IHD Engineering Awards submission - Fremantle Ports
IHD Engineering Awards submission - Fremantle Ports
IHD Engineering Awards submission - Fremantle Ports
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Inner H<br />
9m<br />
11m<br />
13m<br />
14.7m<br />
Factsheet: january 2010<br />
silt screens and Air Curtain - old<br />
<strong>Fremantle</strong> <strong>Ports</strong> is installing silt screens and<br />
an air curtain at the Old <strong>Fremantle</strong> Traffic Bridge<br />
as part of the Inner Harbour Deepening project.<br />
The silt screens and the air curtain are being trialled to<br />
see how effective they are in limiting dredging plumes<br />
from extending up the Swan River.<br />
Air Curtain<br />
An air curtain (sometimes referred to as a bubble curtain)<br />
helps prevent material (such as oil, debris or sediment)<br />
spreading in the water. A current is generated by<br />
compressed air flowing through a thick walled pipe<br />
placed on the seabed.<br />
The air escapes through nozzles incorporated into the<br />
pipe and rises to the surface, forming a vertical current<br />
in the<br />
vertica<br />
which<br />
The ai<br />
section<br />
only b<br />
Harbo<br />
When<br />
traffic.<br />
at Frem<br />
The en<br />
the dr<br />
insignifi<br />
the po<br />
the im<br />
manag<br />
For one tenant, maintaining water quality in Rous Head<br />
Harbour was of paramount importance as this was the<br />
source of water for live lobster tanks. <strong>Fremantle</strong> <strong>Ports</strong><br />
deployed an air bubble curtain at the entrance to Rous Head<br />
Harbour to reduce dredge plumes. This was effective in<br />
preventing dredge plumes from reaching the tenant’s water<br />
intake pipes.