Mammoet Returns to Bruce Power for Unit 4 Steam Generator Exchange
Heavy-lift specialist Mammoet is returning to Bruce Power’s Major Component Replacement (MCR) project in Ontario, Equipment Journal reports, this time to handle steam generator work at Unit 4 of the Bruce A station. The MCR project, underway since 2020, covers replacement of major components across six reactor units at Bruce A and B, stations that together supply more than 30% of Ontario’s power and produce medical isotopes used in cancer treatment. Mammoet previously supported steam generator exchanges at Unit 3 in 2024 and will now perform similar work at Unit 4, relocating two steam drums and exchanging eight steam generators over an expected six-month timeline. The scope, contracted through the Steam Generator Replacement Team (SGRT), a joint venture of Aecon, Framatome, and Unite Engineers and Constructors, will again rely on Mammoet’s 1,600-tonne PTC-35 ring crane, jack-and-slide equipment, and Self-Propelled Modular Transporters to move retired steam generators into long-term storage.
What It Means for Subcontractors
- Specialty heavy-lift and rigging firms should note the six-month Unit 4 scope as a template for staffing and equipment planning on similar nuclear refurbishment exchanges, where ring cranes and SPMTs are favored over crawler cranes due to site wind conditions and space constraints.
- Trades supporting SGRT should track upcoming reactor unit turnovers at Bruce A and B, since the MCR project’s multi-unit scope points to recurring subcontract packages for lifting, transport, and jack-and-slide services.
- Firms bidding similar utility-scale lift work can reference Mammoet’s PTC-35 ring crane deployment as a benchmark for equipment selection in high-wind, space-constrained industrial sites, an approach that reduces counterweight handling risk compared to crawler cranes.
