GIA contributes to long Malaysian water tunnel - TunnelTalk
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Record order for GIA on Malaysian water project Feb 2011
GIA News Release

GIA workers mobilize company equipment for the project

Sweden's GIA Industries has started deliveries and installation of its record order for locomotives and ventilation fans and ducting on the 44.6km Pahang Selangor Raw Water Tunnel in Malaysia. The order for nine D10 locomotives, six AVH90 Swedvent fans and 36,000m x 1600mm diameter ducting was placed through its local dealer JetCan and is the company's largest order for a single tunnel project in Asia.
Forming a key element of the Pahang Selangor Water Transfer project, the tunnel will be the longest and biggest in South East Asia and the sixth biggest in the world.
It has been designed to transfer water from Pahang to meet future water supply shortfalls in the Selangor/Kuala Lumpur region for domestic and industrial users.
Once completed in 2014 by the main joint venture contractors, comprising Japan's Shimizu Corporation and Nishimatsu Corporation plus local companies IJM and UEM Builders Bhd, the scheme will pump 1890 million litres of water daily at a discharge rate of 27.6m3/s.

Malaysia's long raw water tunnel scheme

Raw water will be transferred through the 44.6km x 5.2m diameter tunnel with gravity flow to the water treatment plant.
The tunnel will be excavated by three Robbins TBMs for more than 35km of the near 45km length and by conventional NATM at the portals. Construction will also include four adits.
The GIA equipment is being distributed at three different locations supporting the excavation and tunnelling works.
The Sweden ventilation fans and ducting system is being installed to convey fresh air into the tunnel and ventilate the air back outside the tunnel. The fans are built in a rugged anti-corrosion treated design to withstand aggressive environments.
GIA's Swedvent ducting is fabricated in flexible, pre-coated polyester fabric in lengths of 10m up to 200m to ensure a pliable, easy to handle duct with a relatively low weight and high durability.

AVH90 Swedvent ventilation fans

According to Jet Wee Ong, the Managing Director of JetCan, the flexibility of the diesel locomotives' design, including lowering the overall height, was a key factor in winning the order. "It allowed the locomotives to function at an optimum level even under the constricted construction conditions of the underground," said Ong.
The nine GIA D10 diesel locomotives will be used to convey materials and workers in to the tunnel. Designed for tunnelling and mining applications, the 10 tonne class locomotives offer high productivity, a high traction force and a top speed of 20km/h.
Throughout the 25-month construction period, JetCan will provide a full on-site maintenance and back-up service for the GIA equipment.
References
Malaysian raw water tunnel awarded - TunnelTalk, May 2009
Robbins launch on Malaysia's mega water project - TunnelTalk, Feb 2011
Improved ventilation system from GIA Industries - TunnelTalk, Jul 2010

           

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