Fukushima Disaster and its introduction, Fukushima accident , causes and their impacts on people , social life , economy , nature and our environment and their solutions

1. FUKUSHIMA
DISASTER
Anik Chandel
(Department of Environmental
Science)

2. INTRODUCTION
• It is the second biggest nuclear disaster in the
world after CHERNOBYL disaster.
• It is assessed at level 7 – the maximum scale
value on the International Nuclear Event Scale
(INES)
• Earthquake followed by tsunami and nuclear
disaster arose with in 5 hours.

3. FUKUSHIMA DISASTER
Location : Fukushima ,
Japan
Date : 11th March, 2011
Type : Nuclear disaster
Causes : Tsunami
followed by earthquake

4. Fukushima accident
• Fukushima accident, also called Fukushima
nuclear accident or Fukushima Daiichi nuclear
accident, accident in 2011 at the Fukushima
Daiichi (“Number One”) plant in northern Japan,
the second worst nuclear accident in the history
of nuclear power generation. The facility,
operated by the Tokyo Electric and Power
Company (TEPCO), was made up of six boiling-
water reactors constructed between 1971 and
1979. At the time of the accident, only reactors
1–3 were operational, and reactor 4 served as
temporary storage for spent fuel rods.

5. Fukushima Daiichi
Nuclear Plant
• It is one of the 15th largest
nuclear power station in the
world.
• It was the first nuclear power
plant to be designed ,
constructed and run by the
general electric and Tokyo
Electric Power Company
(TEPCO)
• After the disaster on 11 march
, 2011 the plant is disable for
avoiding further radioactive
decay

6. INCIDENT
• The nuclear disaster took place with a series
of disaster.
• Over 15800 people died from the combined
effects of the events
• Over 20 km area around the nuclear plant was
evacuated by the government.
• It occurred due to equipment failure by
tremors causing core meltdown and relase of
radioactive material.

7. THE ACCIDENT
• Fukushima Daiichi Nuclear Disaster was on
energy accident , initiated primarily by the
tsunami and earthquakes on march 11, 2011

8. What happened ?
Friday march 11th @ 2.36 pm local
Magnitude 9.0 earthquake hits the pacific ,
231 miles northeast of Tokyo.
It is the 4th biggest earthquake in the world
since 1990.
Generated a 14m tsunami waves

9. AS A RESULT:
Earthquake
Earthquake caused automatic Shutdown of 3
operating units.
Offsite power lost
14m Tsunami ( less than 1hr later)
All emergency Back up power lost
8-10 hr later Station Batteries wear out

10. • Earthquake and tsunami disable the power
supply and cooling of three reactor , causing
nuclear accident.
• The accident was rated 7 on the INES scale ,
due to high radioactive release over a day

11. causes
Earthquake Tsunami
The earthquake was caused by
the rupture of a stretch of the
subduction zone associated
with the Japan Trench, which
separates the Eurasian Plate
from the subducting Pacific
Plate
A magnitude 9.0 earthquake
strikes off the coast at 2:46
p.m., triggering a towering
tsunami that reaches land
within half an hour. The
tsunami smashes into the
Fukushima Daiichi nuclear
plant, destroying its power and
cooling systems and triggering
meltdowns at three reactors.

12. Effects
• Impact on people:
1,70,000 people are
displaced
Higher risk of cancer.
Greatest impact on
psychological.
Due to release
radioactive
substances cancer
was spreading

13. • Impact on social life
Home which are located 30km around of
fukushima have been evacuated.

14. • Impact on economic
After the accident Japan losses 150 billion
Euro’s.

15. • Impact on nature
Radioactive particles were released into the
atmosphere and ocean – contaminated of
groundwater , soil , seawater.
After the accident the environment was totally
changed.

16. • Effect on environment
After the disaster , released substance
damaged the environment

17. Solutions
• Cores were installed with automated cooling
system within 3 months after the disaster
• Building was protected from storms and heavy
rainfall.
• New xenon gas ( common product of uranium
fission ) detector were installed
• Filter that reduce the amount of contaminants
escaping into area and atmosphere
• Cement that prevents contaminants from getting
accidentally into the pacific ocean

18. THANK YOU..!