CLIENT: Shell Australia
LOCATION: Cocos Islands
SIZE: 4,000 m2
MATERIAL: 2.0mm HDPE
JAYLON BRIEF: To supply and install approximately 4,000 m2 of 2.0mm HDPE to Shell’s fuel storage facility on Cocos Island.

Cocos Islands is an example of a remote island project requiring a rapid installation to overcome tropical weather patterns. Due to the number of pipe penetrations and fixtures, welding the material in the required timeframe provided a challenge for Jaylon. After materials and equipment had been shipped, Jaylon mobilised a supervisor and installation crew to the islands. The project was completed in the timeframe available enabling our client to meet its deadline with other subcontractors.

---

CLIENT: Halkitis Bros. Earthmoving
LOCATION: Bathurst Island, Northern Territory
SIZE: 2,500 m2
MATERIAL: 0.75mm Polypropylene
JAYLON BRIEF: To line two sewerage ponds on a remote island with a minimum crew.

Bathurst Island is situated approximately 100kms north of Darwin and is serviced either by a weekly barge service from Darwin or by charter flights. To minimise the installation time, Jaylon prefabricated each liner in its Malaga factory thereby reducing the on-site welding requirements.

Jaylon mobilised a supervisor and welder to supervise the installation, seal the pipe penetrations and extrusion weld the liner to a polypropylene locking strip around the perimeter of one of the dams.

The client’s existing site labour assisted in deploying the panels which required a total of six men for approximately one hour per liner.

---

CLIENT: South Australian Water Corporation (SA Water)
LOCATION: Knotts Hill Reservoir — Port Lincoln SA
SIZE: 11,000m2
JAYLON BRIEF: Install floating covers to improve water quality and reduce evaporation

The Knotts Hill Reservoir is an integral part of SA Water’s supply of water to residents located on the Eyre Peninsular in South Australia.

As part of its commitment to upgrade rural water supplies in South Australia, SA Water has instigated a program to install floating covers on its reservoirs to improve water quality and reduce evaporation.

Floating covers are designed to remain taunt irrespective of the dam water level, which is best achieved by a series of floats and weights that accommodates the excess cover material that forms as the dam fills. Conversely, as the dam empties, extra cover material is required as the surface area of the dam increases.

As reservoirs are normally rectangular or square, the geometry of the Knotts Hill Reservoir presented a unique challenge for Jaylon to ensure the cover remained wrinkle free and stormwater ran into the specifically designed sumps and not pool on top of the cover.

Jaylon was able to achieve a functional and aesthetically pleasing cover for its’ client using 1.1mm reinforced membrane which has high tensile strength despite its flexibility. The membrane is a fawn / black laminate with the light coloured fawn reflecting the heat, whilst the black underside prevents light from entering the reservoir.

The construction of the perimeter road and concrete retaining wall was also supervised by Jaylon.