Reactor Officer Exam: The plant is at 90% power following a downpower for work on Heater Drain Pu...

Question

The plant is at 90% power following a downpower for work on Heater Drain Pump A. Startup Channel A was removed for maintenance and the Startup HV Control Selector Switch is aligned to the OFF position. Maintenance has been completed and the NPO goes to realign the Startup Channel to service. The NPO inadvertently turns the Startup HV Control Selector Switch to ON and walks away. What is a possible effect of this action?

AnswerChoose the correct answer.Choose all that apply. Correct Partially correct Incorrect Don't Know

  1. A
    Correct Answer
    Audio Count Rate amplifier automatically turns off.
  2. B
    Correct Answer
    The associated Boron Dilution Monitor fails low.
  3. C
    Correct Answer
    CPC A trip on DNBR and LPD occurs.
  4. D
    Correct Answer
    Startup Channel A detector is damaged.
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Published on by U.S. Nuclear Regulatory Commission
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