Causes of nuclear accidents?
Reactor designers try to anticipate every possible fault route and ensure the design is robust enough. Risks such as earthquakes and aircraft crashes are assessed. Earthquakes are particularly likely in some countries, Japan for example, and design will be aimed at ensuring the reactor primary circuit is strong enough to withstand the forecast forces developed, in an earthquake of an agreed level.
Generally however accidents have been caused by non standard operations (Chernobyl), or poor instrumentation (Three Mile Island). Avoidance of accidents does require well thought out operating procedures, and staff well trained who can work out what is happening in an unusual event, combined with reliable instruments.
Generally however accidents have been caused by non standard operations (Chernobyl), or poor instrumentation (Three Mile Island). Avoidance of accidents does require well thought out operating procedures, and staff well trained who can work out what is happening in an unusual event, combined with reliable instruments.
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The term "Broken Arrow" is used to indicate a nuclear accident involving a nuclear weapon that does't pose the threat indicated.. The term "excursion" (as in nuclear excursion) or "criticality accident" is applied to a nuclear reactor or nuclear material accident, respectively.
The cause of an accident is when a situation or conflict arisespurely due to randomness and when conditions are more likely tosupport the accident. If there is harm, damage, or injurysustained, it is more than often completely due to chance. Answer: Number one cause since the invention of the auto…mobile remainsdistracted drivers. With cell phones, texting, GPS displays, Videoscreens, in-car computers, and so forth its believed that the rateswill continue to rise. Answer: Causes of Accident: Primarily, accidents are caused by people. Equipment may beinvolved, but people handle the equipment. Most accidents are theresult of Carelessness, Inexperience, and/or Wrong attitude. Action Plan to Deal with Accidents: 1. Keep an Emergency Kit in Your Glove Compartment. 2. Keep Safety First. 3. Exchange Information. 4. Photograph and Document the Accident. 5. File An Accident Report. 6. Know What Your Insurance Covers. ( Full Answer )
A steam explosion followed by graphite fire that destroyed an RBMKnuclear power reactor, dispersing most of the radioactive materialin the reactor's core across the Ukraine and much of Europe. The firefighters and many other emergency workers called to thesite died from radiation poisoning. The caus…es of the disaster are complex including an unsafe design,improperly performing a test, repeated failure to follow safeoperating procedures, having a manager in charge of the test withno nuclear reactor experience (his training was in hydroelectricpower), etc. ( Full Answer )
The worst nuclear accident in history happened at the ChernobylNuclear Power Plant in Chernobyl, Ukraine, on 26 April1986 . An explosion and fire released massive amounts ofradioactive particles into the atmosphere. The deadly radiationspread over Western USSR and much of Europe. The effort to co…ntainthe contamination cost 18 billion rubles (~18 billions USD.) Theaccident resulted in 31 deaths at the site of the explosion.Even today, long-terms affects such as deformities and cancer arestill an issue. ( Full Answer )
When a plant for nuclear power (breaking atoms in fission) explodes because of a malfunction within the pipes as the nuclear reaction takes place. It super-heats, explodes, and often shoots dangerous gases into the air for days, even weeks, that can cause radiation poisoning among other problems.
First off, nuclear criticality refers to a fission chain reaction, such as in a nuclear power reactor. The fission of a nuclear bomb, in contrast, usually involves a level of super-criticality, because more neutrons are being produced than when the reaction was started. Power plants' reactors contai…n less-enriched fuel (3% concentration of fissile uranium) than a bomb (99% conc.) since they're only trying to heat up water to 550 degrees for steam-- not to burn up a city. However, when we started harnessing the atom for electricity, trying to get the concentration of fuel just right proved to be tricky. You've heard of critical mass? This is an amount of a particular form of uranium that is needed for criticality to occur.. Once when some uranium fuel was being mixed up, it stopped stirring; imagine if you add sugar to iced tea, stir it, then look to see the undissolved sugar swirling in the bottom of the glass-- when the fuel stopped being stirred, the uranium fell out like sugar, gathered at the bottom, and the mixture "went critical" unexpectedly (Flash / Woof). This was a criticality accident , and workers in the immediate vicinity were real unlucky. This was a tough lesson, and they changed methods so that this accident won't be repeated.. Interesting stuff-- for more nuke info, research Oak Ridge or NRC's website . ( Full Answer )
Iodine tablets are used in a nuclear accident to saturate the thyroid with non radioactive iodine. During a nuclear accident, radioactive iodine is released and the critical organ in the human body is the thyroid gland. Therefore if the thyroid is already full of non radioactive iodine the radioacti…ve iodine can not be absorbed. ( Full Answer )
The Chernobyl Nuclear Power Plant underwent a level 7 event - the worst accident so far. The plant, located in the Soviet Union near Pripyat in Ukraine lost its number four reactor on 26 April 1986. A link to the Wikipedia article on the accident is provided.
The only thing that can be said about the short term effects of a nuclear accident is that there is the possibility that some one might suffer from radioactive poisoning. There are a number of different types of nuclear accidents, and the only thing they all have in common is the presence of radio…activity. The numbers of different types are probably too numerous to list. Some types include: Nuclear meltdown Accidental loss of nuclear waste Loss in transit of nuclear materials Accidental distribution of radioactive materials Accidental exposure to radioactive materials that were improperly disposed of Accidents in laboratories or hospitals. Industrial accidents involving radioactive materials. etc.. The International Nuclear Events Scale (link below) rates nuclear accidents according to severity, from 0 (a below scale event of no significance) to 7 (wide spread off site impact). The Chernobyl Disaster is the only accident so far to have been rated 7. The Kyshtym Disaster is the only one rated number 6, and it was not at a nuclear power plant, but rather a reprocessing facility. Two of the three accidents rated 5 were at nuclear power plants (including Three Mile Island). The other, however, happened because radioactive materials were improperly salvaged from abandoned medical equipment, resulting in the deaths of several people, who thought the dust that glowed blue in the dark was pretty and used it as a cosmetic (GoiÃ¢nia accident). A fair number of the so-called Radium Girls died, but they were not part of an accident that was rated because it preceded the term of the rating system. The short term effects were radiation poisoning, leading tot the deaths of several people. A case of improper disposal of radioactive materials in New Jersey was also not rated. The materials were discovered because of cases of radiation poisoning leading to the deaths of three people. The site had to be cleaned up, a process on about the same scale as the decommissioning of a nuclear power plant. ( Full Answer )
What caused the accident that killed 20 people on the Russian nuclear-powered submarine in November of 2008?
Information is still being sought as to the exact number of casualties and what actually happened. Early word is that a firefighting system spontaneously and erroneously became activated at some point during evaluation operations at sea. It is probable that it displaced air in portions of the submar…ine, and individuals there suffocated. Links are provided below. ( Full Answer )
Three main routes: 1. Good design. The overall concept has to be well thought out, and big decisions like secondary containment decided on. Then it is a matter of working out all possible failure sequences, and showing that major accidents are reduced to a probability of less than 10 -6 per annum. …This analysis relies on a multitude of assessments of, for example, properties of materials and how they behave in possible conditions in the plant, especially in the primary circuit. Stress analysis is very important and must take account of thermal cycles and vibration levels. Also the behaviour of materials in possible chemical conditions. The possible earthquake levels in the locality need to be assessed and applied to the design to find any weak points. The control and instrumentation must be assessed for the required functions and made reliable enough. And so on, you get the idea I expect. 2. Construction: it is very important to make sure the plant is actually built to the required specification, the correct materials used, and techniques such as welding must be fully inspected and recorded. 3. Operation. The operators must be well trained and supervised, and have the correct operating manuals, and have had training in what to do in unusual conditions. The owners should also have a team of head office engineers who can continuously assess that the plant is being run correctly, and analyse for any improvements to be made in the plant. The above all applies to the owners and builders. In addition there must be an independent body who give the licence to operate and regularly examine the plant and operations for compliance. This is the NRC in the US and the NII in the UK, but all countries must have such a body. ( Full Answer )
In terms of shear damage, which can still be felt in terms of nuclear fallout today, the Chenobyl meltdown is arguably the worst nuclear meltdown. For more information, look up Chenobyl meltdown at wikipedia.org Another bad accident was the partial meltdown at Three Mile Island. You could look that …up on the wikipedia too. ( Full Answer )
You are probably thinking of Chernobyl. This is actually in the Ukraine, but at the time of the disaster there it was part of the Soviet Union. I'm not aware of any severe accidents in Russia as it is now. However accidents like Chernobyl have international repercussions because the fallout can be c…arried across national boundaries by the weather. In that case, with the Soviet government's secrecy policy, the fact it had happened only became known by picking up traces in countries like Sweden. The fallout covered Scandinavia and as far as the UK, we had a long period when sheep grazing in Scotland and the north of England were contaminated. ( Full Answer )
A nuclear accident is an event in which there is a loss of control of radioactive materials with a possibility of radioactive poisoning (there is a related link below). It is not the same as a radiation accident, which is very limited in nature. There are a number of causes of such events, ranging f…rom equipment failure and human error to loss of coolant or spillage in an accident in transportation. A major nuclear accident happens when the core of a nuclear reactor is damaged by a meltdown or partial meltdown. But there are other types of nuclear accidents, including loss of radiological materials intended for medical use, as happened in the GoiÃ¢nia accident, in Brazil. Nuclear accidents are rated according to an International Nuclear Events Scale (see related link below). This scale rates events on a scale of 1 to 7, 7 being worst, and numbers 4 through 7 are for accidents. An accident with local consequences is rated at number 4. Number 5 is an accident with wider consequences, and the Three Mile Island accident was of this type. Number 6 is assigned to what is called a Serious Accident. Number 7 is assigned to a Major Accident, and the Chernobyl Disaster was of this type. ( Full Answer )
The only ones I know of are: 1. Windscale air cooled reactor in UK - caught fire(early 1950's) 2. Three Mile Island power plant, PA, partial fuel meltdown, 1979 3. Chernobyl Ukraine, massive reactor explosion due to steam pressure surge, 1986.
There are many ways a nuclear accident may occur, however most nuclear power plant accident occur due to problem in an reactor.
The Chernobyl Nuclear Power Plant Disaster was one of the most tragic event in the history.This accident was a nuclear reactor accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine (then part of the Soviet Union ). It is considered to be the worst nuclear p…ower plant disaster in history and the only level 7 event on the International Nuclear Event Scale . It resulted in a severe release of radioactivity following a massive power excursion that destroyed the reactor. Most deaths from the accident were caused by radiation poisoning . On 26 April 1986 at 01:23 a.m. ( UTC+3 ) reactor number four at the Chernobyl plant, near Pripyat in the Ukrainian Soviet Socialist Republic , exploded. Further explosions and the resulting fire sent a plume of highly radioactive fallout into the atmosphere and over an extensive geographical area. Four hundred times more fallout was released than had been by the atomic bombing of Hiroshima . The plume drifted over large parts of the western Soviet Union , Eastern Europe , Western Europe , and Northern Europe , with some nuclear rain falling as far away as Ireland . Large areas in Ukraine , Belarus , and Russia were badly contaminated, resulting in the evacuation and resettlement of over 336,000 people. According to official post-Soviet data,  about 60% of the radioactive fallout landed in Belarus . The accident raised concerns about the safety of the Soviet nuclear power industry as well as nuclear power in general, slowing its expansion for a number of years while forcing the Soviet government to become less secretive .The countries of Russia, Ukraine, and Belarus have been burdened with the continuing and substantial decontamination and health care costs of the Chernobyl accident. It is difficult to accurately quantify the number of deaths caused by the events at Chernobyl , as over time it becomes harder to determine whether a death has been caused by exposure to radiation. The 2005 report prepared by the Chernobyl Forum , led by the International Atomic Energy Agency (IAEA) and World Health Organization (WHO), attributed 56 direct deaths (47 accident workers, and nine children with thyroid cancer ), and estimated that there may be 4,000 extra cancer deaths among the approximately 600,000 most highly exposed people. Although the Chernobyl Exclusion Zone and certain limited areas remain off limits, the majority of affected areas are now considered safe for settlement and economic activity. ( Full Answer )
speeding, if the car's brakes are broken, you don't know how to drive, not following the laws of driving, slippery roads, no light, raining, snowing. Another VIew: The biggest single cause of vehicle accidents is INATTENTION TO DRIVING.
By design in depth to take account of all failure possibilities providing appropriate safety systems, and routine inspections during the plant life, and working to approved operating instructions.
The only ones I know about are Chernobyl (MAJOR) and Three Mile Island Pa, which was a commercial write off but little risk to population. Could add Windscale in 1957 where a graphite air cooled pile caught fire, but that was not a power plant, it was similar to the old Hanford piles in the US, for… plutonium production ( Full Answer )
If you mean accident with nuclear weapons, the US codename for that is Broken Arrow . One example is the incident at Palomares Spain, where a US Bomber carrying 4 hydrogen bombs collided with a refueling tanker. Both planes crashed and the unarmed bombes fell on the Spanish coast. 2 landed inland… with physical damage but no explosion, 1 landed inland with chemical explosion in primary on impact, and 1 landed in the water and remained lost for a few months until located by divers. Another example iis the Thule Greenland accident, where a B-52 with unarmed hydrogen bombs had an onboard electrical fire and the crew bailed out. The plane then crashed on the ice and at least one bomb had a chemical explosion in its primary. ( Full Answer )
There have been a number of accidents at nuclear plants, of a number of different types. For most people, the most feared accident is a nuclear meltdown, in which some part of the fuel in the reactor overheats and melts. There have been two large scale meltdowns, and at least nine smaller ones. The …worst meltdown was the Chernobyl Disaster of 1986, in the former Soviet Union. The reactor exploded and large amounts of radioactive material were released into the environment. This accident caused the evacuation of 200,000 people and rendered about 20,000 square miles (50,000 square kilometers) of land unusable for a period of years. Damage estimates have been as high as a trillion 1995 US dollars. The other was the Three Mile Island accident in Pennsylvania in 1979, in which radioactive krypton gas and iodine-131 were released, causing (according to at least one article in a peer-reviewed medical journal) a statistically significant increase of cancer in the area downwind for ten miles (16 km). There have been other partial meltdowns that did less damage. Four of these were in the United States, and two in the UK. Others were in Canada, Czechoslovakia, and Switzerland. In addition to meltdowns, there have been a large number of releases, leaks, and spills of radioactive contaminants, which were unplanned. The number of these spills and leaks is very high. They probably have happened at all operational nuclear facilities; over a quarter of nuclear plants in the United States are leaking radioactive tritiated water into groundwater at their sites. Waste materials also pose a hazard, and there have been some relatively minor accidents involving waste. A worst case spill of waste could be as destructive as a meltdown, and though no accident close to such a scale has happened, the length of time during which such an event could take place (over 10,000 years) makes storage of waste problematical. ( Full Answer )
by proper design, proper functioning of the nuclear power plant andby adopting in accordance proper safety measures for the operatorsand giving them proper training.
There has not been a nuclear accident in Russia itself, but on April 26, 1986, when Russia was part of the Soviet Union, a very bad nuclear accident happened in Chernobyl, Ukraine, which neighbors Russia. Radiation was spread all over Europe and North Africa. Winds at the time carried nuclear materi…al west, towards the more densely populated area of Europe. Many people died because of the long term effects of the radiation, and cancer rates spiked in the next few years. Many deformed babies were born in neighboring countries. Belarus was hit particularly bad, with many radiation poisonings. ( Full Answer )
USS Thresher (SSN-593), lead ship of her class, was lost on April 10, 1963, during post-shipyard sea trials. The loss of the Thresher (believed to be the result of a chain of events beginning with a pipe joint failure and frozen air lines) led to the SUBSAFE Quality Assurance program, as well as re-…engineering of critical systems and emergency procedure changes. ( Full Answer )
The reactor that had the explosion in entombed. The actual structure is problematical because it will not last nearly long enough. The other reactors have remained in use since the accident. The area around Chernobyl was, and remains, evacuated. A broader area has been taken out of use for various p…urposes, such as agriculture. Forest fires have to be carefully dealt with because the fires put radioactive materials into the atmosphere. People in the area have health problems that require attention, and the people who have not developed diseases need to be checked carefully for them. ( Full Answer )
To prepare for a nuclear accident: . Have an evacuation plan. Know what routes to take and be ready to choose one based on wind conditions. Have a way to use that route. It may be necessary to depend on public transportation, so find out how to do that. Best preparation will include a kit with eme…rgency materials easily accessible as you leave. . Consider that an event may take place at night, and be ready for that. Flashlights, especially windup flashlights, are good to have. The emergency kit might include some clothing along with everything else. . Have potassium iodide tablets. They do not protect you against everything, but they do protect your thyroid gland against radioactive iodine. . Have a battery powered radio, and keep fresh batteries. Better might be a windup radio. . If there is no way to leave the area, stay indoors, do not open windows, and be prepared to stay there. The electricity may be out, in which case water might also be out, so have water and food that does not need to be cooked. . The best building to live in, if you cannot leave, would have a basement to stay in, and aluminum siding would be slightly better than other types because a few millimeters will stop beta particles. . Have respirators for adults and children, fitted in advance for specific individuals and with names on them. . Have a book explaining how to recognize radiation sickness and what to do about it. . Keep a book of prayers of whatever religion you believe in. Keep a list of religions if you don't have one - in the case of a nuclear accident, you may decide to get one. At the very least, learn to focus your thoughts on better things. ( Full Answer )
A nuclear event, such as an accident or war, is likely to produce a lot of radioactive iodine. The thyroid gland concentrates iodine, so any iodine that gets into a person's body is likely to end up there. The potassium iodide tablets provide more iodine than the thyroid can use, so the radioactive …iodine is not so likely to be retained in the body. So the potassium iodide reduces exposure to radioactivity. It protects only the thyroid, and it only protects that against radioactive iodine, but it is better than nothing. ( Full Answer )
A link to Aerospaceweb is below, which details a history of nuclear weapons incidents and accidents.
The answer your probably looking for is 'melt down' however amelt down is a very rare event and the worst form of 'nuclearaccident'.
Nuclear accidents are extremely dangerous. The accident at Chernobyl, for example, killed a large number of people and caused whole towns to be uninhabitable. Placing nuclear power in perspective, though, it is overall far safer than coal power. Coal is the largest source of energy worldwide and …coal mining, transportation, and pollution from use as a fuel cause a huge number of deaths each year. Mining of coal takes more than 6,000 lives each year in China, for example. Black lung disease causes about 4,000 early deaths each year in the US. Fine particle emissions are believed to cause about 15,000 early deaths in the US each year. ( Full Answer )
Yes, quite a few, most totally minor industrial accidents not even having anything to do with the reactor.
Thankfully there haven't been many nuclear accidents, however when they do happen they can be severe the worst nuclear accident/disaster was the explosion of reactor No.4 at the Chernobyl Nuclear power plant in 1986 on April the 26th.
The worst nuclear power accident in history, which occurred at the Chernobyl nuclear power plant in the Ukraine, will affect, in one form or another, 20 percent of the republic's population (2.2 million people). On April 26, 1986, at 1:23:40 a.m., during unauthorized experiments by the operators in …which safety systems were deliberately circumvented in order to learn more about the plant's operation, one of the four reactors rapidly overheated and its water coolant "flashed" into steam. The hydrogen formed from the steam reacted with the graphite moderator to cause two major explosions and a fire. The explosions blew apart the 1,000 ton (907 metric ton) lid of the reactor, and released radioactive debris high into the atmosphere. It is estimated that 3.5 percent of the reactor's fuel and 10 percent of the graphite reactor itself was emitted into the atmosphere. Human error and http://www.answers.com/topic/what-caused-the-chernobyl-accident# features (such as a positive void coefficient type of reactor, use of graphite in construction, and lack of a containment building) are generally cited as the causes of the accident. Thirty-one people died from trying to stop the fires. More than 240 others sustained severe radiation sickness. Eventually 150,000 people living near the reactor were relocated; some of whom may never be allowed to return home. Fallout from the explosions, containing radioactive isotope cesium-137, was carried by the winds westward across Europe. The problems created by the Chernobyl disaster are overwhelming and continue today. Particularly troubling is the fact that by 1990-1991, a five-fold increase had occurred in the rate of thyroid cancers in children in Belarus. A significant rise in general morbidity has also taken place among children in the heaviest-hit areas of Gomel and Mogilev. ( Full Answer )
The worst case scenario for dangers of Nuclear Power is a Meltdown. A Meltdown occurs when the core of the nuclear reactor reaches unstable temperatures usually related to a severe failure of the reactors cooling system. The effects of a nuclear meltdown depends on the safety features designed into …the reactor, newer reactors SHOULD be designed to make a meltdown highly unlikely and should be able to contain one should it happen. The worst documented nuclear meltdown is probably Chernobyl, in April of 1986 reactor number 4 suffered a catastrophic power increase, leading to explosions in the reactor core. This expelled large amounts of radioactive fuel and core materials into the atmosphere and ignited the combustible graphite moderator which increased the emissions of radioactive particles into the atmosphere. The radiation levels in the worst hit areas of the reactor building have been estimated to be 5.6 roentgens per second (R/s), which is equivalent to more then 20,000 roentgens per hour. A lethal dose is around 500 roentgens over 5 hours, so in some cases unprotected workers received a fatal dose within minutes. ( Full Answer )
Obviously depends on the severity of the accident. In the case of Three Mile Island (1979) there was no reason not to go on running the other unit on site, though the damaged one will never be restarted. In the case of Chernobyl (1986) the damage was so great that the whole site was shutdown, four r…eactors, and surrounding areas evacuated. This is a permanent result as far as I know. ( Full Answer )
An nuclear bomb is purposefully release to pulse out damage. A nuclear accident, on the other hand, is an accident when a nuclear source (usually referring to a nuclear plant) either blows up or leaks. Although it is normally weaker and less dangerous than a nuclear bomb, a big enough explosion or a… serious enough nuclear meltdown can break that limit. ( Full Answer )
Operator error due to inadequate understanding (usually a training problem) . Operator error due to misreading instruments (sometimes a design error, sometimes a training problem) . Operator error due to management error ("just following orders" syndrome) . Reactor malfunction. . Reactor damage …due to external events (e.g. earthquake & tsunami as in Japan) TMI was as follows: 4 (stuck valve), 2 (thinking light on control panel said valve was closed), 1 (turning off emergency cooling water, letting core run out of coolant). Chernobyl was as follows: 3 (management ordered all emergency systems disabled to allow retry of test), 5 (power demand in Kiev delayed test), 1 (new shift proceeded with test without adequate understanding of marked up procedure), 3 (when operators hesitated to proceed due to safety issues management threatened to replace them), 1 (operator pressed SCRAM with too many rods removed for design, triggering steam explosion instead of shutting down reactor). Japan 2011 was as follows: 5 (quake), 5 (tsunami), (need to wait and see rest of sequence after failure analysis report is written). ( Full Answer )
Between 1945 and 1987, there were 285 nuclear reactor accidents, injuring over 1,550 people and killing 64.
No one can deny that there might be the possibility of an accident, even if we follow the safety regulations every day. Because of that, we have to prepare for accidents by making sure that there is a plan for all possible situations and conditions. To keep from accidents like Chernobyl from ever ha…ppening again, it is important for nuclear power plants to have a good design. The overall concept has to be well thought out. Then you have to work out all possible things that could fail, and how different materials behave in different conditions in the plant. When you install a safety system to prevent one thing, you also have to make sure that that safety system doesn't make it likelier for something else to go wrong. It is also very important that you find out what happens and could happen when the plant is under stress. Also to be taken into account, is what happens to the plant when it is exposed to different natural disasters. As well as the design of the plant, the construction of the plant is also very important. To make sure the plant is actually built to the required specification, and that the correct materials are used, and the required techniques are used. The operators who work at the plant must also be well trained and supervised, and have the correct operating manuals, and have had a lot of training in what to do in unusual conditions. Its important for operators to not be too confident. Nuclear power plants must also have multiple systems, so if one fails; the other can back it up. ( Full Answer )
The Fukushima Daiici Accident started on March 11, 2011, when the plant was hit by a powerful earthquake, followed in about an hour by a tsunami wave nearly three times as high as anything that had be envisioned. A number of later accidents were caused by these events over a period of days and weeks…. There is a link below to a timeline for the events. ( Full Answer )
Those most at risk in a nuclear energy accident are the workers at the nuclear facility itself.
There are going to be some economic losses as Japan struggles to control and contain the accident, and as they seek new sources of power to replace that which was lost. The radiological consequences are probably not going to be that bad, due to the massive dilution effects of the atmosphere and o…cean, but we don't know yet, because the levels are still too low to know anything with absolute certainty. The biggest consequence is that this is going to impact world wide opinion about the safety of nuclear power, right at a critical time when nuclear power is what we need to move forward. We are just now getting over the negativity of Three Mile Island and Chernobyl, and now this unfortunate accident at Fukushima Daiichi happens. It is probably going to set us back 20 years, and we can't really afford that right now. Yes, we do need to understand what happened, so that we can protect ourselves going forward. What we also do need, however, is sanity. There is far too much misinformation and misunderstanding about the real issues involved on the global scale. ( Full Answer )
The Fukushima Nuclear accident occurred on March 11 of 2011. It was destroyed by both a tsunami which took out the cooling system and an earthquake which then completely destroyed the plant
Idaho Falls, Research Reactor SL-1. 1961. Prompt criticality, steam explosion, and partial meltdown when control rod removed too far. Three men killed outright. 80 Ci I-131. 1,100 Ci mixed fission byproducts, recovered and buried. INES level 4. Even though Three Mile Island was INES level 5, and c…ost more to recover from, there were no deaths. ( Full Answer )
Chalk River, December 12, 1952. Control rod failure, combined with operator errors, caused a power excursion and a buildup of hydrogen, that was not handled properly by the gas control system, which subsequently exploded, releasing about 30 kg of uranium and 4500 tons of radioactive water. The opera…tors purged the heavy water, D 2 O, which is used as a moderator, shutting down the reaction in about 30 seconds, but the hydrogen explosion damaged the core. The core was repaired, and placed back into service about two years later. There were no fatalities or injuries, and a followup study in 1982 revealed no long term impact to exposed workers. ( Full Answer )
There were 2 major power plant meltdowns the first one occurred in Ukraine a power plant named Chernobyl this happened 26 years ago 1986 April 26th Saturday at 1:23:58am the reason of the explosion was a mislead by a Cheif Named Anatole Diatlov reactor 4 had a test on it to see how it co-ops with …low output power the chief ordered the amount of megawatts to be in 200mw but he didn't know that it would cause a catastrophic disaster if placed test on a power plant it should be to 700mw till 1000mw not only was the rule broken there was a warning that a bubble built in the reactor was present which was a heated area producing more and more heat.although dangerous but test was resumed as scheduled turbine 8 was shut down suddenly that caused more risk all turbines were shut down and the bubble begun producing more heat with less water soon steam started lifting the 350kg cover of were the heat comes out to blocks in within 3seconds one of the engineers had pressed the A3-5 button that was able to shut down the reactor fully but that cause more damage for the bubble in the reactor later in seconds the first explosion occured destroying 50 uranium fuel rods and leading for the second explosion to give more damage the fuel rods were melted and had the temperature of 12,000c this lead to flipping the 1000tonne roof of the reactor 4 to its side immediately radiation and dst started to escape the whole reactor 4 was damaged the day after the aftermath workers found another situation in the reactor that made it even worse to handle. after 26 years radiation is still present in the Chernobyl plant the whole 162km radius had to be evacuated from the area of Pripyat.notice the power plant is not shut down its still working and has doses of radiation the second is Japan in the coast of Honshu power plant named Fukushima Daiichi.On march 11th Friday 04:46:24pm GMT the result of the meltdown was caused by 2 natural disasters at first an earthquake of 9magnitude shook the power plant and as well as the city of Tokyo and Honshu some of the systems had failed to operate and lead to damage after the earthquake comes in 46-49ft Tsunami that hit and flooded the power plant to knee length later on the entire power plant was flooded with sea water that caused a decreased amount of cooling water seawater was present all the generators that produced cooling water were shut down and were only restarted 2-3 days after the meltdown the 3 safety systems had failed to cooperate that caused the rods to over-heat and self-melt,soon the TEPCO concludes that another meltdown was possible for the reactionary in 38 hours after days passed the reactor was still flooded with seawater and shutdown with heated rods that have melted the workers have caught an over-limit dose or radiation 2000-6000mSv of 400 is more then enough to kill a person. and have identified an amount of radiation in air, water,soil and food as a result of the damage in 300km radius has an amount of radiation all people that lived close to reactor have been evacuated. ( Full Answer )
An accident is defined as any property damage, injury or death resulting from the unintentional motion of a motor vehicle, its loads or occupants. That being said most accidents come down to causes that can be directly related to human error. The error does not have to be the driver. An engineer cou…ld make a design mistake that is put into production. A mechanic can forget to tighten something. The owner can neglect to do maintenance on it. The tough part comes from the driving that was being done in the case of an accident. There are many many factors that can be present. The unknown factor is the other driver in the event of a 2 car accident. ( Full Answer )
That would vary with reactor design, where the original problem occurred, operator training and response to the problem, and many other variables. An accident can vary from a tiny release of radioactive gasses that is stopped immediately, through steam ejection of a fuel rod whch impales a single wo…rker onto the ceiling, through a massive steam explosion followed by a graphite fire (all three of these have happened), to a worst case complete core meltdown that melts down to the water table causing massive contamination of drinking water for hundreds of miles (this has not happened). ( Full Answer )
Who is the Minister in Charge of the Response to the Economic Impact Caused by the Nuclear Accident for Japan?
Toshimitsu Motegi is the Minister in Charge of the Response to the Economic Impact Caused by the Nuclear Accident for Japan.