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UK ABWR Reactor Internal Pump (RIP)

Each Reactor Internal Pump (RIP) is directly mounted to the bottom of the RPV and supplies coolant (water) to the reactor core. The station’s power output can be controlled by changing the RIP’s rotation speed. This design takes away the need for external circulation pipes and as such gives an even greater reduction in potential radiation  exposure for workers. This exposure is well within UK limits – and far lower than day-to-day exposure to natural background radiation. This is a major design difference between the UK ABWR and previous designs of BWR.

Reactor Internal Pump diagram with labels 1 to 15 corresponding with the list below Motor Cover Stator Rotor Wet Motor Nozzle Diffuser Wearing Auxiliary Cover Thrust Disk Tilting Pad Radial Bearing Inspection Window Nozzle Gap Welding Reactor Pressure Vessel Impeller and Shaft
  1. Impeller and Shaft

    1. Impeller and Shaft

    Impeller and Shaft

  2. Reactor Pressure Vessel
  3. Welding
  4. Nozzle Gap
  5. Inspection Window
  6. Tilting Pad Radial Bearing

    6. Tilting Pad Radial Bearing

    Tilting Pad Radial Bearing

  7. Thrust Disk

    7. & 8. Thrust Disk & Auxiliary Cover

    Thrust Disk & Auxiliary Cover

  8. Auxiliary Cover
  9. Wearing
  10. Diffuser

    10. Diffuser

    Diffuser

  11. Nozzle
  12. Rotor

    12. Rotor

    Rotor

  13. Stator

    13. Stator

    Stator

  14. Wet Motor
  15. Motor Cover

    15. Motor Cover

    Motor Cover

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