Valves MCQ

Topic	Views	Activity
When the valve was remotely opened and closed to verify operability, the measured valve stroke time in each direction was 15 seconds, which is shorter than normal for this valve ___	266	March 5, 2021
A typical motor-operated valve has been returned to service following a complete maintenance overhaul of the valve and actuator ___	296	March 5, 2021
Which one of the following types of similarly sized valves requires the most manual valve stem rotation to move the valve from fully open to fully closed ___	662	March 5, 2021
A typical motor-operated valve (MOV) has just been opened from the main control room, and the breaker for the MOV has been opened ___	462	March 5, 2021
When manually closing a motor-operated valve, why must the operator avoid using excessive valve seating force ___	190	March 5, 2021
A surveillance test procedure is being performed on a typical motor-operated valve (MOV) with a declutch lever that is used in an emergency core cooling system (ECCS) application ___	249	March 5, 2021
A typical motor-operated valve with a declutch lever is installed in an emergency core cooling system (ECCS) application ___	314	March 5, 2021
When the manual declutch lever of a motor-operated valve is moved out of the normal position, it ___ the motor and ___ the handwheel	236	March 5, 2021
When manually positioning a motor-operated valve, why must care be taken to avoid using excessive valve seating/backseating force ___	216	March 5, 2021
Two common types of check valves used in nuclear power plants are ___	209	March 5, 2021
Prior to shifting a valve controller from automatic to manual control, why should the automatic and manual controller output signals be matched ___	189	March 5, 2021
When transferring a valve controller from the manual mode to the automatic mode, the automatic valve controller output signal should be ___ the manual valve controller output signal at the time of transfer	211	March 5, 2021
Refer to the drawing of a water supply pump with two suction sources. All motor-operated valves (MOVs) are currently closed ___	488	March 5, 2021
An adjustment has just been completed on the packing gland of a motor-operated gate valve to stop a minor stem leak ___	221	March 5, 2021
During a local inspection of a manually operated 12-inch gate valve, the valve stem is observed to extend outward from the valve handwheel by 1 inch ___	213	March 4, 2021
Which one of the following is a generally accepted method for locally verifying that a manual valve is fully closed in a depressurized piping system ___	190	March 4, 2021
To verify a manual valve in an operating system is closed, the operator should observe valve position indication and operate the valve handwheel in the ___	483	March 4, 2021
Which one of the following is a generally accepted method for locally verifying that a manual valve is fully closed in a depressurized static piping system ___	202	March 4, 2021
To verify the position of a fully open manual valve in an operating system, the operator should operate the valve handwheel ___	263	March 4, 2021
To verify that a manual valve in a pressurized water system is closed, the operator should observe valve position indication and operate the valve handwheel in the ___	197	March 4, 2021
Which one of the following is not a generally accepted method for locally verifying that a valve is open ___	295	March 4, 2021
The valve actuator may be shown with or without applied air pressure ___	306	March 4, 2021
Which valves are currently shown in their failed (i.e., no air pressure applied to the actuator) positions ___	800	March 4, 2021
Refer to the drawing of four air-operated valves ___	463	March 4, 2021
Refer to the drawing of a pneumatically-operated valve. The valve actuator may be shown with or without air pressure applied to it	354	March 4, 2021
Refer to the drawing of a spring-loaded air-operated valve in which the solenoid is shown energized ___	243	March 4, 2021
The figure currently depicts normal air supply pressure and an energized solenoid. What will be the valve position following a loss of electrical power to the solenoid ___	260	March 4, 2021
Refer to the drawing of a spring-loaded air-operated valve shown in a throttled position ___	346	March 4, 2021
How will a typical motor-operated valve respond to a loss of electrical power to the valve actuator ___	678	March 4, 2021
Refer to the drawing of an open system with subcooled water flowing through valves A, B, C and D ___	237	March 4, 2021