The Fukushima Nuclear Power Plant Accident Caused Ecological Problems.

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The Fukushima Nuclear Power Plant accident caused ecological problems.

Abstract

The Fukushima nuclear accident triggered a large-scale nuclear leak, which has had an immeasurable impact on the global ecological environment. This article addresses, in depth, features of the Fukushima Nuclear Power Plant accident: during the incident, the impact of the incident, and aspects of the aftermath. Through an analysis of the Fukushima Nuclear Power Plant accident, certain referential and significant aspects of the nuclear industry are clear.

Introduction:

In a strong earthquake, which occurred on the afternoon of March 11, 2011, the Fukushima Daiichi Nuclear Power Plant in Japan was severely damaged; this led to a leakage of radioactive substances, causing considerable concern around the world. In recent years the promotion of a low-carbon economy has resulted in nuclear power plants being seen as one of the best producers of low-carbon energy; the accident has raised Governments’ concern. A study of the impact of the Fukushima Daiichi Nuclear Power Plant accident on the surrounding environment, as well as how great significance in promoting the development of a global nuclear future. [1]  

1. The Fukushima Nuclear Power Plant: the whole story.

The Fukushima Daiichi Nuclear Power Plant used the early BWR (Boiling Water Reactor), the standard was low, and had technical defects; poor security was the cause of the accident. The main reason for the accident was the design of the nuclear power plant which did not take into account the double impact of a powerful earthquake and consequential tsunami. In fact, the earthquake did not completely destroy the nuclear power plant; it was the tsunami that followed that destroyed the emergency diesel generators, and caused the whole plant to lose all its internal and external AC power supply. The Fukushima Daiichi nuclear reactor used water as a coolant and moderator, but the water was boiling in the reactor and changed into steam in the turbine generator. The tsunami led to the loss of the emergency power supply, and the failure of the necessary cooling of the reactor after shutdown. This led to an elevated temperature and a pressure increase; for safety it had to release the steam to release the pressure. The loss of coolant, which it could not efficiently replace, resulted in part or all of the fuel being exposed. BWR steam with radioactive substances were discharged directly through the pressure vessel dry well and then released into the atmosphere. Due to the loss of power, reactor waste heat could not find an appropriate way to escape and the temperature of the core fuel rose causing the shell zirconium to react with steam to produce hydrogen. The hydrogen was released into the plant, and continued to accumulate, finally leading to the explosion in the plant. After the accident, the core melted and was destroyed; this then led to a further expansion of nuclear contamination. [1]

2. The Fukushima Nuclear Effect on Humans

Physicist Kirby Kemper, from Florida State University, said that if there was a complete nuclear reactor core melt-down, some of the most radioactive substances, such as uranium and other heavy metals, would drop to the bottom of the pressure vessel, these substance would not be emitted into the atmosphere, and could, by nuclear radiation clean-up personnel, be special process cleaned. However, some of the radioactive chemical substances would be released, fourth grain of sand size particle morphology, these substances include iodine-131, strontium-90, and cesium-137. These are a great threat to the human body, because these radioactive substances can imitate the elements required by the human body’s natural tissue components, such as radioactive iodine-131, and easily enter into the body’s tissues and organs. Radioactive iodine under certain conditions can be rapidly dispersed in the air and water. However, iodine-131‘s half-life is only eight days,...
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