“AN ENVIRONMENTAL
CATASTROPHE”
NUCLEAR AGE
NUCLEAR
ACCIDENTS AND
ITS EFFECTS
SHOWS ABOUT
THE NUCLEAR
AGE
IS there a
clean
FUTURE??
FIRST NUCLEAR
AGE(1938...
RADIATIONS:
RADIOACTIVITY
MARKED
BY
YELLOW
SIGN
• IT MUST BE
STORED IN
ABONDED
PLACES.
RADIOA
CTIVE
WASTE
• IT CONTINUE
TO...
TYPES OF RADIATIONS:
NATURE OF RADIATIONS:
Alpha (α) and Beta (β) radiation, consisting of electrons,. Gamma (γ)
radiation, consisting of energ...
MAJOR PART OF NUCLEAR:
Major part of
nuclear
contains
uranium and
radon:
Radon-222 is a
gas produced by
the decay of
radiu...
SOME BASIC WAYS TO LIMIT EXPLOSURE:
• : Radiation intensity decreases sharply with distance, according
to an inverse-squar...
 First nuclear age : (1945-67)
 one of the major incidents during world
 war-II(1945)
 Atomic bombings of hiroshima an...
 the bomb was set to explode together with chemical reactions
 uranium triggers the action, where it strikes on nuclear ...
 on 6th august,1945 during the day time a B-29 heavy bomber flying at high altitude dropped the
first atomic bomb on Hiro...
NUCLEAR CHAIN REACTION:
Uranium bullet
triggers the action
Uranium bullet
reaches the
uranium tank
Together with the
nucle...
DAMAGES AND INJURIES:
 nearly 60 to 80,000 peoples where killed in nagasaki.
 the extended radiation caused innumerable ...
SECOND NUCLEAR AGE: (1968-92)
 second nuclear age plays a big role in nuclear power plant accidents.one of the most popul...
 Chernobyl power plant is located in
Ukraine.
 The disaster began during a systems
test on Saturday, 26 April 1986 at re...
The accident:
 The chain reaction went out of
control.
 There was A sudden
unexpected power surge
 When emergency shut ...
 According to observers outside Unit 4, burning lumps of material and sparks shot into
the air above the reactor. Some of...
 Four hundred times more radioactive material
was released than had been by the atomic bombing
of Hiroshima. The disaster...
 This was due to residual radioactivity from Chernobyl in the plants they graze on in
the wild during the summer. The aft...
 An area extending 19 miles (31 km) in all directions from the plant is known as the
"zone of alienation." It is largely ...
THIRD NUCLEAR AGE:1992- 1
 Fukushima disaster on japan

 A Massive disaster caused by the
 ear earth quake.
 Eleven reactors at four sites near Japan‟s north east coast where shutdown per seismic
energy procedures
 Five reactors...
THIS ACCIDENT SPOILS
THE SURROUNDING
PEOPLE LIVING IN
SURROUNDINGS
SUFFERED FOT FOOD
AND SHELTER
AS PER THE SEISMIC
PROCED...
IS THERE A CLEAN FUTURE??
 Though the nuclear power plants are essential one, it is a boon to our society. Our
govrnment ...
RESPECT THE NATION!!
RESPECT THE PEOPLE!!!
thank
you for considering my presentation
a presentation by
thangaraj.m
harikrishnan.v
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Environmental catastrophe

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a complete description about nuclear disaster.

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Environmental catastrophe

  1. 1. “AN ENVIRONMENTAL CATASTROPHE”
  2. 2. NUCLEAR AGE NUCLEAR ACCIDENTS AND ITS EFFECTS SHOWS ABOUT THE NUCLEAR AGE IS there a clean FUTURE?? FIRST NUCLEAR AGE(1938-67): HEARTLESS ACTIONS ON JAPAN SECOND NUCLEAR AGE(1967-92): CHERNOBYL DISASTER THIRD NUCLEAR AGE(1992-2011): Fukushima disaster
  3. 3. RADIATIONS: RADIOACTIVITY MARKED BY YELLOW SIGN • IT MUST BE STORED IN ABONDED PLACES. RADIOA CTIVE WASTE • IT CONTINUE TO EMIT RADIATION FOR SEVERAL HUNDRED YEARS
  4. 4. TYPES OF RADIATIONS:
  5. 5. NATURE OF RADIATIONS: Alpha (α) and Beta (β) radiation, consisting of electrons,. Gamma (γ) radiation, consisting of energetic photons, is eventually absorbed as it penetrates a dense material. Neutron (n) radiation consists of free neutrons that are blocked using light elements, like hydrogen, which slow and/or capture them. cosmic rays that consist of energetic charged nuclei like protons, helium nuclei, and high-charged nuclei called HZE ions.
  6. 6. MAJOR PART OF NUCLEAR: Major part of nuclear contains uranium and radon: Radon-222 is a gas produced by the decay of radium-226. Both are a part of the natural uranium decay chain. Among non- smokers, radon is the number one cause of lung cancer and, overall, the second leading cause.
  7. 7. SOME BASIC WAYS TO LIMIT EXPLOSURE: • : Radiation intensity decreases sharply with distance, according to an inverse-square law (in an absolute vacuum).[Distance • people who are exposed to radiation in addition to natural background radiation, limiting or minimizing the exposure time will reduce the dose from the radiation source. Time • Air or skin can be sufficient to substantially attenuate low-energy alpha and beta radiation. • Some radioactive materials are stored or handled underwater or by remote control in rooms constructed of thick concrete or lined with lead. Shielding
  8. 8.  First nuclear age : (1945-67)  one of the major incidents during world  war-II(1945)  Atomic bombings of hiroshima and nagasaki:  a result of the war between two big powers of the world,turns the whole world  though the war came to an end in europe, japan countinued the war without surrendering  so the president truman of america, premier atlee of england where decided to drop a bomb  the crew used pilotless planes and rockets that could not be seen or heared  the bomb used here is b-29 HISTORY ABOUT NUCLEAR AGE
  9. 9.  the bomb was set to explode together with chemical reactions  uranium triggers the action, where it strikes on nuclear to start sustainable nuclear chain reaction Mr.colonel tibbet,  the states man, who Decide to bomb Through “enola gay”  the bomb made to fall from 31,000 feet and it was set to explode after falling 43 seconds it done with the help of seven boeing helicopters
  10. 10.  on 6th august,1945 during the day time a B-29 heavy bomber flying at high altitude dropped the first atomic bomb on Hiroshima.  more than 4 square miles gets devasted  nearly 90,000 to 1,66,000 peoples where killed by this cruel incident  on 9th august,1945 an another B-29 dropped in the industrial section of the city Nagasaki.  it affects the entire nation  on 10th august, japanese govt. requested,that it be permitted to Surrender under the terms of, Potsdam declaration of july26th.
  11. 11. NUCLEAR CHAIN REACTION: Uranium bullet triggers the action Uranium bullet reaches the uranium tank Together with the nuclei starts the nuclear chain reaction Releases enormous heat and continuos of energy
  12. 12. DAMAGES AND INJURIES:  nearly 60 to 80,000 peoples where killed in nagasaki.  the extended radiation caused innumerable deaths and serious physical,emotional and genetic problems which where faced by many generations.  15-20% where died due to sickness,and 20-30%of to flashburns,50-60% of to other injuries.  a study states that from 1950 – 2000, 46% of leukemia deaths and 11% of solid cancer deaths among the bomb survivors “as a human being, I would not felt happy about it. if I where mr.Truman I would not have dropped the bomb” -mr.colonel tibbbets Japanese face the situation with courage and made japan one of the leading countries of the world.
  13. 13. SECOND NUCLEAR AGE: (1968-92)  second nuclear age plays a big role in nuclear power plant accidents.one of the most popular nuclear power plant accident is, „Chernobyl disaster‟. Chernobyl disaster on 1986:  Chernobyl disaster was catastrophic Nuclear accident occurred on april26,1986 At Chernobyl power plant,Ukraine.  the thing which led to accident is, the chain reaction went out of control.
  14. 14.  Chernobyl power plant is located in Ukraine.  The disaster began during a systems test on Saturday, 26 April 1986 at reactor number four of the Chernobyl plant, which is near the city of and in pripyat proximity to the administrative border with Belarus and the dnieper river.  Russia, Ukraine, and Belarus have been burdened with the continuing and substantial decontamination and health care costs of the Chernobyl accident.  The Union of Concerned scientists estimates that, among the hundreds of millions of people living in broader geographical areas, there will be 50,000 excess cancer cases resulting in 25,000 excess cancer deaths
  15. 15. The accident:  The chain reaction went out of control.  There was A sudden unexpected power surge  When emergency shut down attempted,a large power output is occurred,which lead to the reactor vessel and steam explosions  This exposed graphite moderator,causes it to ignite. Power surge • A sudden power surge • When the chain reaction is attempted, large power output is occured Graphit e moder ator • the output causes a series of explosions. this led the graphite moderator to ignite
  16. 16.  According to observers outside Unit 4, burning lumps of material and sparks shot into the air above the reactor. Some of them fell on to the roof of the machine hall and started a fire.  About 25 percent of the red-hot graphite blocks and overheated material from the fuel channels was ejected. ...Parts of the graphite blocks and fuel channels were out of the reactor buildings.  As a result of the damage to the building an airflow through the core was established by the high temperature of the core. The air ignited the hot graphite and started a graphite fire.  the image shows the ejected Graphite From the power plant
  17. 17.  Four hundred times more radioactive material was released than had been by the atomic bombing of Hiroshima. The disaster released 1/100 to 1/1000 of the total amount of radioactivity released by nuclear weapons testing.  Approximately 100,000 km² of land was significantly contaminated nearly 350 animals were born with gross deformities such as missing or extra limbs, missing eyes, heads or ribs, or deformed skulls; in comparison, only three abnormal births had been registered in the five years prior.
  18. 18.  This was due to residual radioactivity from Chernobyl in the plants they graze on in the wild during the summer. The after-effects of Chernobyl were expected to be seen for a further 100 years, although the severity of the effects would decline over that period.  after the accident, four square kilometers gets totally contaminated  the image shows that a pine forest directly downwind of the reactor, turns wine reddish brown and died. According to the Union of Concerned Scientists the number of excess cancer deaths worldwide (including all contaminated areas) is approximately 27,000.
  19. 19.  An area extending 19 miles (31 km) in all directions from the plant is known as the "zone of alienation." It is largely uninhabited, except for a few residents who have refused to leave. The area has largely reverted to forest.  the image shows about the zone of alietnaion
  20. 20. THIRD NUCLEAR AGE:1992- 1  Fukushima disaster on japan   A Massive disaster caused by the  ear earth quake.
  21. 21.  Eleven reactors at four sites near Japan‟s north east coast where shutdown per seismic energy procedures  Five reactors at Fukushima declared emergencies due to loss of emergency backup power.  this accident causes the nuclear contamination, in the surrounding environment  Sreening is being done and people are subjected to proper medical care  Initially only three workers where affected by this radiation  Japan handled the situation in more effective and amazing way
  22. 22. THIS ACCIDENT SPOILS THE SURROUNDING PEOPLE LIVING IN SURROUNDINGS SUFFERED FOT FOOD AND SHELTER AS PER THE SEISMIC PROCEDURE FOOD GROWN IN THAT AREA IS BANNED FOR SALE
  23. 23. IS THERE A CLEAN FUTURE??  Though the nuclear power plants are essential one, it is a boon to our society. Our govrnment have to take much risk on this matter.  although power plants are clean it may cause harm to our precious environment.  we should use and manage our the natural resources wisely. “production of energy witout polluting will be much thank full for the people arround power plants”
  24. 24. RESPECT THE NATION!! RESPECT THE PEOPLE!!!
  25. 25. thank you for considering my presentation
  26. 26. a presentation by thangaraj.m harikrishnan.v
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