Project Overview
The Power Grid Cable Trench Cover Upgrade Project was carried out across multiple substations in several provinces. The original concrete cable trench covers posed a major challenge due to their heavy weight, making frequent daily inspections difficult and labor-intensive. To solve this, the project replaced the old covers with GREENTECH lightweight composite cable trench covers, which meet all load-bearing requirements while significantly reducing weight. This upgrade has made on-site inspections smoother and more efficient, with crews enjoying easier handling, less physical strain, and the added benefits of excellent insulation and corrosion resistance in the substation environment.
The Challenge: Heavy Concrete Covers & High-Frequency Inspections
In the power transmission and distribution industry, routine inspections are non-negotiable. For a major national grid operator managing multiple substations across various provinces, one recurring challenge stood out: the cable trench covers.
Originally, the substations were equipped with traditional concrete cable trench covers. While durable, these concrete covers presented a significant practical issue after years of service—their considerable weight made them difficult to open, close, and handle.
For field operation and maintenance (O&M) crews who need to open these covers frequently during high-frequency inspection tours, the heavy lifting became a daily strain. This not only affected work convenience but also slowed down overall inspection efficiency. It was clear that an upgrade was necessary—one that prioritised ease of use without compromising on safety or load-bearing capacity.
The Solution: GREENTECH Composite Materials
After a thorough evaluation, the utility company selected the GREENTECH composite cable trench cover to replace the outdated concrete units across multiple project sites.
The GREENTECH covers were chosen for three key performance attributes:
Lightweight Design for Easy Handling: Unlike concrete, the advanced composite material significantly reduces the overall weight of each cover. This makes manual lifting, sliding, and resetting far more effortless for field staff.
Guaranteed Load-Bearing Capacity: Despite being lighter, the GREENTECH covers still meet or exceed the stringent load-bearing requirements for substation environments. There is no trade-off between portability and structural integrity.
Superior Insulation & Corrosion Resistance: Given the sensitive electrical environment of a substation, the cover’s excellent electrical insulation performance is critical. Furthermore, the material is inherently resistant to corrosion from chemicals, moisture, and UV exposure, ensuring a much longer service life in harsh outdoor conditions compared to steel-reinforced concrete.
The Results: Smoother Operations & Enhanced Efficiency
Following the implementation of the GREENTECH composite cable trench covers, the on-site teams reported immediate and measurable improvements.
Streamlined Inspection Workflow: Substation personnel noted that the inspection process became noticeably smoother. Opening and closing the covers now requires less physical effort, allowing crews to focus more on the inspection tasks themselves rather than wrestling with heavy equipment.
Improved Ergonomics & Safety: The reduction in manual lifting strain means a lower risk of workplace injuries. The non-conductive properties of the composite material also add an extra layer of safety in live electrical environments.
Long-Term Reliability: With their robust resistance to corrosion and environmental degradation, the new covers are expected to provide dependable service for years to come, reducing future replacement cycles and maintenance costs.
Conclusion
Upgrading from heavy, traditional concrete covers to GREENTECH lightweight composite cable trench covers proved to be a strategic decision for this national grid project. By addressing the core issue of operational convenience, the utility was able to enhance inspection efficiency, improve crew safety, and ensure long-lasting reliability across multiple provincial substations.
Looking for a smarter solution for your cable trench or access covers? Explore our range of high-performance GREENTECH composite products designed to make maintenance easier and safer.
