Engineering at Metalliferous Mines

Eloise Copper Mine purchased a Metso dual deck vibrating screen to replace an existing smaller screen and a second Omnicone cone crusher to provide a secondary crushing circuit for increased production and efficiency. Orana Engineering was engaged to develop a design solution and detailed drawings for the secondary crushing circuit which utilised as much existing equipment as possible. Orana Engineering was able to provide an efficient, practical design solution while minimising the associated design costs to provide site personnel with information required to refurbish and install the conveyor equipment necessary for the crushing circuit. Orana Engineering successfully completed the design within a tight project time frame and produced in excess of 100 detailed drawings.

Management at Carpentaria Gold’s Ravenswood Operation enlisted Orana Engineering to design a fall arrest system that could be easily removed and repositioned above multiple leach tanks, allowing for safe removal and servicing of tank agitators. From a site visit, Orana Engineering identified the need for an arrangement that could be easily disassembled and relocated to each leach tank. The design was challenging due to the varying nature of access structure members above tanks. Orana Engineering designers proposed an assembly utilising a common set of supporting columns with struts of varying lengths depending on the work location. A full set of shop fabrication and assembly drawings were issued with the final design providing safety for personnel working above open tanks.

Orana Engineering was engaged to design new sampling equipment for improved sampling effectiveness at Carpentaria Gold’s Ravenswood operations. A site visit was undertaken by Orana Engineering design staff to accurately record critical data. This enabled designers to produce a detailed 3D model which was used extensively during interactions with the client and ensured a fluent understanding of the project scope by both parties throughout the design process. Orana Engineering was able to integrate new sampling equipment into the existing plant whilst minimising any impact on the operation. Various challenges were overcome with the result being successful delivery of drawings for fabrication and installation of equipment, allowing improved sampling and production reconciliation whilst minimising impact to operations.

When tasked with a major repair to one of their leaching tanks, personnel at Carpentaria Gold, Ravenswood enlisted the assistance of Orana Engineering to develop a solution that would allow process operations to continue whilst leaching tank TK102 was out of service. A site visit and discussions with the client suggested a bypass line be installed around TK102. By utilising site information, Orana Engineering designers were able to detail a new bypass line through the existing processing plant area. This involved minor modification of existing structural steel and addition of pipe supports for the new HDPE bypass pipeline. Bypass piping was successfully installed during normal operation with only tie-ins needing to be installed during a single shut down.

BHPB Cannington’s Port Storage Facility operates a water polishing plant for treatment of stored water. The system requires regular maintenance for replacement of plant filtration rods, however with maintenance ports inaccessible from the ground, work platforms had to be arranged. To simplify this task and improve safety, BHPB Cannington identified the need for a permanent access platform. Orana Engineering was engaged to design a platform that allowed easy access to the maintenance port, while ensuring access to existing services was not compromised. Orana Engineering utilised AutoDesk Inventor to model a platform that would not impact on the existing structure, services or access routes while ensuring safety for maintenance workers. Following model verification, shop detail fabrication drawings were produced.