Nuclear Energy & Reactor Technology
Nuclear energy harnesses atomic binding energy through controlled nuclear fission, predominantly utilizing Uranium-235 and Plutonium-239 isotopes. Commercial reactor designs include Pressurized Water Reactors (PWR), Boiling Water Reactors (BWR), and Pressurized Heavy Water Reactors (PHWR), which utilize heavy water ($D_2O$) as both moderator and coolant. India's Three-Stage Nuclear Power Program, formulated by Dr. Homi J. Bhabha, strategically utilizes natural uranium in Stage 1 (PHWRs), fast breeder reactors (FBRs) fueled by plutonium in Stage 2, and advanced thorium-based reactors (AHWRs) in Stage 3 to exploit vast domestic monazite sands in Kerala. Nuclear fusion research advances globally through the International Thermonuclear Experimental Reactor (ITER) project in Cadarache, France.
Key Concepts & Examination Highlights
- Dr. Homi J. Bhabha formulated India's Three-Stage Nuclear Power Program to transition from natural uranium PHWRs to fast breeders and thorium reactors.
- The Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, represents the operational core of India's Second Stage nuclear program.
- The ITER facility in Cadarache, France, is the world's largest magnetic confinement plasma physics experiment (Tokamak) researching nuclear fusion.