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> control valve visual inspection
control valve visual inspection
Pre-Inspection Preparation
Ensure all safety protocols are followed.
Gather necessary tools and equipment (flashlight, inspection mirror, etc.).
Review relevant documentation (valve specifications, maintenance history).
External Condition Assessment
Inspect the valve body for signs of corrosion or damage.
Check for leaks around the valve body and connections.
Verify that all external components (actuators, positioners) are securely mounted.
Seal and Packing Inspection
Examine the valve seals for wear or deterioration.
Look for signs of leakage at the packing area.
Check the packing gland for proper adjustment.
Actuator Functionality Check
Observe the actuator for smooth operation during testing.
Ensure that the actuator linkage is intact and free of obstruction.
Check for any unusual noises during operation.
Position Indicator Verification
Confirm that the position indicator aligns with the valve's actual position.
Test the feedback signal (if applicable) for accuracy.
Inspect the electrical connections for wear or damage.
Overall Cleanliness Assessment
Check for debris or foreign substances on and around the valve.
Ensure that the valve is free from dust and contaminants.
Clean any visible buildup as necessary.
Documentation and Reporting
Record findings and any issues identified during the inspection.
Document any corrective actions taken or needed.
Update maintenance logs accordingly.
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