Bruce Power rebuilds Unit 4 reactor core 25 days ahead of schedule

Engineers at Ontario's Bruce Power nuclear station completed a key stage of rebuilding the Unit 4 reactor core, fitting all 480 calandria tubes 25 days faster than the previous unit. A six-axis robotic system sealed the joints without manual work in radiation zones. Siemens Energy Canada will supply new steam turbines for all four Bruce A reactors, adding nearly 125 MW of clean power to the provincial grid.

• All 480 calandria tubes installed in Unit 4 reactor, 25 days ahead of schedule
• Six-axis robot inserts and rolls tubes to exact diameter, cutting radiation exposure
• Siemens Energy Canada to supply turbines for four Bruce A reactors in 2028–2031
• Upgrade will add nearly 125 MW of clean electricity to Ontario's grid