Engineering at Coal Mines

Queensland has a rich and vast deposit of high-quality coal resources with over 34 billion tonnes of raw coal having been identified. It boasts a combination of thermal coal for power generation and over 8 billion tonnes of coking coal suitable for high quality steel milling (from Dept. of Natural Resources and Mines). Coal is extracted from the ground using both open-cut and underground mining operations and is then typically subject to further processing at Coal Handling and Processing Plants (CHPP) before being transported via conveyor, truck, rail or ship (or combination of these) to the buyer.

Orana Engineering has built a strong reputation within the coal industry, offering electrical, mechanical, structural and control systems engineering support to a wide range of clients spread throughout the Bowen and Surat basins. Our Townsville and Chinchilla offices are placed to offer local support for operations based in the Bowen and Surat Basins and to support the expansion of the coal industry into the Galilee Basin.

Our engineering services including design, project management, design drafting, revisions and drawing management are intended to support the fixed plant and surface infrastructure of mining operations including the CHPP and associated services such as onsite water treatment plants. We also support the underground coal mining operations providing conveyor installation designs and mine dewatering designs. As the industry is governed by specific legislation including the Coal Mining Safety and Health Act and Regulation, it is important that engineering consultants are fluent with these regulations, which Orana Engineering is.  Further information on the Act and Regulations can be found here.

Coal Mining Safety and Health Act 1999
Coal Mining Safety and Health Regulation 2017

Our engineering experience and expertise within the coal industry gives our personnel a first-hand understanding of the process and site practicalities. Explore the case studies below to see the services that we have offered to our clients in the coal sector.

Orana Engineering Coal Mining Engineering

UG Conveyor Installations – MG32 Tripper Chamber

Maingate roadways mined to accommodate longwall conveyors at Glencore’s Oaky No. 1 underground coal mine can vary from a few hundred meters to over 4 kilometres in length. Transporting vast quantities of coal over long distances requires a significant amount of power. In some cases the drive-head power is insufficient or is constrained by the allowable belt tension and an additional drive / power source is required to meet the required operating capacity. Commonly this additional power will come in the form of a driven conveyor tripper installed at a nominal point along the conveyor, which requires the appropriate excavation for the tripper installation inclusive of drives, tripper frame, braking and belt starter.

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UG Conveyor Installations – MG32 Tripper Chamber

Mobile Plant Electrical Drawing Books

To improve the maintainability of plant electrical systems and personnel safety, Glencore's Hail Creek Mine employed the drawing management services of Orana Engineering to create bound books of electrical drawings for Dragline 1 (DL001), Dragline 7 (DL007) and Shovel 14 (SH014). Multiple books were made for each machine (in A4 and A3 sizes).

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Mobile Plant Electrical Drawing Books

Conveyor Upgrade Project

Carborough Downs Coal underground mine located in Central Queensland, transitioned from a bord and pillar mining system to longwall mining and as a result required to upgrade the capacity of their coal clearance conveyor system. Orana Engineering was engaged to provide Client's Engineering assistance to deliver the final underground conveyor equipment to meet the longwall production schedule.

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Conveyor Upgrade Project

Yokogawa DCS Upgrade

Since 2005 Orana Engineering has provided 24/7 support for Glencore's Oaky Creek Coal control systems.  At the Coal Handling  and Preparation Plant (CHPP) OCC uses a Yokogawa DCS as the primary control system, which was originally installed in 1998.  The system is very robust and the hardware, software and its configuration has proven to be very reliable and highly cost effective.

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Yokogawa DCS Upgrade

Site DCS Support

Glencore's Oaky Creek Coal (OCC) Coal Handling and Preparation Plant (CHPP) utilises a Yokogawa Distributed Control System (DCS) for control and monitoring of their operation.  The system also incorporates Yokogawa’s OPC server and exaquantum data historian.  In addition, OCC utilises a number of Programmable Logic Controllers (PLC) for specific operational purposes, with a number of the PLCs interfaced back to the DCS for control and monitoring functions.

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Site DCS Support

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