Nuclear Power Plants. Topic: Environment Student: Natalia Torres ESL-5 Instructor: Lyra Riabov. Outline. Introduction Nuclear Power Plants (NPP) are alternative ways to produce electricity
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Nuclear Power Plants
Topic: Environment Student: Natalia Torres
ESL-5 Instructor: Lyra Riabov
Nuclear Power Plants (NPP) are alternative ways to produce electricity
Roots of nuclear Power and Principles of structure of the NPP
The Industrial Revolution.
First nuclear chain reaction (Enrico Fermi,1942).
First large scale nuclear reactors were built in 1944 (US, Hanford Washington).
Enriched uranium started to be available.
How does a NPP produce electricity?
Mining and purifying uranium.
Improperly functioning nuclear power plants.
Spent fuel from nuclear power plants is toxic and not safe.
Transporting nuclear fuel poses some risk.
Chernobyl Nuclear Disaster
The chain reaction in the reactor became out of control creating explosions and a fireball which blew off the reactor’s heavy steel and concrete lid.
Radioactive material released.
The immediate results consisted of 31 deaths.
Within 48 hours after the accident those living within 10 km of the Chernobyl station, including the town of Pripyat, were evacuated.
The effects have been felt all over the northern hemisphere.
Lethal doses: possibility of long term genetic effects (coniferous trees and small mammals).
The Three Island Nuclear Power Plant Accident
“Most of the radioactivity you are normally exposed to is from natural sources.”
Myths and facts about Nuclear Power Plants.
Current situation: 17% of global electricity is generated by some 440 nuclear power reactors in 32 countries.
36 units under construction in 14 countries.
Effects on the life globally and in the United States
Generalizations: Cell mutation and Fatal dose (600 R).
Acute Somatic Effects: Acute radio dermatitis.
Delayed Somatic effects: Cancer, leukemia, cataracts, life shortening from organ failure (not directly observed in man), and abortion.