Nuclear Power Plant Accident

1. Nuclear Power Plant Accident Submitted by: Peregrino, Chrissia Joy Rosales, KrizziaHeizel Tarusan, AissaAllyanaMarielle III-Narra

2. Chernobyl Nuclear Power Plant • Is a decommissioned nuclear power station near the city of Pripyat, Ukraine, 18 km (11 mi) northwest of the city of Chernobyl,16 km (9.9 mi) from the Ukraine-Belarus border, and about 110 km (68 mi) north of Kiev. Reactor 4 was the site of the Chernobyl disaster in 1986. CHERNOBYL DISASTER • It was a nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine(officially Ukrainian SSR), which was under the direct jurisdiction of the central Moscow's authorities. • An explosion and fire released large quantities of radioactive contamination into the atmosphere, which spread over much of Western USSR and Europe.

3. It is considered the worst nuclear power plant accident in history, and is one of only two classified as a level 7 event on the International Nuclear Event Scale. • It is considered the worst nuclear power plant accident in history, and is one of only two classified as a level 7 event on the International Nuclear Event Scale. • Just after 1 a.m. on April 26th, the reactor's power dropped suddenly, causing a potentially dangerous situation. The operators tried to compensate for the low power but the reactor went out of control. If the safety systems had remained on, they would have fixed the problem; however, they were not. The reactor exploded at 1:23 a.m. **It is estimated that the radiation from the Chernobyl disaster was 100 times more powerful than the bombs dropped on Hiroshima and Nagasaki. Thirty-one people died shortly after the explosion, but thousands more will die from the long-term effects of radiation.**

4. The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel.  • The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the atmosphere and downwind.  • Two Chernobyl plant workers died on the night of the accident, and a further 28 people died within a few weeks as a result of acute radiation poisoning.  • UNSCEAR says that apart from increased thyroid cancers, "there is no evidence of a major public health impact attributable to radiation exposure 20 years after the accident." 

5. Fukushima Daiichi Nuclear Power Plant • Also known as Fukushima Dai-ichi (dai-ichi means "number one"), is a disabled nuclear power plant located on a 3.5-square-kilometre (860-acre) site in the towns of Okuma and Futaba in the Futaba District of Fukushima Prefecture, Japan. • First commissioned in 1971, the plant consists of six boiling water reactors (BWR). These light water reactors drove electrical generators with a combined power of 4.7 GWe, making Fukushima Daiichi one of the 15 largest nuclear power stations in the world. • Fukushima I was the first nuclear plant to be constructed and run entirely by the Tokyo Electric Power Company (TEPCO). • The plant suffered major damage from the 9.0 earthquake and subsequent tsunami that hit Japan on March 11, 2011 and is not expected to reopen. The earthquake and tsunami disabled the reactor cooling systems, leading to nuclear radiation leaks and triggering a 30 km evacuation zone surrounding the plant.

6. Fukushima Daiichi nuclear disaster  is a series of equipment failures, nuclear meltdowns, and releases of radioactive materials at the Fukushima I Nuclear Power Plant, following the Tōhoku earthquake and tsunami on 11 March 2011. • Fukushima Daiichi nuclear disaster  is a series of equipment failures, nuclear meltdowns, and releases of radioactive materials at the Fukushima I Nuclear Power Plant, following the Tōhoku earthquake and tsunami on 11 March 2011. • The Fukushima disaster is the largest of the 2011 Japanese nuclear accidents and is the largest nuclear accident since the 1986 Chernobyl disaster, but it is more complex as multiple reactors and spent fuel pools are involved.