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Factory-direct FRP grating & access systems · Nanjing, China njlf.frp@gmail.com  |  +86 25 8491 0966
JINGLUE
FRP Grating Systems
Power Transmission · Alberta, Canada

Transmission Utility: 1,400 Non-Conductive Cable Trench Covers

LocationAlberta, Canada
Completed2024-07
Quantity1 400 trench covers
ProductsMolded grating covers 38 mm · Sealed-edge panels · Lift-clip hardware

The challenge

Steel trench covers needed periodic bonding checks, corroded at the edges, and had become a lift-injury concern. Winter snow-clearing machines crossed some runs, so covers had to carry wheel loads well beyond pedestrian duty. Utility standards allowed only non-conductive covers inside the fenced switchyard.

The solution

1 400 covers in 38 mm molded FRP with sealed edges and integral lift eyes, laid out run by run from the utility's trench survey; high-traffic machine routes upgraded to 50 mm panels with the load case documented. All covers finished in safety yellow with a gritted surface.

Outcomes

  • Bonding-check work orders for trench covers removed from the maintenance system
  • Two-person lift restored on every standard cover — manual-handling finding closed
  • Machine-rated covers performed through a full snow-season cycle
  • Utility issued a province-wide standard detail based on the project

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