Chernobyl disaster

Location : Pripyat town in Ukraine near Belarus

Time : 26/4/1986 1:23 Am (UTC+3)

Origine : Steam turbine tests

http://blog.chihchih.net/blog/post/38809445-%E9%87%8D%E5%9B%9E%E8%BB%8A%E8%AB%BE%E6%AF%94

Short - Term Effects

Unit of Radioactivity : Roentgen

Radioactivity in normal atmosphere : 0.000012 Roentgen

At noon : 0.2 Roentgen

At night : 7 Roentgen

Short - Term Effects

Affordable quantity in a year : 2 Roentgen

Fatal quantity in a year : 400 Roentgen

People within 30 km left their hometown.

Total: 336,000 people

https://www.youtube.com/watch?v=YzMms0KThE4

Short - Term Effects

Radioactivity was blown north by the wind.

Northern Europe was covered by radioactive cloud.

https://www.youtube.com/watch?v=YzMms0KThE4

Long - Term Effects

• More than 600,000 people cleared the blocked area.
• 10% of them dead shortly after

• 165000 people among them became handicapped

https://www.youtube.com/watch?v=YzMms0KThE4

Long - Term Effects

• Construction of large concrete sarcophagus 1986 ~ 1987.
• Worker in the nuclear power plant changed shifts per 1~2 hours.

https://www.youtube.com/watch?v=YzMms0KThE4

Long - Term Effects

http://www.setn.com/News.aspx?NewsID=114927

http://ppt.cc/GJ7j1

New sarcophagus had completed in 2015.

Old sarcophagus

New sarcophagus

Long - Term Effects

Radioactivity sank into soil. (1 cm per year)

There are 100 kg Plutonium inside the reactor.

Half life of Pu is 245000 years.

http://sciencenotes.org/printable-periodic-table-chart/

Nuclear Power vs. Thermal Power

Thermal Power:

    100 unit radioactive wast

    427 people dead from industry safety accident

Nuclear Power:

    1 unit radioactive wast

    8 people dead from industry safety accident

Risk of Nuclear Power

Worst case : Fourth Nuclear power plant

    ．Radioactive waste

    ．High economic risk

    ．High expectation of injury to people

http://www.uipex.com/monpub_show.aspx?ID=MP13032909422133