Fire extinguishing cover for concrete pit under electrical transformer with baffles plates EXTICOV-LHD®

with natural flame extinction

EXTICOV-LHD® suffocating gratings for concrete retention pits in electrical transformers respond to the risks of hydrocarbon pool fires in transformers. This anti-fire system, tested at the MFPA LEIPZIG (expertise -GU IV/99-01) and at the SP TRI BORAS (expertise of the technical research institute), complies with current French and international standards and laws, and allows pits to be rehabilitated by replacing the sufocating pebble bed in the transformer pit. Description The EXTICOV-LHD® system is recommended for outdoor use and/or use with high levels of organic contamination: For recovery pits, fitted with fire-stop flaps, which communicate with either a fire-stop siphon or a remote pit directly. For so-called full retention pits, where at least 100% of the volume of oil potentially on fire will be in the retention pit EXTICOV-LHD® roofing is made up of prefabricated, custom-made LHD® grating frames. The various elements are welded into panels. These are then installed at the top of the pit on specially designed angles, forming a 3-in-1 perforated structure floor: fireproof, slip-resistant and a handling area. The EXTICOV-LHD® grating fire blanket owes its fire-retardant effect to the perforated structure of its surface, which allows only a reduced supply of oxygen to the source of the fire. EXTICOV LHD gratings are a former patented technology, specially designed to accelerate the passage of burning hydrocarbons into the pit under the gratings, even more quickly, consistently and effectively over time than “old” models of single, double-sloped or multi-sloped shutters. Once the hot oils are “trapped” in the pit,