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Inside Peach Bottom Atomic Power Station » Recirc motor-generator set

Recirc M-G set

Motor-generator sets in the reactor forced recirculation system for the Unit 3 reactor. Recirculation flow is the main power control in a BWR under normal operation: if flow is increased, core voiding decreases and reactivity increases until equilibrium is re-established at a higher power level. The MG set transfers a variable amount of power to the recirc pumps based on a special kind of oil-filled clutch between the motor and generator.


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