These projects consisted of planned outages in Bruce A Units 3 & 4 to upgrade two Turbine Rotor Sets consisting of one high pressure (HP) and three low pressure (LP) modules each, as well as the associated condenser modifications. The new LP turbines were designed to improve the existing unit availability and performance while addressing life-limiting issues to reduce erosion of turbine stationary parts and increasing recommended maintenance intervals. Unit 4 was completed on schedule and under budget. Unit 3 is in the planning stage.

The major work of the projects consisted of:

• Acceptance of the new 360,000-lb. rotors and transportation to the designated Unit
• Disassembly of the HP & LP modules to the half joints
• Cutting of all steam lines
• Removal of the inner casings and existing rotors
• Modifications to increase steam flow
• Reassembly of the units with new rotors
• Refurbishment of the bearings and related hardware
• Radiological testing, decontamination, and removal of the scrap

Unit 4 was successfully completed on time.