, or heat transfer fluid
, is a fluid which
flows through a device in order to prevent its overheating,
transferring the heat produced by the device to other devices that
utilize or dissipate it.
The use of Lead coolant avoids the
potential for fires and for water-coolant reactions associated with
sodium. These designs offer temperatures substantially above those
available from current water-cooled reactors, increasing
thermodynamic efficiency. They take advantage of this feature as
well as of passive safety features to reduce capital and operating
costs, and they have lower fuel-cycle costs than current
water-cooled reactors. They can operate as breeders or near-breeders
to increase resource utilization and can easy the management of
radioactive waste by consuming plutonium and transmuting minor
actinides into stable isotopes.
Lead Coolant are used where high temperature stability is
required, eg. some fast breeder nuclear reactors.