NUCLEAR REACTOR ASSEMBLY HAVING NUCLEAR FUEL AND A SYSTEM FOR TRIGGERING AND INSERTING AT LEAST ONE NEUTRONIC ABSORBING ELEMENT AND / OR MITIGATOR

摘要

Carrier assembly for a nuclear reactor comprising a housing (40), a fissile zone situated at the bottom of the housing (40), a free space situated at the top of the housing (40), a free space (52) in the fissile zone s' extending over the height of the fissile zone from its upper side end along the longitudinal axis, a sheath (54) bordering the free space (52), and a trigger and release system; insertion (SI), said trigger and insertion system comprising a capsule (10) of longitudinal axis, an absorbent assembly (2) and / or mixer suspended in the capsule and a triggering and insertion device (DI) able to release said absorbent assembly in case of accidental state of the assembly, said capsule (10) being inserted into the sleeve (54) said triggering and insertion system being removably mounted in the carrier assembly.