Which plants? Astravets (Belarus) was started planning in 2006 and won't be live until 2021 (hopefully). Shidao Bay (China) has been in construction for a decade with the full plan being 20 years (China's largest nuke plant in progress). Kakrapar (India) is on a ~10 year construction cycle for most of their units. Mochovce (Slovakia) is at like 14 years in their construction schedule. Barakah (UAE) is at 8 years and counting in just construction.
Fuqing (China) and Shin Hanul (Korea) are closest and took 5-6 years per additional unit counting just construction and not planning. The new Shin-Hanuls (3&4) were scheduled for 4 year constructions but I think both are indefinitely suspended and Shin Hanul 2 is still being loaded 7 years after groundbreaking. These figures don't include the initial infrastructure building which would add 1-2 years (adding new units is much faster and also saves planning time).
http://euanmearns.com/how-long-does-it-take-to-build-a-nuclear-power-plant/
As you can see some of the plants took only 3 years to build. Where there's a will - there's a way.
most modern nuclear reactors are built from planning to finish in 5 years
Which plants? Astravets (Belarus) was started planning in 2006 and won't be live until 2021 (hopefully). Shidao Bay (China) has been in construction for a decade with the full plan being 20 years (China's largest nuke plant in progress). Kakrapar (India) is on a ~10 year construction cycle for most of their units. Mochovce (Slovakia) is at like 14 years in their construction schedule. Barakah (UAE) is at 8 years and counting in just construction.
Fuqing (China) and Shin Hanul (Korea) are closest and took 5-6 years per additional unit counting just construction and not planning. The new Shin-Hanuls (3&4) were scheduled for 4 year constructions but I think both are indefinitely suspended and Shin Hanul 2 is still being loaded 7 years after groundbreaking. These figures don't include the initial infrastructure building which would add 1-2 years (adding new units is much faster and also saves planning time).
http://euanmearns.com/how-long-does-it-take-to-build-a-nuclear-power-plant/ As you can see some of the plants took only 3 years to build. Where there's a will - there's a way.