Conveyor S13 Trestles, Drive & Transfer Tower & Gallery

The Conveyor S13 Trestles, Drive & Transfer Tower & Gallery project comprised of 1200 tonne of trestles, towers and gallery steel work for the Darymple Bay Coal Terminal (DBCT), south of Mackay in Queensland.

Page Steel Fabrications’ scope of work included the detailing, supply, fabrication and protective treatment of the steel components and frames.  We were also responsible for the coordination of the final transport of the completed components to Queensland. 

Given the complex nature of this project, we engaged both internal and external drafting services.  Following extensive and rigorous drafting design coordination, the trestles and galleries were modeled, with shop drawings produced to a high level of detail.

In order to meet the Clients stringent quality requirements, a comprehensive quality control system was implemented from material supply through to protective treatment of the steel, and transport coordination.  Full material certification and traceablity was maintained for supply of all steelwork in conjunction with our suppliers.  A project requirement for testing of all welders to pass a proficiency test was successfully accomplished, with all welding executed to approved welding procedures.

Through the fabrication process we engaged visual inspection, ultrasonic examination and magnetic particle testing services to ensure all works met the required quality levels.  Our Client also provided visual examination at certain hold points.  This visual examination by both our Client and Page Steel continued on through the protective treatment applications.

Due to the oversize width and length of the frames for the gallery steelwork, the handling of these components posed some interesting challenges.  Any issues were easily overcome by the spacious layout of Page Steel Fabrications’ new purpose built workshop facility in Derrimut, which provided ample overhead cranage and in-house transportation expertise to handle these oversized components.

During fabrication two overhead cranes were utilised to rotate the frames for welding purposes.  Loading of the frames on to our semi trailers also involved dual crane lifts, with frames weighing up to 8 tonne each.  Due to the size of a number of the components, many loads required an escort vehicle to accompany the truck to the painters, which was handled internally.  For those loads requiring both single and dual certified pilots we coordinated and engaged specialist in this field.

An epoxy protective treatment to withstand a corrosive marine environment was specified for the steel work.  A visual examination after blasting and after each coating was undertaken to minimise defects and to ensure the specific minimum coating thickness acceptance criteria was accomplished.

The Conveyor S13 Trestles, Drive & Transfer Tower & Gallery was an exciting and demanding mining project successfully undertaken by Page Steel Fabrications.  Utilising our in house resources and expertise, the project was completed to a very high standard, meeting the Clients stringent quality requirements.