Nuclear Power Energy Atomic Disaster

Nuclear Power Radiation Disaster

Danger of radioactive substances

The danger classification sign of radioactive materials

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Nuclear Fallout

is the residual radiation hazard from a nuclear explosion, so called because it "falls out" of the atmosphere after the explosion. It commonly refers to the radioactive dust created when a nuclear weapon explodes. This radioactive dust, consisting of hot particles, is a kind of radioactive contamination. It can lead to contamination of ground and animal food chain.

Different types of decay of a radionuclide. Vertical: atomic number Z, Horizontal: neutron number N The dangers of radioactivity and radiation were not immediately recognized. Acute effects of radiation were first observed in the use of X-rays when electrical engineer and physicist Nikola Tesla intentionally subjected his fingers to X-rays in 1896. He published his observations concerning the burns that developed, though he attributed them to ozone rather than to X-rays. His injuries healed later.

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The genetic effects of radiation, including the effects on cancer risk, were recognized much later. In 1927, Hermann Joseph Muller published research showing genetic effects, and in 1946 was awarded the Nobel prize for his findings.

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Nuclear Alpha Particles

may be completely stopped by a sheet of paper, beta particles by aluminum shielding. Gamma rays can only be reduced by much more substantial barriers, such as a very thick layer of lead.

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Ex-METI Minister Kaieda admits he distrusted Tepco at start of nuclear crisis

Former industry minister Banri Kaieda admitted Thursday there were moments during the early days in March 2011 of the Fukushima No. 1 nuclear plant disaster when he suspected Tokyo Electric Power Co. was trying to downplay the triple-meltdown crisis. Testifying before a Diet-appointed panel investigating the nuclear disaster, Kaieda said he thought Tepco may be trying to make the crisis appear ...

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AP: 1st overhaul to rules since 9/11 - and Japan crisis - mandates fewer drills for major emergencies at U.S. nuclear plants

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Africa’s Sahel: a disaster in slow-motion

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Fujisawa: How has the Fukushima nuclear disaster changed your life?

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Reeling from the Fukushima Daiichi nuclear disaster, Tokyo Electric Power Co. (TEPCO) has effectively been nationalized after Tokyo approved a request for a 1 trillion yen ($12.5 billion) injection of capital.

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In an in-depth interview with the President of Ploughshares Fund and one of nation?s top nuclear experts Joe Cirincione, we discussed the true threat of nuclear disaster and its relationship to other global challenges, a new international policy and consensus on nuclear weapons, a ranking of global nuclear threats, whether diplomacy is a dying art, the role of multilateral institutions, and much ...

Japan shuts down last nuclear reactor - CNN

Over the weekend, Japan's last nuclear reactor was shut down for regular maintenance. In the wake of the Fukushima nuclear disaster, reactors haven't been allowed back on. Japan is now the first major economy to see the modern era without nuclear power.

Summary Box: The downside of nuclear-free Japan

JAPAN'S CRISIS: The nuclear disaster at the Fukushima plant is eroding years of Japanese efforts to reduce greenhouse gas emissions blamed for global warming, as power plants running on oil and natural ...

Japan Nuclear Disaster: Crisis-Hit Country Mulls Shift To Renewable Energy

TOKYO -- Another long, stupefyingly hot summer is looming for Japan just as it shuts down its last operating nuclear power reactor, worsening a squeeze on electricity and adding urgency to calls for a green energy revolution.

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