F island nuclear power station is fundamentally different from the chemical explosion at chernobyl

Nuclear accident at chernobyl nuclear power plant
On April 26, 1986 early morning, located in Kiev of 130 km north of the chernobyl nuclear reactors melting combustion, causing explosions, radioactive material flowing leakage. After the accident, the former Soviet union blockade news, has been to Sweden detected in China to the radioactive material in excessive after the accident to exceed bid told. Ukraine in 1992, official data showed that best sunglasses more than 7000 people died in nuclear pollution.
The United States
Nuclear accidents at three mile island nuclear power station
On March 28, 1979 at 4 am, in the east of the three mile island nuclear plant in Pennsylvania second group of reactor operation indoor turbines stalled, the reactor core pressure and temperature lifts and caused a lot of radioactive material overflow. After the accident, in nuclear power plant of live near 200000 residents were forced to evacuate the area, shocked by the United States, also make the United States had to reflect on nuclear power development plan. Three mile island nuclear power plant and mlb jerseys the first nuclear power plant by fukushima is the second generation of reactors.
The morning paper reporter LiuZeFan
By yesterday evening, Japan official preliminary determination that the affected the blessing of the first large island nuclear power plant the bomb explosion belongs to hydrogen, Japanese officials had evacuated to expanding the scope of the 20 km surrounding nuclear power plant. Experts say, the blessing of the first nuclear power plant island different at the chernobyl plant in the in the same year, but if nuclear reactors in a massive explosion in the internal still impact, may even have spread to China. But as China and f island far apart, even if the radioactive material also won't arrived in China for human body to produce harmful effects.
influence
If a nuclear blast
And has limited impact on China
Fudan university nuclear science and technology, professor of morning paper reporter to YuanZhu books, said the Japanese the earthquake intensity bigger, automatic start TingDui system the reactor. "Nuclear reactor TingDui system is different from our daily life simple air valve closed, although the coal literally called 'TingDui', but in fact the fission reaction inside the reactor is still in, but strength reduced. Nuclear reactor cooling system by an earthquake without electricity, and, in the reactor interior temperature, cooling water into steam makes reactor pressure increase, and have to explosion." YuanZhu book said.
YuanZhu book think that, in not restore on cooling systems, power supply, under the premise of can only be taken directly to discharge atmospheric gases measures, and this will contain harmful to human body radioactive substances. "Because in normal circumstances, containing radioactive substances to after multiple filtering gas to safety standards to release. No filtered the harmful gas of the radioactive material content is filtered gas more than 70 times."
YuanZhu books to the morning paper reporter that for now fukushima nuclear power plant in our country has not nuclear leakage impact. "If the blessing of the island nuclear power plant has a serious really big bang, the main effect area is near nuclear power station a few tens of kilometers to one hundred km range. Radioactive substances may through the atmosphere general circulation effect on our country's, but because China fukushima from more than 2000 kilometers, distance is farther influence is limited," he said, "from the chernobyl nuclear power plant explosion situation, parts of Europe while detected radioactive material up, but not produce harmful effects on human body."
contrast
And 1979 years
The three mile island nuclear accident similar
Tokyo electric power company said local time 12 3 PM 36 points is made, the first nuclear power plant fukushima unit no. A workshop explosion, then rose white smoke. According to the preliminary survey the blast is hydrogen gas explosion.
F island happened after the first nuclear power plant nuclear leakage reminiscent occurred in 1986 from the former Soviet nuclear accident at chernobyl nuclear power plant. But according to the analysis of some domestic nuclear experts, blessing the first nuclear power plant at chernobyl nuclear power plant and the island of both types are not identical. F island nuclear power plants belong to boiling water reactor power plant, the technical relatively mature and more safe, reliable, and chernobyl nuclear power plant and nuclear power plant is of graphite, there are defects in design. The first nuclear power plant fukushima an explosion happened are hydrogen explosion, in the reactor pressure vessel from, and not cause reactor pressure vessel explosion directly. This is a chemical explosion, namely with oxygen concentration of hydrogen to achieve a certain-general is around 4%, his bums, but reactor chain reaction has been stopped, and at chernobyl in the chain reaction is out of control of the explosion, the two different at all. YuanZhu book on the morning paper reporter said: "in those days the chernobyl nuclear power plant is Russia explosion reactor explosion caused huge, internal directly influence."
And the first nuclear power plant fukushima similar is 1979 years of the accident at three mile island American nuclear power plants, both belongs to the second generation reactor.
Japan's kyodo news agency reported yesterday afternoon, the first nuclear power plant fukushima first reactor has also happened melt the reactor core. The reactor core melting is refers to the nuclear reactor temperature rise too high, cause the fuel rods melted, and damage accidents. Because of the blackout lose cooling water to the reactor core level fell, the fuel rods out of the water, fuel of radioactive material heat generation of not remove, and then temperatures continue to rise will lead to melt the reactor core. This is the nuclear power station possible accident is the most serious situation.
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