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Bell Bay Breasting Dolphin

ClientRio Tinto
Value$860,000
StateTasmania
Completed2011

Rio Tinto Wharf is used to unload alumina powder, with a single point unloading powder, with a single point unloading system (grab and hopper), that requires frequent shop warping movements alongside with the wharf during unloading. A wharf upgrade and new breasting dolphin where required to increase the capacity of the wharf for larger vessels.

The Project

VEC were successful in tendering to construct the new breasting dolphin and other associated works such as:

  • Supply and installation of raked piles;
  • Supply and installation of a reinforced concrete pile cap;
  • Supply and installation of a new fender unit; and
  • Supply and installation of wharf furniture such as access
  • ladders and handrails.

VEC proposed to use the Tasports barge for piling and crainage, however the capacity of the barge and frame was insufficient for handling the size and mass of the required piles and pre-cast components.

VEC identified that the barge could be upgraded to suite the task and engaged the services of a Navel Architect to assist re-engineering the barge to increase the capacity from 20t to 26t.

VEC also assessed the pile frame structure, winches, pin connections and rear screw-drive mechanisms and undertook in-house design to upgrade the equipment to the required capability. This was proof checked and approved by the vessels’ owners prior to VEC tradesmen making the modification on-site.

The structural steel works and pile splicing were undertaken by VEC on site at the Bell Bay Wharf. Local firms were engaged to apply the protective coatings. Pre-cast concrete components were manufactured at the Ulverstone precasting yard and transported by road to Bell Bay.

To minimise the duration of the contract, the VEC site foreman liaised regularly with the shipping co-ordinator to monitor shipping movements and adjust day to day or week to week construction activities to accommodate shipping and tides.

The works were completed in accordance with both Tasports and Rio Tinto safety and environmental requirements and without any notable incidents or delays.

Head Office

10b Industrial Dr, Ulverstone,
TAS 7315

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Hobart Office

Level 3, 116 Bathurst Street
Hobart, TAS 7000

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Melbourne Office

Level 10, 567 Collins Street, 
Melbourne, VIC 3000

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 (03) 9278 5100
Fax +61 3 6425 6112

Queensland Office

135 Coronation Drive
Milton, QLD 4064

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112