The plant has been in a maintenance outage. Plant conditions have been established to start No. 11 and No. 12 Recirc Pumps in preparation for reactor startup.
The Operator places hand switch 2A-S1A(No. 11 MG SET DRIVE MOTOR) to START and observes normal panel indication for start of the MG Set drive motor.
The Operator then places hand switch HS-2A-S7A(MO-2-53A PUMP DISCHARGE) to OPEN and holds it.
Shortly after, the following alarms are received.
• 4-C-1(RECIRC A LOCKOUT)
• 4-C-21(RECIRC A STARTUP SEQUENCE INCOMPLETE)
• 4-C-31(RECIRC DRIVE MOTOR A TRIP)
Which of the following caused the trip of the No. 11 Recirc MG Set?
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