Materials handling systems provider Dock Design & Layout (DDL), which has entered into a distribution agreement with French-based indus- trial doors solutions manufacturer Nergeco, will supply the new generation of Nergeco extreme condition doors to South African mining houses.
“The new Nergeco extreme condition door is suitable for materials handling applications, including the rapid move- ment of materials in and out of mines. These production doors are also used to keep dust, created by extreme wind forces and climatic conditions, from blowing into production or processing areas, vehicle maintenance workshops and contaminating materials being conveyed by conveyor belts and haul trucks,” says DDL MD Andrew Stewart.
He says, after years of research and development, Nergeco has produced a product to meet the mining industry’s need for safe, easy-to-install, self-supporting production doors, which increase productivity and eliminate the stoppage of materials handling commonly experienced when operating conventional, heavy steel doors. Further, existing doors can swiftly be retrofitted with the new high-speed extreme doors.
“Standard doors hinder positive production levels. For material to be conveyed from one point to another on the mine, a door inevitably needs to be opened. Production or conveying must be stopped to accommodate the slow cranking of heavy steel doors,” Stewart explains.
He says having high-speed automated doors is becoming increasingly important on mines because higher production levels are now called for.
Stewart points out that a further bene- fit of Nergeco extreme condition doors is their insulating properties. The doors are used to prevent dust from contaminating air shafts and also to maintain a cool environment for mineworkers.
“South Africa is known for underground mining operations, which are notoriously hot. The temperature underground is controlled by ventilation shafts. The provision of cooled air is necessary so that workers have a constant supply of cold air while working underground.
“Extreme doors are installed under- ground for this purpose, as their sealing mechanism allows cool air to be trapped over long periods once the doors are closed,” he states.
A further consideration is that South African legislation has taken safety to new heights, especially in the mining industry. “Conventional steel doors are dangerous because they can drop like a guillotine. The Nergeco extreme door has a soft bottom edge and folds up upon impact, protecting workers from injury and materials handling equipment from damage.”
Another important application for these doors is in vehicle maintenance work- shops. “Mines are increasingly building on-site maintenance warehouses that allow them to service their trucks on site. “Mining trucks and equipment have to be maintained, bearing in mind that these units cost millions. Mining houses are, therefore, insisting that the doors of these workshops are sealed to keep the air inside as clean as possible during vehicle maintenance and the changing of air filters and oil, besides other activities.”
Stewart highlights that Nergeco extreme condition doors have multiple benefits, including being fabricated from high- performance, long-lasting flexible material that is rustproof, waterproof and easy to maintain.
They are durable, withstanding harsh, dusty conditions; they require low maintenance and can be fitted with translucent rows of windows, thereby saving electricity by allowing natural light to enter buildings.