Nuclear Energy Systems HeadquartersMitsubishi Advanced PWR Plant Top
Improved Economy Enhanced Safety Improved Reliability Advanced Operability and Maintainability Harmonization with the Environment
3.Improved Reliability

High-performance Reactor Coolant Pump
The reactor coolant pumps for the APWR plants have achieved high capacity and high efficiency through drastic design improvements of the impeller and diffuser configurations. A new type of shaft seal and low alloy steel casing is applied to pursue a long service life and the reliability.
Basic Specification
Main item Current 4 Loop Advanced PWR
Type Vertical Single-stage diagonal flow(Model 93A-1) Vertical Single-stage diagonal flow(Model 100A)
Flow rate 20,100m3/h/loop 25,800m3/h/loop
Pump head Approx.84m Approx.91m
Motor shaft power Approx.4,480kW Approx.6,000kW

Use of Stud Bolt
Cobalt-free Bearing
Low-alloy steel casing

 Advanced Seal
Improved Hydraulic Characteristics

*4.Advanced Operability and Maintainability

Nuclear Energy Systems Headquarters

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