India’s first indigenous Fast Breeder Reactor at Kalpakkam achieves criticality. Here’s how it boosts the three-stage nuclear programme and thorium plans. The vital second stage of India’s three-stage nuclear programme got a boost Monday with the country’s first indigenous Fast Breeder Reactor (FBR) at Kalpakkam in Tamil Nadu attaining criticality. Attaining criticality, or going critical, means the in... [7553 chars]