Cooling Tower
Routine Service & Maintenance
- Yearly servicing maintenance is provided.
- Scope of work includes inspection, cleaning, and maintenance tasks.
- A service report will be submitted after completion of the works.
Scope of Work
- Hot and cold-water basins will be cleaned and flushed.
- Make-up float valve and strainers will be cleaned and flushed.
- Fan belt cover internal will be cleaned and maintained.
- Fan blade angle will be checked for proper air-flow.
- Fan belts will be re-tensioned and pulleys will be re-aligned.
- Motor bearings and other movable parts will be checked and greased as necessary.
- Fan impeller will be inspected for wear and tear.
- Fan motor running amperes will be checked and measured.
- Infills will be washed and flushed with a low-pressure jet machine.
- Debris stuck at infills/louvers will be cleared, and general flushing of infills and spray fillings will be performed.
- Cooling tower external housing will be flushed and cleaned.
- General inspection of cooling tower parts will be conducted.
- Cold water basin will be refilled.
- Infills and spray filling will be removed for thorough flushing and cleaning, and then re-set to proper position (once a year).
- Internal structures and supports will be flushed to remove clogged dirt and debris (once a year).
- Corroded internal steel structures will be touched up with epoxy paint.
- Pump gaskets will be checked for leaks.
- Pump strainer will be dismantled, cleaned, and reinstalled.
Refurbishment services
Scope of Work
- Dismantling the existing worn-out fan blades assembly and hub.
- Installation of new aluminium/alloy fan blades assembly with the hub.
- Re-alignment, testing, and commissioning.
- Dismantling the existing worn-out fan housing, shaft, upper and lower bearings.
- Installation of new housing, shaft, and bearings.
- Re-alignment.
- Dismantling the existing worn-out fan motor.
- Installation of a new fan motor.
- Re-alignment and test run.
- Dismantling the existing worn-out V-belt.
- Installation of a new V-belt.
- Re-alignment.
- Dismantling the existing worn-out PVC infills.
- Disposal of old infills.
- Supply and installation of new PVC infills.
- Re-line, testing, and commissioning.
- Dismantling the existing worn-out drift eliminator blades and frames.
- Disposal of old frames and blades.
- Installation of new HDG frames with SS 304 bolts and nuts.
- Installation of new drift eliminator blades.
- Flushing and cleaning of all internal structures.
- Application of one coat of primer and one coat of epoxy paint to prolong the lifespan.
- Dismantling the existing worn-out spring isolator.
- Disposal of old isolator.
- Installation of new spring isolators (outer and inner).
- Dismantling the existing power isolator.
- Installation of a new 32A/4p/IP66 isolator.
- New wiring, conduit, and flexible joint.
- Dismantling existing butterfly valves and replacing with new valves.
- Replacement of motorized butterfly valves with actuators.
- Replacement of existing gate valves with new gate valves.
- Replacement of bolts, nuts, and rubber gaskets.
- Isolation of power supply for the pump under repair.
- Shutting off in/out valves and disconnecting electrical wiring.
- Dismantling the existing CWP pump and disposing of it.
- Area cleaning before installing the new pump.
- Supply and installation of new vertical in-line multistage centrifugal pumps.
- Connecting back the pipe connection with new rubber gaskets and HDG bolts & nuts.
- Testing and commissioning.
- Dismantling the existing worn-out flexible joint.
- Installation of a new rubber flexible joint with HDG bolts and nuts.
- Dismantling the existing worn-out and faulty pressure vessel tank.
- Supply, delivery, and installation of new pressure vessel tanks.
- Connection with stainless steel air valve, open valve, and testing.
- Dismantle existing worn-out and badly corroded internal structures.
- Fabricate new HDG structures and apply one coat of primer and two coats of epoxy paint.
- Flush, clean, and wire brush all internal structures, fan support, netting, and fan shaft housing.
- Apply one coat of primer and one coat of epoxy paint.
- Repair the joining at the cold-water basin to basin joining.
- Clean the basin and install capping PVC cutting pipe.
- Re-lay fiberglass, resin, and hardener for strengthening..
- Supply and install new HDG safety railing with SUS 304 bolts and nuts.
- Install a cage ring to the existing external ladder with SUS 304 bolts and nuts.
- Dismantle existing worn-out fan support and netting.
- Replace with locally fabricated hot-dipped galvanized fan support with SS 204 bots and nuts.
- Perform alignment and test run.
- Engaging a Licensed Electrical Worker (LEW) for SLD (Single Line Diagram) endorsement.
- Inspection to turn on the cooling towers and pumps for operation.
- Delivery of new materials, equipment, and necessary items to the site.
- Disposal of unwanted materials off-site.
Frequently Asked Questions
Water quality: High levels of dissolved minerals, such as calcium and magnesium, can increase the corrosiveness of the water. pH levels outside the optimal range can also accelerate corrosion.
Water Treatment: Implementing proper water treatment processes, including filtration, chemical treatment, and pH adjustment, can help control corrosion by minimizing the concentration of corrosive agents in the water.
Imbalances in fan blades, caused by uneven material distribution or damage, can result in excessive vibration, which may lead to premature wear of bearings and other components.
Alignment and Balancing: Ensure that fan blades are properly aligned and balanced to prevent vibration and optimize airflow distribution. This may involve adjusting blade angles, tightening fasteners, or using specialized balancing equipment.
Protecting sensitive data and ensuring cybersecurity measures are robust across the digital twin ecosystem is essential to prevent unauthorized access, data breaches, and privacy violations.
Invest in robust validation and verification processes to ensure the accuracy and reliability of digital twin models. Continuously update models based on real-world feedback and performance data.
Corrosion: While GRP tanks are resistant to corrosion, metallic components such as bolts and fittings can still corrode over time, leading to leaks and structural weakness.
Structural Reinforcement: Reinforce the structural integrity of the GRP tank by ensuring proper installation, adequate support, and adherence to manufacturer guidelines. Additionally, consider reinforcing vulnerable areas prone to impact or stress, such as corners and seams.
Rust formation on the surface of steel tanks is a visible sign of corrosion. If left unchecked, rust can penetrate the tank's surface and compromise its integrity.
Remove rust from the surface of the tank using appropriate methods such as wire brushing, sandblasting, or chemical treatment. Once rust is removed, apply rust-inhibiting coatings to prevent its recurrence.