fukushima nuclear disaster team 07: belsheim joshua francis travis he jiayang moehling anthony...
TRANSCRIPT
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1
Fukushima Nuclear Disaster
Team 07:
Belsheim Joshua
Francis Travis
He Jiayang
Moehling Anthony
Ziemkowski Micah
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Presentation Outline
• Introduction
• Events
• Reactions
• Design Flaws
• Suggestions
Jiayang 2
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How did the disaster happen?
• Earthquake
• Tsunami
• Equipment failure
• Nuclear meltdown
• Releases of radioactive
materialsFigure 1. Nuclear Plants in Japan
(From Wikipedia)
Jiayang 3
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Events
• Units 1, 2, and 3 exploded
• Units 4, 5, and 6 shut down
• Central fuel storage was
secured
• Contamination
Micah 4
Figure 2. Fukushima Nuclear Plant
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Contamination Zone
Micah 5
Figure 3. Contamination zone.
http://energy.gov/content/situation-japan
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Severity of Disaster
Anthony 6
• Declared Nuclear
Emergency
• 7 out 7 on the INES
(International Nuclear
Event Scale) Figure 4
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Reactions
Anthony 7
• Automatic Shut Down
• Evacuated 100,000 people
• Started cooling 2 weeks later
• Drop to a stable temperate 6 months later
• Cold shutdown 9 months later
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Design Flaws
• RPV: reactor pressure
vessel.
• DW: dry well enclosing
reactor pressure vessel.
• WW: wet well - torus-shaped
all around the base enclosing
steam suppression pool.
• SFP: spent fuel pool area.
• SCSW: secondary concrete
shield wall.
Travis 8
Figure 5:Reactor Cross section
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Suggestions on Prevention of Future Disasters
• Emergency generators for the plant should be placed in areas of little seismic activity and low risk of flooding.
• High quality design, material selection, and construction of the plant.
• Equipment which prevents operation disturbances and human error.
• Monitoring and testing to detect equipment failure.• Redundant safety measures and containment systems.• Ability to confine damage to individual systems, sections, and
reactors.
Joshua 9
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Suggestions For Containment
Joshua 10
• Lead sarcophagus around the reactors like Chernobyl.
• Ice wall around the affected area.
Figure 7:Lead Sarcophagus
Figure 6: Ice Wall
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Conclusion
• Reason
• Event
• Reaction
• Design
• Suggestion
Joshua 11
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References
Joshua 12
Figure 1 and Figure 2http://en.wikipedia.org/wiki/Fukushima_Daiichi_nuclear_disaster
Figure 3http://energy.gov/content/situation-japan
Figure 4http://www-ns.iaea.org/tech-areas/emergency/ines.asp
Figure 6http://blog.kievukraine.info/uploaded_images/4778-750384.jpg
Figure 7http://news.bbcimg.co.uk/media/images/69623000/gif/_69623952_fukushima_ice_wall_624.gif
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Resources
Joshua 13
http://www.world-nuclear.org/info/Safety-and-Security/Safety-of-Plants/Fukushima-Accident-2011/#.UjY6fj-Dl8E
http://www-ns.iaea.org/tech-areas/emergency/ines.asp
http://www.reuters.com/article/2011/04/12/japan-severity-idUSTKE00635720110412
http://www.iaea.org/newscenter/news/tsunamiupdate01.html
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Question?