A detailed CLOSED EXPANSION TANK DAILY preventive maintenance c checklists
1. Safety Precautions
2. Visual Inspection
- Look for wet spots or puddles around the tank.
- Check for rust or corrosion on the tank surface.
- Inspect seams and welds for any gaps or deterioration.
- Examine insulation for tears or missing sections.
- Ensure insulation is dry and free from moisture.
- Look for any signs of mold or mildew on insulation.
- Inspect fittings for cracks or breaks.
- Check connections for tightness and signs of wear.
- Look for any leaks around fittings or joints.
- Look for wet spots or puddles around the tank.
- Check for rust or corrosion on the tank surface.
- Inspect seams and welds for any gaps or deterioration.
- Examine insulation for tears or missing sections.
- Ensure insulation is dry and free from moisture.
- Look for any signs of mold or mildew on insulation.
- Inspect fittings for cracks or breaks.
- Check connections for tightness and signs of wear.
- Look for any leaks around fittings or joints.
- Look for dark spots or discoloration on the tank.
- Check for any rust or unusual color changes.
- Assess the area around the tank for stains.
- Verify that all labels are clearly readable.
- Check for any missing or damaged tags.
- Ensure that safety and operational information is visible.
- Inspect mounting brackets for integrity.
- Ensure the tank is level and securely fastened.
- Look for any misalignment that could cause stress.
- Check the floor around the tank for water.
- Look for dampness on walls or nearby surfaces.
- Assess drainage areas for blockages or issues.
- Ensure access pathways are clear and unobstructed.
- Remove any tools or materials near the tank.
- Check for any equipment that could block access.
- Inspect pipes for cracks, leaks, or corrosion.
- Check for proper insulation on pipes.
- Ensure that pipe supports are secure and intact.
- Observe the tank during operation for excessive movement.
- Check for loose bolts or fasteners at mounting points.
- Listen for unusual noises indicating vibration issues.
- Check that all drain valves are tightly closed.
- Inspect access points for proper sealing.
- Ensure that no leaks are present at access points.
- Inspect barriers for structural integrity.
- Ensure guards are properly positioned around the tank.
- Check for any signs of wear or damage to safety equipment.
3. Pressure and Temperature Checks
4. Fluid Level Assessment
5. Valve Inspection
- Observe the valves during operation.
- Listen for unusual sounds indicating issues.
- Verify that they open and close completely.
- Inspect all valve connections for moisture.
- Use a cloth to wipe around valve joints.
- Check for signs of rust or buildup.
- Identify stiff or hard-to-turn handles.
- Apply suitable lubricant to the handle.
- Operate the handle several times to distribute.
- Observe the valves during operation.
- Listen for unusual sounds indicating issues.
- Verify that they open and close completely.
- Inspect all valve connections for moisture.
- Use a cloth to wipe around valve joints.
- Check for signs of rust or buildup.
- Identify stiff or hard-to-turn handles.
- Apply suitable lubricant to the handle.
- Operate the handle several times to distribute.
- Look for discoloration or flaking paint.
- Check for any visible cracks or dents.
- Use a flashlight for better visibility.
- Turn the valve handle slowly.
- Ensure it moves freely without effort.
- Listen for any grinding or sticking noises.
- Examine seals for cracks or deformation.
- Check for any signs of leakage around seals.
- Replace seals if any damage is found.
- Verify valve alignment with system design.
- Ensure sensors are functioning correctly.
- Adjust settings if parameters are not met.
- Inspect labels for wear or fading.
- Clean any obscured areas for clarity.
- Replace any damaged or missing labels.
- Check for any physical blockages around actuators.
- Test actuator movement to ensure responsiveness.
- Lubricate any moving parts as necessary.
- Record specific valve issues in maintenance log.
- Note locations and severity of problems.
- Schedule repairs or replacements as needed.
6. Air Vent and Relief Valve Functionality
- Open the air vent slowly.
- Listen for air escape to confirm operation.
- Check for any visible blockages or debris.
- Ensure the vent opens and closes without resistance.
- Examine the valve body for corrosion or damage.
- Check the actuator for proper movement.
- Look for leaks around the valve connections.
- Assess the condition of the spring for fatigue.
- Use a pressure gauge to measure the setting.
- Adjust the pressure according to manufacturer specifications.
- Ensure the setting is within operational limits.
- Document any adjustments made during the check.
- Open the air vent slowly.
- Listen for air escape to confirm operation.
- Check for any visible blockages or debris.
- Ensure the vent opens and closes without resistance.
- Examine the valve body for corrosion or damage.
- Check the actuator for proper movement.
- Look for leaks around the valve connections.
- Assess the condition of the spring for fatigue.
- Use a pressure gauge to measure the setting.
- Adjust the pressure according to manufacturer specifications.
- Ensure the setting is within operational limits.
- Document any adjustments made during the check.
- Inspect all joints and connections for moisture.
- Look for rust or deterioration on the vent.
- Use a leak detection solution to identify small leaks.
- Ensure proper sealing materials are in place.
- Verify all bolts and connections are tight.
- Check for any movement or play in the valve.
- Ensure the valve is mounted according to specifications.
- Look for any signs of misalignment.
- Inspect the discharge line for kinks or obstructions.
- Ensure the discharge is directed away from personnel.
- Check that the line slopes downward for drainage.
- Confirm the discharge outlet is clear and accessible.
- Carefully lift the valve manually using the lever.
- Observe the valve opening and closing smoothly.
- Listen for any unusual noises during operation.
- Return the valve to its closed position securely.
- Remove the valve cover if necessary.
- Check sealing surfaces for scratches or wear.
- Clean any debris from the sealing area.
- Replace seals if they show signs of damage.
- Record the date and time of inspection.
- Note any issues or repairs made.
- Log the operational status as pass or fail.
- Include technician's name and signature.
- Obtain the latest manufacturer manuals.
- Compare current settings and conditions to specifications.
- Check for any updates or recalls on the equipment.
- Ensure all operational practices meet compliance requirements.
7. System Check
- Inspect for visible cracks or corrosion.
- Look for wet spots or water accumulation.
- Check insulation for dampness or damage.
- Listen for hissing sounds indicating gas leaks.
- Tighten any loose bolts or clamps.
- Inspect seals for integrity and wear.
- Test connections for leaks using soapy water.
- Confirm that joints are properly aligned.
- Listen for grinding or rattling sounds.
- Check for excessive vibration in pipes.
- Identify noise sources and assess their impact.
- Document any irregularities for further inspection.
- Check mountings for tightness and support.
- Ensure the tank is level and not tilting.
- Inspect for any signs of movement or shifting.
- Confirm anchor points are secure.
- Inspect insulation for tears or gaps.
- Ensure insulation is suitable for temperature ranges.
- Check for moisture buildup indicating inadequate insulation.
- Replace damaged insulation as necessary.
- Examine piping layout for correct flow arrows.
- Verify connections to and from the expansion tank.
- Check for any obstructions that could alter flow.
- Ensure all valves are positioned correctly for optimal flow.
- Look for residue or stains around the valve.
- Test the valve manually to ensure it opens and closes.
- Check the valve's sealing surface for wear or damage.
- Ensure valve is free from corrosion and debris.
- Check gauge readings against known standards.
- Inspect for physical damage or leaks.
- Ensure gauges are properly connected.
- Calibrate or replace gauges as necessary.
- Inspect for rust, discoloration, or flaking.
- Check welds and joints for integrity.
- Evaluate the surrounding environment for corrosion impact.
- Document and address any findings.
- Remove the access cover for inspection.
- Look for cracks, tears, or blisters on the diaphragm.
- Check for signs of rust or corrosion on metal components.
- Ensure diaphragm is securely attached to the tank.
- Refer to manufacturer specifications for sizing.
- Calculate system volume and required expansion capacity.
- Check for compatibility with the system's pressure and temperature.
- Ensure the tank is suitable for the fluid type.
- Listen for unusual noises indicating mechanical issues.
- Check the pump's flow rate against specifications.
- Inspect for vibrations or overheating during operation.
- Review maintenance logs for any recent issues.
- Test sensor readings against known benchmarks.
- Ensure control signals activate system components as intended.
- Inspect wiring and connections for wear or damage.
- Confirm calibration settings are within the required range.
Use in Manifestly