Structural Engineering Consultants

Monadelphous Group was contracted to deliver the Talinga Pipeline Compression Facility for Origin Energy’s APLNG project. Towards the end of plant construction, the Monadelphous team engaged Orana Engineering to complete structural inspections and provide Form 16 Building Certificates for structures ranging from small plant air shelters to entire compressor train buildings and associated platforms. The inspections assessed construction to the requirements of AS4100: Steel Structures and AS1657: Fixed Platforms, Walkways, Stairways & Ladders - Design, Construction & Installation. The work was completed within strict timeframes by employees from Orana Engineering’s Chinchilla Office, situated in close proximity to the site. This allowed multiple site visits to be conducted at very short notice and with minimal travel and mobilisation costs.

Eloise Copper Mine required recommissioning of their No.2 Ball Mill. During recommissioning it was identified that a means of relocating grinding media to the feed chute needed to be designed and engineered, with RPEQ certification. Orana Engineering was contacted to assist and a monorail, complete with electric hoist and trolley, was identified as being the practical solution. Challenges presented themselves while locating the monorail within the existing structure however, Orana Engineering was able work within the constraints of the existing structure to meet client requirements. All elements of the structural engineering review and design of the monorail to were taken into account. RPEQ certified fabrication and installation drawings were produced, ensuring the upgraded structure was fit for purpose.

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.

Carpentaria Gold identified that bunding around their Ravenswood cyanide storage tank was inadequate. Sodium Cyanide, used in the gold recovery process, is potentially lethal to humans and animals and detrimental to the environment. It is necessary to ensure it can be safely contained in an emergency. Orana Engineering provided an innovative solution comprising a smaller tank fitted inside the existing tank. The design minimised loss of storage capacity by providing a smaller tank for primary storage whilst maintaining the existing external tank to act as the bund. Utilising the existing tank as a bund, Orana Engineering delivered a design that met the client brief while re-using the majority of major tie-in points and providing improved access for maintenance.

During an upgrade to the concentrator at MMG’s Century Mine, Orana Engineering was engaged to design a lifting beam for installation of a new flotation cell. The lifting beam design was to provide adaptation between lifting points on the tank and the crane, providing stability during lifting and protecting the integrity of the tank. Structural considerations involved hand calculations and modelling in SPACE GASS based on client requirements and relevant Australian Standards. Orana Engineering ‘s design utilised available structural members on site, providing cost benefits to the client. Orana Engineering design staff created a 3D model in Autodesk Inventor, producing a fabrication drawing for the beam which also detailed the sling configuration for use during the lifting process.

To increase the efficiency of their concentrator, Eloise Copper Mine enlisted Orana Engineering to provide engineering and design assistance with installation of three copper concentrate scavenger cells within the existing plant. 3D models created by Orana Engineering designers were used to visually communicate solutions for new and existing equipment locations and structure arrangements. Detailing of these concept models enabled Orana Engineering to identify key tie-in locations within the plant for survey during the detailed design phase. A multidisciplinary approach during detailed design ensured improved efficiency, with brownfield engineering challenges in relocating / connecting to existing equipment successfully achieved. Upon design completion the client was provided with an installation drawing set and scope of work.

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.

MMG's Karumba Port Facility engaged Orana Engineering to design a heavy vehicle washdown facility to assist with management of concentrate for site vehicles and machinery. The time frame was short due to operational requirements, such that Orana Engineering worked from concept to IFC drawings in just seven days. The design needed to accommodate a number of different vehicles from fully laden container trailers to a 30 tonne forklift, whilst also ensuring ease of facility maintenance and capture of runoff for environmental compliance. Concept sketches were prepared, from which a detailed design was developed to meet client requirements. Through effective communication with the client Orana Engineering was able to deliver the design in a compressed timeline, to specification and budget.

Orana Engineering was engaged by MMG's Century Mine to design an upgrade within the concentrator for increased flow from a flotation cell to a tailings trough. Orana Engineering conducted a concept investigation of available options to increase the flow rate. Results were presented for a range of design and operating conditions, and a preferred option was selected for detailed design. Orana Engineering design staff created a 3D model of the new pipeline using Autodesk Inventor. The 3D model was used to produce fabrication drawings for pipe supports, new platform and new pipe bridge. Drawings also included isometric pipe spool drawings and revised P&ID drawings.

The maintenance department of Eloise Copper Mine contacted Orana Engineering with a requirement for design of an access platform for their jaw crusher, including engineering certification and drafting. The client provided site measurements and a basic concept of the design they were looking for. Being a brownfield engineering project, the design had to consider the surrounding area and existing structures to minimise modifications. Autodesk Inventor was used to create a basic 3D model of the area. Once the physical data was established the detailed design of the platform was able to be performed efficiently. Orana Engineering was able to produce both detailed shop drawings for fabrication and site installation drawings, all of which were provided with structural engineering certification.