Essay Nuclear Energy And Nuclear Power

Essay Nuclear Energy And Nuclear Power

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Nowadays, Nuclear energy has gradually gain the favor from many people around the world. As of today, nuclear energy has supplied 12% of the world’s electricity, (R2) and in some countries, such as Japan, nuclear power plant is the major source of their electricity. The reason behind this phenomena is that nuclear power plant provides reliable and efficient amount of electricity and emits fewer greenhouse gas. (R1) However, just as every step accompanies sacrifices, the development of nuclear power plants has encountered numerous obstacles which caused consequences to human. One of the example is the Chernobyl Accident in Ukraine in the late 1900s.
The accident in the Chernobyl power plant happened in the morning of April 26th, 1986 as the local residents were just about to wake up. On the day before the explosion, the operator at the power plant started the scheduled shutdown to the reactor to show that the energy produced by the reactor itself was sufficient to support the operation of the whole nuclear process. During the process, the operators violated certain nuclear power plant safety procedures including shutting down the automatic shut-down mechanism, operating under fewer than 26 control rods. Furthermore, while the operator was decreasing the power level of the plant, he failed to set the minimum power level at 700 MW(t), the safe operating level. This failure resulted a sudden drop in the electricity output to a level of 30 MW(t). Upon seeing this reaction happened, the operator again performed a series of operations to raise the power level which led to a considerably huge amount of steam production. Due to the RBMK’s special design, the excessive steam production increased the reactivity in the reactor. In the end, th...

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...ower plant were evacuated about 36 hours after the accident had happened.(R8) Many of them already started to have radiation sickness. This delay of evacuation further showed that the Soviet local government had no preparation for an emergency situation in its nuclear power plant.
Today, the region near Chernobyl is still considered to be a forbidden zone for human activity with a Cesium-137 activity of 14.19g after 28 years since the accident.(R9) Although RBMK reactor is different from any other nuclear reactors in the world, many lessons has been learned from the accident and the accident itself also encouraged safety procedure in the design of a nuclear reactor. However, it is important to know that the Chernobyl accident was mainly caused by the positive void coefficient characteristic, lack of communication about safety procedure, and lack of emergency plan.

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