Deactivation in reactor pool

After passing through the reactor several times until its potential is exhausted, the fuel is put into interim storage in a pool of borated water in the fuel building of the reactor for a year and a half to five years.
The water allows the absorption of radiation and the evacuation of heat, and the boron prevents the chain reaction from restarting. This period allows the radioactivity and the thermal power of the fuel to decrease, to allow for its dry transport for processing and recycling.