Radioactive Pollution — Prelims Strategy
Prelims Strategy
For Prelims, the strategy for Radioactive Pollution should focus on precise factual recall and conceptual clarity. Aspirants must prioritize understanding the basic science: what radioactivity is, the types of radiation (alpha, beta, gamma) and their characteristics (penetrating power, ionizing ability).
Key measurement units – Becquerel (activity), Gray (absorbed dose), and especially Sievert (biological effect) – are frequently tested. Memorize the approximate half-lives of significant radionuclides like Iodine-131, Cesium-137, Strontium-90, and Plutonium-239, and their specific biological targets (e.
g., Iodine-131 and thyroid). Locations of major Indian nuclear power plants (Tarapur, Kalpakkam, Narora, Kaiga, Rawatbhata) and their types (PHWR, BWR) are important. Understand the functions and mandate of the Atomic Energy Regulatory Board (AERB) and its establishment context (Atomic Energy Act, 1962).
Be familiar with the chronology and key facts of major nuclear disasters like Chernobyl and Fukushima (year, country, primary cause, key lessons). Also, grasp the classification of radioactive waste (LLW, ILW, HLW) and their general disposal methods.
Pay attention to current affairs related to nuclear energy, such as new plant approvals, international agreements, or incidents like the Fukushima water release, focusing on the 'who, what, when, where' aspects and their immediate implications.
Practice MCQs that test the differentiation between various units, sources, and effects, and be wary of trap options that confuse chemical and nuclear disasters.