Calculate the RDT for a Pu fueled FBR of \(1200 \mathrm{MWt}\) power operating with \(80 \%\) capacity. The breeding ratio \((B R)\) is 1.1 with \(\mathrm{Pu}\) inventory of approximately 2 tonnes. The capture-tofission cross-section ratio \(\alpha\) of Pu fuel may be assumed as 0.3 . Also estimate BR required to get RDT of 10 years.