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Chernobyl disaster

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Chernobyl disaster The worst man-made disaster in human history The nuclear power station The Chornobyl nuclear power station was built in 1978-1979. – PowerPoint PPT presentation

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Title: Chernobyl disaster


1
Chernobyl disaster
The worst man-made disaster in human history
2
The nuclear power station
3
Chernobyl is located on the border area between
Ukraine andBelarus.
4
Chernobyl
5
The Chornobyl nuclear power station was built in
1978-1979.
6
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8
The Explosion
9
In the early morning hours of 26 April 1986, a
testing error caused an explosion at the
Chernobyl nuclear power station.
10
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12
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13
Radioactive fallout
14
The explosion released 190 tons of radioactive
gases into the atmosphere.
15
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16
Radioactive fallout scattered over much of the
northern hemisphere via wind and storm patterns.
17
70 of the radioactive material was blown into
the neighboring country of Belarus.
18
In all 150,000 square kilometres in Belarus,
Russia and Ukraine were contaminated.
19
7 million people living in these areas were
exposed to the radiation fallout.
20
The evacuation
21
The morning after the explosion, there was no
hint of a disaster.
22
Children went to school and played outside.
23
Gardeners worked on their plots outdoors.
24
Even weddings took place that Saturday night.
25
Only on the second day after the disaster (after
36 hours) did the Soviet authorities start
evacuating people from the area around Chernobyl.
26
In total some 200,0000 people are believed to
have been relocated as a result of the accident.
27
3 million of those evacuated were children.
28
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29
The Human Casualties
30
The immediate impact
31
The immediate casualties were operators, rescue
workers, firefighters and soldiers involved in
the clean up operations.
32
31 emergency clean-up people workers died in 3
months of radiation poisoning.
33
134 emergency workers suffered from acute
radiation sickness.
34
25,000 of the rescue workers later died from
diseases caused by radiation.
35
  • Diseases caused by radiation included- lung
    cancer,
  • leukemia,
  • cardiovascular disease.

36
Long term exposure
37
Eight years after the  accident 8,000 people had
died from diseases due to radiation.
38
To date medical statistics reported 270,000
cancers (mostly thyroid) caused by the Chernobyl
disaster.
39
Of these 93,000 of these cancer cases were fatal.
40
There have been at least 1800 documented cases of
thyroid cancer in children.
41
  • In region of Belarus, incidence of
  • leukemia has increased 50 in
  • children and adults.

42
Maternal exposure to radiation caused an
increased rate of - birth defects, -
miscarriages, - and stillbirths
43
Environmental Impact
44
  • Areas still impacted today
  • - soil
  • - water
  • air
  • crops and food
  • livestock

45
  • 20 of prime farmland in Belarus
  • remains contaminated from the
  • decaying components of
  • plutonium.

46
  • Radiation is concentrated in
  • sediments at the bottoms of lakes
  • and ponds.

47
Still the population continues to contaminate
itself by fishing there.
48
Livestock such as cattle and goats accumulate
radioactivity in their meat and milk.
49
  • The food and water supply is
  • continuously contaminated by
  • rainfall and by the movement of
  • radioactive dust.

50
Problems Today
51
After the disaster, a huge cement box
(sarcophagus) was hastily built around the
radioactive material.
52
  • According to a 2003 report by the Russian Atomic
    Energy Ministry, "the concrete shell surrounding
    the Chernobyl nuclear reactor was in real danger
    of collapsing at any time."

53
  • A new shelter - a 1.3 million euro
  • project was completed in 2009.

54
It is hoped to safely contain the nuclear
material for the next 100 years.
55
  • 97 of the radioactive materials
  • from the Chernobyl plant still
  • remains inside this sarcophagus.

56
Even if the people are aware of the danger many
have returned to live in their old homes. 
57
Today 5.5 million people still live in
contaminated areas.
58
They continue to be exposed to low doses of
radiation for decades to come.
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