1000
HREE SHIELDS TO PREVENT THE LEAKAGE OF RADIOACTIVE MATERIALS
When nuclear fuel is
produces enormous
undergoing a fission reaction
large energy and also produces a
it
amount of
radioactive fission
products. For this reason there are
three
shields
at
the nuclear
station, power
to
prevent
these
radioactive
products from escaping, to ensure that there is
environmental pollution or harm to people.
1.
2.
3.
Fuel can
Pressure vessel
Containment building
The first shield Fuel cans
-
The fuel pellets are placed in zirconium alloy
The pipes are sealed to form
cladding
tubes.
fuel
rods. These zirconium alloy tubes are generally
referred to as fuel cans. These are able to seal off
the
radioactive
nuclear fuel.
products
of the fission of
the
17
no
t
Fuel Can