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Your assignment is to prepare and submit a paper on power plants at fukushima and onagawa. A lot of lives were lost due to the earthquake and tsunami. Numerous people lost their families and friends. The condition was made worse by leakage of radioactive materials from the Fukushima- Daiichi power plant. The Daiichi disaster is often considered as a natural disaster for it caused by two natural disasters with high magnitudes. While the other nuclear stations survived, the Daiichi power station succumbed to the combined force of the earthquake and tsunami (Lüsted, 2011, p. 6- 11).

Tokyo Electric Power Company (TEPCO) is in charge of the Fukushima- Daiichi power plant. This nuclear power station had six nuclear units in total. Another nuclear power station of Fukushima, Daini consist of four nuclear units. The nuclear reactors situated in Daiichi were basically boiling water reactors (BWRs). The first five reactors bore General Electric Mark-I designs. Nuclear powers were generated for commercial operations. Uranium- 235 and plutonium- 239 are nuclear fuels. These compositions are heavy isotopes and producing energy through the fission of nuclei. Each such reaction results in the generation of more fusion events, which in turn supports a continuing nuclear chain reaction. Fusion products that are produced “s iodine- 129, iodine- 131, strontium- 90, and cesium- 137”. Whenever shutting down is required, control rods are inserted. These rods function by absorbing the neutrons. During nuclear reactions, heat is produced by radioactive decay. Therefore, it is necessary to keep on pumping water and circulate it so as to reduce the decay heat. Normally, the reactors take a few day’s time to cool down fully and reach the “cold shutdown” state (Holt, Campbell and Nikitin, 2012, p. 4).

When the earthquake started on 11th, half of Daiichi nuclear reactors were automatically shut down and the other half were suspended from regular functions for routine inspections. However, all through the&nbsp.earthquake, Daini reactors were operating.&nbsp.

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