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January 20, 2015

Cheongpyeong Hydro Power Plant Units 1 and 2 commence operation after Major Overhaul

A major overhaul of Unit 1 and Unit 2 was undertaken at the Cheongpyeong Hydro Power Plant of Korea Hydro & Nuclear Power Co., Ltd., with Unit 1 recommencing commercial operation in May 2014 and Unit 2 in June of the same year.
The vertical-shaft Kaplan turbines and generators at the plant first entered service in 1943, with an upgrade to the turbine runners and the stator coils and cores of the generators being undertaken in 1993. The latest overhaul consisted mainly of repairs to the flow surfaces of the turbines and upgrades to the stainless-steel guide vanes, as well as to the generator rotor, governor, exciter, unit control panels, and other electrical equipment.
Hitachi Mitsubishi Hydro Corporation intends to continue supplying products for major overhauls of existing power plants, including features such as lower environmental risks and better maintenance and performance.