Supply Chain Notice: WAT0122-02 - 3 Basin Level Management System (via 9 Dock)

Tender description

The Tenderer should be aware that the works detailed in this package are constrained due to the nature of the location they are to be conducted in. Project Background 3 Basin is essential infrastructure to PNB. It contains many berths and docks that harbour naval vessels for upkeep and storage. A solution is required to maintain the operational level of the basin between the set parameters. Currently, the basin is seeing abnormal amounts of leakage through various points throughout its boundaries and as such there is a need to replenish this water. This is currently done by opening up 3 basin to the harbour on sufficient high tides, at great expense in terms on labour, and wear on existing aged infrastructure.The system implicated in the notice will be set up at the head of 9 dock and draw water from there (tidal waters) and discharge into 3 Basin at the nearest convenience. This will be going over a main road way, and as such, any pipes, cables etc will need to be ramped over significantly to allow for current traffic to pass over. Any solution that is designed will need to comply with any environmental regulations due to being placed in/above/around tidal waters. The total discharge capacity of the pumps shall be no less than 1800m3/hr. The solution shall also incorporate a system whereby the level in 3 Basin is monitored and the pumps controlled accordingly. Please see picture attached (fig 1) with orange arrow for proposed location (although not explicit if designs vary) and where the water needs to be moved from and to with the blue arrow. The task will be for a fully managed system including equipment to pump the water, fabricated structure to mount the pump(s) include a ramped roadway for any pipework or wiring and fully integrated into the electrical network with a control panel. This will also include maintenance regime according to manufacturers guidance for at least 1 year post installation and a planned proposal for another 2 years minimum with fees.