BHPB RGP3 MARINE (DOLPHINS)
BHPB/MPD Joint Venture
Port Hedland, WA
Aug 06 – Nov 07
The Major Projects Group (CMA Corp) part of the scope for this BHP Billiton Iron Ore project was to remove all structures, concrete berthing and mooring dolphins, and the supporting piles from the Berth C Iron Ore Load out Facility in Port Hedland.
The concrete berthing dolphins are large concrete structures supported by steel piles that berthing ships rest against when being loaded with iron ore. The mooring dolphins are similar but used solely for the mooring lines which hold the berthed vessel in place. The ore loader structure is a steel structure that is supported on piles and head stocks. This structure supports the travelling ore loader that moves along the entire structure on rails.
All demolition during this project was conducted on or around water, with the majority of the works being completed from barges.
Heavy equipment such as a 160 tonne and two 35 tonne excavators, fitted with hammer, ripper and grapple attachments, and a heavy lift barge, were used for the removal of structural steel as well as the concrete dolphin structures and pile removal.
The first stage of the loader structure removal comprised half of the loader run way structure and was completed in October 2006. The second stage of the steel structure removal began in January 2007 and was completed by end of March 2007. Transfer conveyors and feeder platforms were removed after stage 1 of the steel removal.
The project was completed with zero lost time injuries.
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