NE SCIENCE & TECH BUREAU CHENNAI, APR 7 In a landmark achievement for India’s nuclear energy programme, the 500 MWe Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, successfully attained first criticality at 08:25 PM on Monday (April 6, 2026), marking the start of a controlled nuclear fission chain reaction and a decisive step … Continue reading Kalpakkam’s Defining Moment: India’s Fast Breeder Reactor Achieves First Criticality