A typical motor-operated valve with a declutch lever is installed in an emergency core cooling system (ECCS) application.
The ECCS actuation signal is designed to energize the valve motor and open the valve.
The valve is currently open, but being manually/locally closed by a technician as required by a surveillance test procedure.
The declutch lever has been operated and released, and the valve is being closed by operation of the valve handwheel.
If an ECCS actuation signal is received, how will the valve be affected?
A. The handwheel will disengage and the valve will automatically open.
B. The handwheel will disengage and the valve will remain in the current position.
C. The handwheel will remain engaged and the valve will automatically open.
D. The handwheel will remain engaged and the technician can continue to close the valve.
Show Answer
Answer: A
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