Georgia Power Co. announced a pair of milestones Monday morning as the expansion of Burke County’s Plant Vogtle continues to take shape. The last module for the project – a 360-ton water tank placed atop the Unit 4 containment vessel – has been lowered into place by a crane, Jeffrey Wilson told The Augusta Chronicle on Monday. Wilson is Georgia Power's nuclear development and crisis communication manager. Also, hot functional testing has begun, “which is a big test for Unit 3,” Wilson said. Hot functional testing is expected to verify that the reactor's components and systems work together correctly, confirming the reactor is ready for its uranium fuel load.