Selasa, 12 Maret 2013

Chernobyl Nuclear Accident


Chernobyl Nuclear Accident



Relentlessly between 1990 and 1998, has been diagnosed as cases of mumps cases in 1791 Ukrainian children, who live in the area surrounding the Chernobyl nuclear power plant. Experts have linked all of these cancers by the Chernobyl nuclear accident. Expected to be found more and more kasus.Kecacatan at the Chernobyl nuclear power plant design using nuclear reactors known as RBMK-1000, built and designed by the Soviets, and then until now not used anywhere in the world. RMBK-1000 using blocks of graphite instead of water cooled ya. It was developed for two reasons: to generate electricity, and also provides the level of weapons plutonium for the Soviet Union continuously-this is one of the byproducts of the graphite system. During the cold war, the Soviet Union is determined to produce weapons of mass destruction, the equivalent of the U.S. nuclear weapons program. With plutonium supply continuous and reliable then the Soviet Union could constantly expanding their nuclear arsenals and simultaneously provide electricity for their country.
However, the problem with the RBMK-1000, as stated in the report "Chernobyl Ten Years On," which is that the design is very dangerous, and has no tolerance for operator error, nor do I have a routine operation for safety terpasang.Singkatnya error, the type of nuclear reactors are built and used in the United States and elsewhere, if the reactor lost cooling water from, the reactor was started to reduce the speed of fission (power production) is in itself trying to reduce the heat caused by reduced cooling. In the RBMK-1000, if the system loss of coolant, it will lead to faster cleavage, and the core becomes hotter. This is really contrary to the ideal response to the reduction of cooling water, and many countries are trying to convince the Soviet Union can be said to play with fire (nuclear). It is clear that the Soviets were willing to take that risk in order to obtain plutonium
On 26 April 1985, at 1:24 AM, Unit 4 of Chernobyl Nuclear Power Plant exploded. There were two huge explosions within 3 seconds, which had collapsed the roof of the building. Radioactive gas, collapsed buildings, and material from the reactor building, was thrown into the air as high as two-thirds mile (1 km). Pieces flake reactor fuel very hot flying through the air and fell within almost reached 1 mile (1.6 km) away, sparking a fire that lit up the radioactive area.
Two workers were killed instantly, and twenty-nine people wallow in the radiation is so high that they can be said to have died from it. although most of them are still alive for several weeks in the hospital, and suffering the final stages of this extreme intoxication. Hundreds of thousands of people were evacuated from the surrounding towns, countless animals are destroyed to avoid swallowing meat that has been exposed to toxic radiation, and many European nations refused shipments of rice from any area which is close to the Ukraine, asking the residents for wash all fruits and vegetables, even though they are native to the country of their own.
Chernobyl accident occurred because some workers trying to experiment informally and low power, which includes emergency cooling system shut down action. By the time everyone realizes that the core is too hot, it was too late to distort this process (they are not careful with the heat allowing the channel bend where the fuel pieces should go in there) the next thing they know is that the roof had flown, two people were killed and a deadly gas cloud has spread across the region.
Radioactivity from the Chernobyl explosion eventually detected by the United States. The leader of the Soviet Union did not say a word about this explosion until two days later, on 28 April, after Swedish scientists reported an increase in radioactivity in the atmosphere of their own country, and then trace it back to Chernobyl. Even after they preached what had happened, the Soviet people did not have a way to respond to such a monumental disaster.
Chernobyl reactor was finally put in a concrete structure known as the sarcophagus. More than six hundred thousand workers, known as the "Liquidator" working to clean up the reactor and sarcophagus construction. Cement layer is built poorly, and began terjad kebocorari radiation several years after construction was completed. The more work done to ensure kekokohannya, temy. safety is still questionable. Chernobyl nuclear accident was the worst nuclear accident sepanta the period. The accident happened shortly after the accident at Three Mile Island, this further reinforces anti-nuclear movement, and has inspired many nations to create new safety rules for the construction and operation of new nuclear power plants.
As a long-term health effects, the spread of radiation from Chernobyl is estimated to result in hundreds of thousands of new cancer cases, and tens of thousands of them will end in death.
NEA report summarizes the impact of the Chernobyl accident in the initial report in 2001:
History of the modern industrial world has been repeatedly affected by a disaster equal to or even worse than the Chernobyl accident. However, this accident has a significant impact on society and people. This not only causes severe health consequences, but also cause damage to the industry and the economy short-term and also long-term consequences in terms of socio-economic turmoil, psychological distress, and damage to the image of nuclear energy. It is expected to last for a long time.
Fifteen years after the Chernobyl accident, the international community is still learning and trying to generalize this to the case of smaller accidents. Hopefully, this lesson is never repeated in the event the size and scale of Chernobyl.

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