1176.
s its reactor.
energy,
During operation the reactor
gives off nuclear
mainly
in the form of thermal energy.
This is
carried
away
by
the
to coolant in the primary loop and used
generate
steam. For this reason the whole of the primary loop is known as
the nuclear steam supply system. It is also called the nuclear
island. It is the equivalent of the conventional boiler system of
the conventional thermal power stations,
technology is much more complicated.
but the process
For the sake of safety, the
whole of the primary loop is installed in a hermetically
structure known as the
sealed
containment building. In this way,
environmental safety will not be affected either by normal
operation or by an accident. The secondary loop, using steam
turbines to generate electricity, is basically similar to the
turbine generator system at a conventional thermal power station,
and this is known as the conventional island.
If we look at the most widespread pressurized water nuclear
power station, the nuclear steam supply system (the primary loop)
consists mainly of the reactor, the steam generator,
the main
generating
and the coolant pipes. The steam turbine
system (the secondary loop) consists
pump, the pressurizer,
electricity
mainly of the steam turbine generators, the water condensation
system and the water supply system. In a pressurized water
nuclear power station, the primary loop is completely separated
from the secondary loop. It is a sealed circulation system. The
basic flow process is as follows: the main pump conveys the
pressurized coolant to the reactor which carries away the thermal
energy produced by the nuclear fuel. After leaving the reactor,
10