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                                                Chernobyl

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                                                Chernobyl

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Janno Klais, Hayk Davtjan and Tarvi Kõiv
AT218
2020

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                                        Chernobyl Disaster

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                                        Chernobyl Disaster

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- The worst nuclear disaster in history

- 90 times more radioactive than Hiroshima

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                       The Chernobyl Nuclear Power Plant

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                       The Chernobyl Nuclear Power Plant

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- 11 miles north of the city of Chernobyl

- Plant consisted of 4 reactors

- Produced 10% of world’s electricity

- Construction began in the 1970’s

- At the time of the accident, reactors #5 and #6 were in progress

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                                       Where is Chernobyl?

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                                       Where is Chernobyl?

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- In Northern Ukraine

- 10 miles away from Belarus (16 km)

- 80 miles North of Kiev (128 km)

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                                  Chernobyl’s population

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                                  Chernobyl’s population

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- Chernobyl  had a population of 10,800 in 1898

- 500 people (2010)

- It's mostly a ghost town today, a small number of animals and people still live there

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                                                   Pripyat

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                                                   Pripyat

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- Second-largest city
- 2 miles away from Chernobyl (3 km)
- It had population of 49,400 before the disaster

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                                Enviromental problem #1

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                                Enviromental problem #1

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(Atmosphere's pollution)

PROBLEM:
Release of substantial amounts of radioactive contamination into air.

WHAT CAUSED?
The explosion of the #4 reactor and the core.

SOLUTION:
There is nothing, anyone could do.

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                                Enviromental problem #2

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                                Enviromental problem #2

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(Water pollution)

PROBLEM:
Radioactive materials deposited on rivers, lakes and some water reservoirs, both in areas close to the reactor site and in other parts of Europe.

WHAT CAUSED?
The explosion of the #4 reactor and the core.

SOLUTION:
Without credible information, emergency staff launched “worst case” scenario.

In 1990-2000s the focus of protective measures shifted from remediation to construction of protective systems for the complete isolation of contaminated areas along Pripyat River.

The process of degradation of radionuclides was let to itself under so called “observed natural attenuation”

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                                   Enviromental problem #3

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                                   Enviromental problem #3

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( Radioactive debris)

PROBLEM:
Pieces of Reactor #4 and the core exploded all over the area. The pieces were so radioactive that they could melt through metal and cement.

WHAT CAUSED?
The explosion of the #4 reactor and the core.

SOLUTION?
Men from the Soviet army  were sent to shovel up the ruins. Their workday was only 90 seconds, but they got paid 2500 $.  That kind of work had a huge impact on human health. If any of the men were there more than 90 seconds, they could get cancer or even die because of the high radioactivity levels.

VIDEO: ( 5;44 - 7;20)
https://www.youtube.com/watch?v=ti-WdTF2Qr8

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                                            Used materials

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                                            Used materials

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-  https://www.greenfacts.org/en/chernobyl/l-2/3-chernobyl-environment.htm#3

- https://en.wikipedia.org/wiki/Chernobyl_disaster

- https://en.wikipedia.org/wiki/Effects_of_the_Chernobyl_disaster

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                         Summary of Chernobyl's accident

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                         Summary of Chernobyl's accident

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https://www.youtube.com/watch?v=ldYeFLZqh3Q

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                             Thank you for your attention!

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                             Thank you for your attention!