LHD® gratings are engineered to suppress transformer oil fires by combining rapid oil drainage with restricted airflow.
If oil leaks onto the grating, the round openings allow it to drain quickly into the containment bund below. This reduces the amount of combustible oil left around the transformer.
At the same time, the low-hole-density design limits the open area to 5%. By restricting the airflow through the grating, less oxygen reaches the fire, helping to reduce combustion and limit the spread of flames.
What this means for your installation:
Protection of oil-filled transformers in transmission and distribution networks.
Fire suppression and oil containment for critical power infrastructure.
Supporting HVDC and offshore wind grid connection projects.
Protection of transformers and associated electrical infrastructure.
Substations, transformer compounds and grid connection assets.
Protection of high-voltage transformers supplying critical facilities.
Oil-filled transformers contain significant volumes of insulating oil. In the event of a transformer failure, leaking oil can ignite rapidly. Such cases can create serious risks to any personnel or equipment close to the station, as well as harm the environment and continuity of power supply.
Transformer bunds must therefore perform two critical functions simultaneously:
A fire protection system that cannot achieve both objectives may leave critical assets exposed to unnecessary risk.
For decades, LHD® fire-protection gratings have been specified for transformer stations, substations, offshore installations and critical energy infrastructure where reliable fire suppression, rapid oil drainage and long-term durability are essential.
Project References
LHD® has been installed on a wide range of critical infrastructure projects in the UK and Europe.
LHD® gratings require very little maintenance while offering an excellent strength-to-weight ratio, R11 slip resistance and straightforward installation and replacement.
The design provides clear access for routine inspection of bunds and drainage systems, with better visibility than traditional stone-filled solutions.
Available in steel, stainless steel and aluminium, the gratings are made from 100% recyclable materials and can be supplied with galvanised coatings up to 100 μm for more demanding environments.
When correctly specified and maintained, LHD® delivers reliable performance for decades, including in coastal, industrial and high-exposure locations.
With decades of experience in steel grating and safety solutions, we're ready to support your project from first idea to final delivery.
Let us help you with your next project.
