BULK LIQUIDS BERTH & BROTHERSON DOCK, PORT BOTANY NSW
In 2005, Sydney Ports Corporation awarded Marine & Civil Maintenance a contract to carry out extensive repairsand maintenance work on the Bulk Liquids Berth at Port Botany. The scope of work included 80m2 of concrete repairs to the approach jetty and wharf head, temporary propping of the roadway and repairs to the concrete headstocks and prestressed beams, repairs to steel pile jackets, and installation of new SCN 1000 E1 fenders, including the installation of 36mm anchor bolts.
The Berth is dedicated to the handling of bulk liquids and compressed gases, many of them highly volatile, and it was an essential part of the contract that no hot work be carried out when a ship was in berth. As the facility is very busy, it was vital to structure and plan the work so that it could be done with the least amount of hot work and downtime. The concrete removal was carried out by hydrodemolition, using high-pressure water, and the reinstatement was done with dry-sprayed gunite and hand-applied mortars.
In 2007, the Corporation awarded MCM further contracts for repairs and maintenance to the container facilities at Brotherson Dock. The scope of work, all of which had to be carried out around active shipping, included structural concrete repairs; replacement of timber fenders, corroded steel ladders and struts; replacement of corroded structural steelwork at the Emergency Response Jetty; grit blasting and coating of the jetty steelwork and part of the sheet piled seawall, sacrificial cathodic protection of the underwater part of the sheet piles; and protectively wrapping the jetty piles.
Contracts were also carried out at the Bulk Liquids Berth in 2007 to repair the concrete soffit of the southern mooring dolphin and the seawall capping beam, and repair various pile jackets.