Although it may be misleading, the famous I borrow only the game title.
My interest in the disaster at Chernobyl has several origins. My curiosity, which leads me to know things, my interest in history, my passion for the subjects of scientific, cultural and human implications of that event, the strange and confusing childhood memories I have of ' age (I was 8 years old). And more recently, the discovery of a site Internet very interesting.
The site in question is as follows:
http://www.angelfire.com/extreme4/kiddofspeed/index_it.html
Oh, when the site address. According to my research has been repeatedly closed, but the author has always reopened in other locations. If the address is no longer active, the best thing is to type on Google: Elena Filatova Vladimirovnea. This is a Ukraine girl, known to be fond of motorcycling but especially for his passion as a photographer and historian, which has led to extensive research into what is the Zone of Alienation "(ie the area that extends around the central) and the plant itself. Its website contains interesting information, numerous photographs and several short stories.
As she reminds us, none of his photos (and video) are protected by copyright, and can be used freely (in fact, promotes the author herself). I'll just take the "borrowed" a couple of photos.
April 26, 1986, runs a tutorial of some danger, but already made other times you turn off the power supply of the plant to verify as the turbines would continue to rotate to produce energy.
Now, it's good for sommicapi understand how a nuclear power plant. Simplifying a lot, the reaction of nuclear fission (usually atoms of uranium-238) creates a strong heat. The core is "cool" with light-water in the process "vaporized." This steam starts to move those who are the turbines to produce electricity. It is therefore a mechanical work. The water is then recondensed then returned to the club. The reaction of decay (fission) of uranium must be kept under control, and this is usually achieved in two ways: the first is using water "heavy", ie the hydrogen atoms are deuterium, an isotope (in this case is also the coolant), the second is using the graphite rods. The latter is not more (in fact) used for security reasons I explain later. This much for
sommicapi; reference to those interested in specific readings.
During this exercise were many factors that led to the event, but they are all attributable to human.
First, as a rule in Communist countries (I do not want the leftists), the plant was built "save" where the need was felt ... in particular as regards security. Second, the use of graphite as a moderator of response, by its nature, when in the circuit (in practice are barriers that are lowered or raised in the reactor between the bars of uranium, occupying the space where there was water) causes an increase in reaction for a few seconds, when it should "limit" ... a problem at the time unknown. The third type of reactor, a RBMK, which has (I quote from Wikipedia) "a coefficient of empty dangerously so, this means that the vapor bubbles that form in water used as coolant, increase the nuclear reaction. Even worse, at low power, the positive coefficient of vacuum is not offset by other factors, making the reactor unstable and dangerous in these conditions ". Fourth, was also turned off the automatic switch off safety during exercise. Fifth, the presence of many staff lack the knowledge and skills needed to control a nuclear power plant. Sixth, the violation of many of the procedures of the plant itself. Seventh, the very poor maintenance of the station.
The second explosion that followed literally destroyed the reactor 4 of the plant. We could be here to speak in detail about how it happened, all the events point by point ... I will write instead of pure human factor / environmental.
The numbers on the victims (including certain allegations and, considering those to come from cancer caused by radiation) vary from report to report. The UN talks about the alleged 4000 ... I think that this number is well below the reality. The first victims Rescuers were among the firefighters who arrived to extinguish the fire (it will take nine days, since the graphite is difficult to contain) and those who were using helicopters to pour water and sand and whatever else ... present them without even imagine what they were facing, thanks to the blanket of silence erected by the communist authorities. We must remember also the "liquidators", a group created to do 650,000 people clearing wreckage and build the famous "coffin" that today hold the remains of reactor 4 locked inside even with all the uranium and plutonium is extremely dangerous, as well as all military personnel who worked on that day ... who knows how many are dead or with severe radiation sickness (also, virtually unaware of the dangers they faced).
The Zone of Alienation "(which officially stretches for 30 km from the station, but which in reality is much more extensive) is now a wilderness area, devoid of human population with the exception of a few hundred people who stubbornly decided to stay. The so-called "Red Forest" (near the station, so named because the trees became red because of the radiation) was demolished and buried. All the towns are now ghost towns in the area, including Prypiat, the city built 5 km from Central in 1970 to house its workers in the area, and that there were nearly 50,000. It is estimated that the area can return "Living" (ie the quantity of radiation is not dangerous) within 400-600 years, depending on estimates. At the time, while the streets are relatively safe, as they absorb the radiation, it is highly contaminated vegetation.
's sad to be so restrictive, and the consequences of the disaster you could write an encyclopedia ... but this is just a blog of thoughts, and purpose of this is to remember that too often the human race does not have the courage and dignity necessary to care for others and the world around him.
I invite you to visit the website of Elena Filatova, there are many photos and you can find information not otherwise available around, a voice that has experienced first hand the tragic events.
Central Chernobyl, from the point of the picture, the radiation is about 15-20 times higher than normal values \u200b\u200bthat can be found in any place in the world (in 2004 ). E 'visible the "sarcophagus", the concrete structure that prevents the release of further radiation, inside there is still a significant amount of radioactive material (including 1 ton of plutonium) The structure, built in a hurry fury at the time for obvious reasons, is beginning to give way, and you must plan structure a "permanent" that will contain the reactor for four millennia to come. The plant was finally extinguished in 2000. 
Prypiat of view, the ghost town, the tallest building in the city. Apart from the vegetation and the normal wear of time, has remained unchanged since the accident, when the entire population was evacuated without giving them no time to take away a suitcase. 50,000 souls forced to flee with a life to rebuild from scratch. The weather here has stopped, a kind of living postcard of 1986. 
The Ferris wheel of Prypiat. E 'became the symbol of a ghost town with its park. In that area, in fact, due to location and wind conditions, he concentrated the highest value of radiation during the incident. 
Ruins of the reactor 4 
0 comments:
Post a Comment