Final module installed for Vogtle Unit 3

01 June 2020

The final module for Georgia Power's Vogtle Unit 3, a massive water tank, has been placed atop the containment vessel and shield building roof at the company's Vogtle 3 & 4 nuclear expansion project near Waynesboro, Georgia. The installation represents the final module placement for Unit 3, marking another significant milestone for the project.

The large module, known as CB-20, is a major part of the AP1000 reactor's advanced passive safety system.

The AP1000 plant's passive safety systems require no operator actions to mitigate potential emergency situations. These systems use only natural forces such as gravity, natural circulation, and compressed gas to achieve their safety function.

The modules used for Vogtle units 3 & 4 help streamline the construction process, since they were made in advance of arriving to the project site and ready to be assembled into larger components that make up the nuclear units. The final major module arrived at the construction site in late 2019, meaning all 1,485 major modules required to complete construction had been manufactured and safely delivered.