The Kalpakkam-based Indira Gandhi Centre for Atomic Research (IGCAR) achieved a major milestone when the fast-breeder test reactor (FBTR) was synchronised with the Tamil Nadu grid and was in continuous operation at full power capacity for 53 days from October 28 to December 21, 2000. It was actually synchronised with the grid on October 6, 2000 and was in operation on and off till February 4, 2001. Nearly 7.4 lakh units of electrical energy were generated during the 53 days of continuous operation.