School project on energy resources for the bilingual section of the class of Technology.

1. JOSE ÁNGEL MIRÓN SAMPEDRO
ELÍAS ROMERO TUBÍO
3ºE.S.O-A

2. INDEX
1. Definition of energy and type of diagram.
2. Plant operation.
3. Advantages and disvantages of a nuclear power
plant.
4. Plants that are in Galicia.
5. Plants that are in Spain.
6. Plants that are in Europe.
7. Plants that are in the world.
8. Accidents that were with these plants.
9. Conclusions.
10. Biography.

3. 1. DEFINITION OF ENERGY AND TYPE
OF DIAGRAM
A central nuclear plant
is an industrial facility
used for the generation
of electrical energy
from nuclear power.
These reactions occur in the
nucleus of some isotopes in
chemical elements
(radioisotopes).

4. 2. Plant operation
A nuclear power plant has a reactor, where the fission
of radioactive elements takes place.
It breaks elements and atoms apart and turns them
into other elements (uranyum etc...)
Fission releases a large amount of heat energy. The
steam moves the turbines like in dams. The
movement of these turbines cause electric currents
which are carried to substations and then to people’s
homes.

5. Most important parts of a nuclear plant
 Nuclear plants consist mainly of four parts:
1. The nuclear reactor, where the nuclear reaction
occurs.
2. The steam generator (only in PWR plants).
3. The turbine, which moves an electric generator to
produce electricity from steam expansion.
4. The condensed heat exchanger that cools the
steam, transforming it back into liquid.

6. NUCLEAR REACTOR
A nuclear reactor is a device
which initiates and controls a
sustained nuclear chain
reaction. Nuclear reactors are
used at nuclear power plants
for generating electricity. A
nuclear power plant can have
several reactors.

7. STEAM GENERATOR
A steam generator is a
machine where
chemical energy is
transformed into heat
energy. Generators
differ from steam
boilers in the fact that
they are much larger
and more
complicated.

8. STEAM TURBINE
A steam turbine is a device that
extracts thermal energy from
pressurized steam and uses it to
do mechanical work on a rotating
output shaft. Its modern manifestation
was invented by Sir Charles
Parsons in 1884.

9. CONDENSED HEAT
A cooling system removes heat from the reactor core
and transports it to another area of the plant.

10. 3. ADVANTAGES AND
DISADVANTAGES OF A NUCLEAR
POWER PLANT
 ADVANTAGES
- Quiet and small in relation to other plants./ - There is enough
uranium and fissile material yet. /- Does not pollute the atmosphere
and causes no pollution with a good use, with the exception of nuclear
waste. - Very safe .
DISADVANTAGES
-In a possible-and improbable-failure, nuclear plants are highly
dangerous. /The plants are very radioactive for the environment./-
Uranium is a finite resource.-The disposal of spent fuel is a problem,
because it can be used to make nuclear weapons. /The decay of some
nuclear products takes thousands of years.

11. 4. PLANTS THAT ARE IN GALICIA
In Galicia, the political representatives have declared
the region a nuclear-free zone, that is, no plants or
nuclear waste can be located in Galicia.

12. 5. PLANTS THAT ARE IN SPAIN
In Spain there are six nuclear power
plants locations, two of which,
Almaraz and Ascó, have twin units,
so the number of reactors is eight
(2010).
The nuclear plant Jose Cabrera
(Zorita) located 70 km from Madrid
was closed down on April 30, 2006 as
it was the oldest in Spain .

13. 6. PLANTS THAT ARE IN EUROPE
Slovenia, Lithuania, the
Netherlands and Romania have one,
Bulgaria has two, Finland and
Hungary have four, Slovakia and
Switzerland have five, the Czech
Republic has six; Belgium seven,
Spain eight, Sweden ten, Ukraine
fifteen, Germany seventeen, the UK
nineteen, and the highest
concentration is in France, with 59
nuclear power plants.

14. 7. PLANTS ALL OVER THE WORLD

15. 8. ACCIDENTS THAT TOOK PLACE IN
THESE PLANTS
By nuclear accidents, we refer to those situations in
which a considerable level of radiation is produced.
To determine the severity of an accident, we use the
International Nuclear Event Scale .

16. ACCIDENT AT THE THREE-MILE
ISLAND NUCLEAR PLANT
In March 1979, the nuclear plant at
Three Mile Island had a serious
nuclear accident after the first year
of operation. The accident was
classified as level 5 on the
International Nuclear Event Scale
(INES)

17. CHERNOBYL NUCLEAR ACCIDENT
In April 1986, the largest nuclear
accident in history occurred at
Chernobyl nuclear power plant
due to a series of human errors. It
was classified as a level 7 ("serious
nuclear accident") on the INES
scale.

18. NUCLEAR ACCIDENT 1 VANDELLÓS
In October 1989, the incident at the nuclear
power plant of Vandellós took place. It was
classified as level 3 ("major incident") on the
INES scale.

19. Tokaimura NUCLEAR ACCIDENT
In September 1999, the
accident at the nuclear fuel
processing plant of
Tokaimura took place. All
signs indicated that it was
due to a human error. The
incident was classified as
level 4 on the INES Scale.

20. FUKUSHIMA NUCLEAR ACCIDENT
The nuclear accident at
Fukushima’s nuclear plant
happened on March 11, 2011.
There were a series of
incidents, such as explosions in
the buildings which contained
the nuclear reactors, some
faulty cooling systems, a triple
fusion core and an outer
radiation release.

21. 9. CONCLUSIONS
 There are a lot of nuclear power plants. One 0f the
places that has more nuclear power plants is France,
with 59.
 There are nuclear power plants that are
environmentally-friendly and produce the same
amount of energy.
 However, none of them produce much electricity.

22. 10. BIOGRAPHY
WIKIPEDIA CENTRALES NUCLEARES
BOOKS OF NUCLEAR POWER PLANTS