANDU reaktörlerinde kullanılabilirliği ve reaktör başarımınaetkisi araştırılmıştır. Bunun için yakıt olarak %98 ThO2 + %2 233UO2 yakıt karışımı kullanılmıştır. Nötronikveriler, tek boyutlu SCALE 4.4a nükleer hesaplama kodu yardımıyla elde edilmiştir. Reaktör kritiklik ve yanmaderecesi değerleri tam güçte 20 yıl için hesaplanmıştır. Yapılan hesaplamalar sonucunda, reaktör kritikliğinink∞=~1,3 le başladığı ve 2. yıl sonundan itibaren 20 yıl boyunca k∞=1,06 sınır değerinin üzerinde olduğugörülmüştür. Yanma derecesi 2. yıl sonunda 45.216 MW.D/MT ve 20. yılın sonunda 558.061 MW.D/MT gibiçok yüksek bir değer elde edilmiştir. Bu çalışma, toryumun çok düşük oranda (%2) fisil izotop karışımlarıylaCANDU reaktörlerinde yakıt olarak kullanılabileceğini göstermektedir.

Anahtar Kelimeler

Candu reaktörü, toryum, uranyum

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