On the road to the “nuclear renaissance,” Canada’s nuclear-power industry hit a speed bump. Declining electricity demand has scotched plans to add as much as 7,200 MW of greenfield nuclear powerplants in Ontario. But even as it withdrew applications for eight new reactors at two sites, the country’s largest independent generator pledged to complete refurbishment of two laid-up units on its flagship site and to continue developing new nuclear powerplants in Saskatchewan and Alberta. If built, the plants in those provinces would be western Canada’s first nuclear plants. Photo: Babcock & Wilcox Canada Ltd. Babcock & Wilcox Canada is supplying
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.