Abstract: A nuclear power plant includes a moisture separator reheater, a condenser, and a working steam system for a steam jet air ejector for continuously extracting a non-condensable gas from the condenser. The steam jet air ejector includes a pressure-regulating unit configured to regulate a working steam supplied to the steam jet air ejector from the condenser to a specified pressure, a working steam supply system configured to supply the working steam to the pressure-regulating unit, and a working steam delivery system configured to deliver the working steam regulated by the pressure-regulating unit to the steam jet air ejector. The working steam supply system includes a working steam source of a reactor main steam or moisture separator reheater scavenging steam, and a steam switching control system steam for switching a jet air ejector working steam from the reactor main steam to the moisture separator reheater scavenging steam by moisture separator reheater scavenging steam pressure.

Abstract: A steam turbine includes two or more rotating blades and a diaphragm outer ring. Each of the rotating blades includes a tip cover, moisture-trapping grooves, a droplet ejection hole, and a drain guide groove. The tip cover is provided to a tip of each of the rotating blades and is connected in contact with another tip cover adjacent to the tip cover. The moisture-trapping grooves are formed in a longitudinal direction of each of the rotating blades. The droplet ejection hole is to connect an outside of the tip cover on a side of the diaphragm outer ring with an inside of the tip cover. The drain guide groove is to connect ends of the moisture-trapping grooves on the side of the tip cover with the droplet ejection hole. The diaphragm outer ring includes a drain pocket which faces the droplet ejection hole.

Abstract: A steam turbine includes two or more rotating blades and a diaphragm outer ring. Each of the rotating blades includes a tip cover, moisture-trapping grooves, a droplet ejection hole, and a drain guide groove. The tip cover is provided to a tip of each of the rotating blades and is connected in contact with another tip cover adjacent to the tip cover. The moisture-trapping grooves are formed in a longitudinal direction of each of the rotating blades. The droplet ejection hole is to connect an outside of the tip cover on a side of the diaphragm outer ring with an inside of the tip cover. The drain guide groove is to connect ends of the moisture-trapping grooves on the side of the tip cover with the droplet ejection hole. The diaphragm outer ring includes a drain pocket which faces the droplet ejection hole.