Economic advantages

Pursuing simplicity is also pursuing a reactor configuration rid of complex devices or even of entire systems, made no more needed by the inherent properties of lead.

As an example, the first huge simplification, hence cost saving, of a Lead Fast Reactor owes to the chemical inertness with water. The steam generators – the exchangers where inlet water is converted in steam to drive the turbine for electricity generation – can be placed right in the same containment as the core (the heat source), without the need for the intermediate circuit typical of Fast Reactors cooled by sodium (being sodium explosive with water, should a failure occur to the steam generator, the intermediate circuit permits any chemical explosion to happen far from the core).

Also, all other exchangers foreseen for the alternative evacuation of heat in emergency can be put in the same containment, in a so called “integral configuration” not requiring any primary piping.