Description of ENAP’s Scope:
ENAP’s scope was to refurbish a severely corroded conveyor at the Gibson Island site for Incitec Pivot. This conveyor returned product from the Granulation Plant back to the Product Distribution Centre, so is a critical part of the plant.
There were two 26m long, 9 tonne conveyor sections to be removed from their position 22m above ground level and transported to an on-site fabrication area to replace the corroded steelwork. Upon inspection at ground level, it was determined that one half of one section was too corroded for repairs, with a new section urgently fabricated in ENAP’s workshops and transported to site. This section was joined to the existing section on site. ENAP had a site team of six boilermakers working from two diesel welder generators for on-site structural repair work. After the structural repairs were completed, the client organised for blast and painting of the entire conveyor frames. The completed conveyors were reinstalled in position safely.
A critical part of this project was the safe removal and reinstallation of the two 9t conveyor modules. ENAP was able to complete this project safely through preparation of a Project Specific Construction Safety Plan, JSEA’s and preparation of detailed crane lift studies. The conveyor modules were lifted with a Liebherr 1350-6.1 (350T capacity) slew crane supplied by Universal Cranes supported by a 130T slew crane with dogbox to access the conveyor frame connections.
ENAP’s scope included:
- Development of lift strategy and coordination of detailed lift plan
- Preparation work on conveyor gantries to remove air lines and building cladding for conveyor frame tobe removed
- Removal of two 26m long, 9 tonne conveyor frames from installed location with 350T slew crane andtransport to site fabrication repair area
- Removal of handrail frames, FPR mesh, conveyor covers, trough and return idlers to allow structuralrefurbishment
- Structural repair to two conveyor modules, which involved replacement of approximately 3.7t of steel