PBW Replacement Operations Replacement of a PBW module

PBW Replacement Operations • Replacement of a PBW module involves the following basic operations: – Removal of five shield blocks (45 tons of shielding) – Drying (water removal) of PBW module – Cutting and removal of activated utility piping – Withdrawel of PBW module from cavity – Installation of new PBW module PBW Top Block Monolith/Core Vessel PBW Shield Block 6 (brown) PBW Shield Block 5 PBW Shield Block 4 PBW Shield Block 3 PBW Module RTBT Flight Tube – Connection of utility piping – Leak testing of inflatable seals and piping connections – Re-installation of shielding 散裂中子源进展汇报 18 December 2021 Page

PBW Replacement Operations Shield Block 4 Handling Container Shielded Containers Staged for Replacement Operations PBW Handling Container PBW Piping Handling Container Shield Block 3 Handling Container 散裂中子源进展汇报 18 December 2021 Page

Radiological Survey Information • Radiological surveys were done during every aspect of PBW removal operations. The following are some of the findings: 散裂中子源进展汇报 18 December 2021 Page

谢 谢！ 散裂中子源进展汇报 18 December 2021 Page 23