December 15, 2017

Opening doors to long-term sustainability

Megadoors superior quality rugged automated door solutions from Maxiflex engineered to meet safety efficiency & productivity on mines

Maxiflex’s Megadoors and Albany RR1000 rubber doors bring immense benefits to mining operations.

The local mining industry is under severe pressure to find ways of reducing operational costs and improve productivity in order to ensure a sustainable future. Consequently, plants, systems, processes and equipment are being scrutinised to identify all possible areas where efficiencies can be increased and unnecessary costs eliminated.

Noticeably, door systems are among the equipment that is being adopted. Nevertheless, not all doors are suitable for the mining environment, the Managing director of Maxiflex, Bram Janssen, clarifies to African Mining Brief. “When it comes to door systems for the mining industry, there can simply be no compromise on safety, efficiency and ruggedness,” he says.

Janssen elaborates that the doors must be energy efficient and tough enough to withstand dirty corrosive environments, high wind conditions and extreme temperatures. Most importantly, they have to pass the mines’ strict safety standards.

Doors engineered for mining

For the door systems that offer more value to mining operations, Janssen refers to the ASSA ABLOY range of vertical lifting fabric doors (better known as Megadoors) and the high-performance Albany RR1000 rubber doors. “These industry leading door brands tick all the mining criteria boxes. The doors are ideal for a wide range of facilities such as wash bays, truck shops, loading docks, maintenance facilities, parking garages, transportation centres, distribution facilities, wastewater management and utilities typically found on mines. These premium brands are manufactured by global automated door specialist, ASSA ABLOY Entrance Systems, an organisation with over half a century of engineering experience and expertise.”

Immense benefits

Megadoors and Albany RR1000 rubber doors bring immense benefits to mining operations, from a cost effective to a safety perspective, which are listed below.

  • Energy efficiency

Energy efficiency is a prominent feature of both doors. The Megadoor is considered to be one of the most energy efficient doors currently available on the market. The choice of a translucent fabric on the Megadoor helps minimise the carbon footprint and saves energy by providing natural ambient light in the interior which also enhances the working environment. Further, the operating speed of the Albany RR1000 offers energy savings through efficient interior climate control.

  • Safety

The doors are designed with promoting safety on mines in mind. For instance, Megadoors are designed with patented safety arrestors that prevent a ‘free-fall’ condition in the unlikely event of failed lifting mechanisms. More to the point, sophisticated controls and sensors protect the Megadoor and continuously monitor the opening. Through-beam photo eyes in the high-performance Albany RR1000 doors detect objects in the doorway and safely open the door before contact. These safe operating conditions protect workers.

  • Customisable

 Versatile, the Megadoor is suitable for both retrofits and new construction. It can be customised for a wide variety of access needs, for instance, around an existing crane and crane rails. In addition, for severe environments like wash bays,  there are multiple control alternatives, including PLC and self-diagnostic panels, as well as control panel enclosures designed for severe environments like wash bays.

Worth mentioning, the flexible design means there are no practical configuration limits to the size and configuration. Another notable feature is that, able to accommodate massive mining vehicles, the Megadoor vertical lifting fabric doors are designed to operate in the toughest environments, opening and closing quickly, reliably and smoothly many times a day under virtually any conditions.

  • Durability and reliability

The robust Megadoor vertical lifting fabric doors are manufactured from highly durable materials that easily cope with temperatures ranging from -35°C to +70°C. They are thus ideal entrance/exit solutions for extreme mining environments where doors are exposed to moisture, dust and very high or low temperatures, or where the door opening is large. A bespoke feature of these doors is their extreme design flexibility. Every door is individually designed to meet specific application requirements such as high wind load for example. Their unique design and structure offers durability, tightness, energy efficiency, operational reliability and minimum maintenance. With no hinges, springs, cables or couplings that can be damaged, these doors are damage resistant.

What’s more, the Albany RR1000’s chemical- and corrosion-resistant panels and frames ensure superb durability and performance. The thick, two-layer SBR rubber panel (lifetime warranty on the rubber curtain) protects against temperature extremes from -40°C to over 82°C. This strong panel, combined with heavy duty side frames and a patented Windlock guide system, provides resiliency against damage, harsh conditions and high wind loads of up to 200km per hour. Boasting the fewest moving parts for a door of its size, the door can literally be repaired within minutes without the special tools.

  • Increased productivity

The efficient high-performance Albany RR1000 rubber doors deliver high speeds and reliability in the most severe environments. With opening speeds of up to 1.5m per second, the doors contribute to increased productivity and decreased energy costs without compromising safety or operational efficiency. Engineered to cycle hundreds of thousands of times, the doors are built to withstand accidental impact and remain operational, reducing downtime; after a hit, the break-away bottom beam can be reset easily and quickly.

Overall lowest possible total cost of ownership

All things considered, both brands, Maxiflex’s Megadoors and Albany RR1000, combine numerous advantages to ensure lowest possible total cost of ownership for the end-user, designed to deliver strong, reliable efficient operation over their life span. Adopting them can help stressed mines achieve long-term sustainability.

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