Prismatic fuel assembly recovering method for pressurized water nuclear reactor, involves discharging damaged assembly towards zone for being arranged in receiving device, and discharging securing tools after being separated from assembly

摘要

The method involves securing and maintaining a prismatic fuel assembly (7a) under water, after detecting the presence of the assembly during lifting of upper internal equipments (4) of a pressurized water nuclear reactor. The assembly is decoupled from an upper core plate (4a) in a remote manner. The equipments are transferred and installed on a receiving stand arranged in a water tank (16). A damaged fuel assembly is discharged towards a storage zone for being arranged in a receiving device (15). Securing tools (20) are discharged after being separated from the assembly.