Construction sites. Engines of all four primary coolant pumps were idled step by step at Unit 1 of Turkey’s Akkuyu NPP. Making the pumps ready for operation is a prerequisite for the beginning of circulation flushing and hydraulic pressure tests, in which the primary circuit will be filled with desalinated water to check the tightness and robustness of all its parts. The four pumps will ensure coolant circulation in the reactor core during the power unit operation. The Akkuyu NPP will have the latest-generation primary coolant pumps designed for VVER-1200 reactors. They use water rather than oil for lubrication and cooling, which improves fire safety and reduces the number of bearings, making the pumps more reliable. The Akkuyu Nuclear Power Plant will have four power units with Russian-designed Generation 3+ VVER reactors.