chernobyl nuclear power plant accident april 1986
TRANSCRIPT
Chernobyl Nuclear Power Plant Accident
April 1986
https://publicintelligence.net/wp-content/uploads/2011/03/chernobyl.jpg
By the time the Soviet Union fell apart in 1991, they had 17 nuclear power plants, with more being built. These plants
provided 12.7% of all the electricity used in the Soviet Union.
Why did they build so many? And why did they build most of them close to large populations?
Map source: http://chnm.gmu.edu/1989/files/display/390/fullsize Power plant sites source: "Nuclear Power Plants." The Radiation Legacy of the Soviet Nuclear Complex: An Analytical Overview. Ed. Egorov Nikolaĭ. 1st ed. Routledge, 2000. 52-53.
The Soviets had lots of coal, but most was
east of the Ural
Mountains, far from
Adapted from a map at https://www.marxists.org/glossary/media/places/u/ussr/1982/coal-minerals.jpg
most workers AND far from most energy customers. Sending coal
back east was expensive. http://www.clker.com/cliparts/l/R/d/8/S/x/coal-md.png
The Soviets also had lots
of petroleum, and natural
gas. But most of that was also east of
the Urals. And
Adapted from a map at https://www.marxists.org/glossary/media/places/u/ussr/1982/coal-minerals.jpg
much of it was also very far north - in taiga and tundra – so oil/gas wells would be very
expensive to drill and to maintain there. http://www.fe.doe.gov/images/education/oilwell.gif
So here’s their problem: They have LOTS of energy resources, but getting to them
– and then sending them to the population centers – was HARD and
EXPENSIVE!
http://upload.wikimedia.org/wikipedia/commons/d/d1/Chuo_Main_Line_Freight_Yatsugatake.jpghttp://i.telegraph.co.uk/multimedia/archive/01857/tundra0_1857856b.jpg
In the 1950s, the Soviets began building nuclear power plants. They used graphite
cooling system instead of the water cooling system used in the the U.S. and other
countries. This was cheaper for the Soviets, but also less safe.
The day before the Chernobyl nuclear disaster, plant operators were getting ready to shut down
reactor number 4. The plan was to do routine work on the reactor, then start it up again.
http://thevelvetrocket.files.wordpress.com/2011/01/chernobyl-before-the-disaster.jpg
Chernobyl NPP, before the accident
http://3.bp.blogspot.com/--964lQ2TWXY/UIWxlXnN0XI/AAAAAAAAA4s/qKQDv9mVTLo/s400/Chernobyl.jpg
The senior operator was supposed to be on duty, but had left. Less experienced
workers were left in charge.
They broke safety
rules when they also
shut down the
automaticsafety
system -
http://3.bp.blogspot.com
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- the system that was
supposed to protect
everyone from a nuclear accident.
http://mrwgifs.com/spongebob-is-terrified-under-his-bed-covers/
At 1:23 a.m. on April 26, two explosions went off seconds apart in reactor number 4. This blew the roof
off the reactor building, sending burning material through the air and starting several fires.
Chernobyl NPP Reactor 4 explosion, computer generated imagehttp://i1.ytimg.com/vi/zLa84BN4REs/maxresdefault.jpg
The firefighters who arrived first had no idea the fire was from the reactor core.
They didn’t know their bodies were taking on high levels of radiation.
http://i.telegraph.co.uk/multimedia/archive/01371/monument_1371629i.jpg
Twenty-eight emergency workers died within a month of the explosion from severe
radiation poisoning.
http://totallycoolpix.com/2011/04/chernobyl-25-years-later-then-and-now/
Chernobyl NPP, three days after the accident
http://imgarcade.com/1/chernobyl-before-explosion/
The Soviet Union did not admit to the world what had happened.
Scientists in Sweden figured it out 2 days
later when Chernobyl’s radiation
set off alarms 620 miles away in a Swedish nuclear
power plant.
http://one-europe.info/user/files/Briefs/chernobyl_001.png
Today, about 1000 square miles around Chernobyl is mostly off-limits to people.
http://1.bp.blogspot.com/-b3ylb7WqRA0/Te8TSnDcxjI/AAAAAAAAHzg/OHo08FcEh4Y/s1600/chernobyl-exclusion-zone-map.jpg
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A few elderly people were allowed to return there. Scientists and government workers also go in to monitor and to do research.
http://www.un.org/News/dh/photos/large/2015/March/03-19-2015Ukraine_Aid.jpg
But for the most part, the zone is full ofhtt
p://images.nationalgeographic.com
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and overgrown streets.
abandoned houses, empty buildings,
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http://i.dailymail.co.uk/i/pix/2012/07/23/article-2177704-142ED1B1000005DC-533_964x628.jpg
Vehicles used in the cleanup were contaminated and left behind in the Exclusion Zone.
There are at least three “vehicle
graveyards” in the Exclusion Zone.
http://www.panoramio.com/photo_explorer#view=photo&position=7&with_photo_id=14282922&order=date_desc&user=944583
http://tylyenglish7.wikispaces.com/The+Chernobyl+disaster
abandoned control room of reactor #4
http://www.lovethesepics.com/2013/03/chernobyl-exclusion-zone-adrenaline-radiation-urbex-a-good-day-to-die-hard /
Because there is concern that the concrete cover on reactor #4 is leaking, a larger seal,
expected to last 100 years, is being built.
http://antinuclearinfo.files.wordpress.com/2013/11/diagram-chernobyl-sarcophag.gif
drawing of what it will look like when
finished
Since the danger from Chernobyl can affect many the world, many countries are helping pay
for and build it.
http://rt.com/files/news/chernobyl-new-safe-confinement-773/first-section-structure-exploded.jpg
When finished, it will be slid over reactor #4 on rails. Then it will be secured into position.
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQHdL_NyDlYcpjHh7RXpdv7JJ5mnRoKY5RADoidFLIaHkqwIkeOLQ
http://www.livescience.com/13858-chernobyl-nuclear-disaster-25-years.html
Chernobyl is a good example of how one country’s nuclear disaster can impact people in many countries.