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22 January 2009

Mott MacDonald assists on Singapore water utilities project

Mott MacDonald is currently helping the Public Utilities Board (PUB) of Singapore to rehabilitate, construct and investigate several sewer pumping mains in south west Singapore.

Mott MacDonald’s project team is providing technical advisory services* to the Public Utilities Board for the project through to completion at the end of 2010. This will involve assessing existing pump mains and pipes laid up to 30 years ago. To help with the rehabilitation of the existing infrastructure, the project team will look at the best methods and technologies to use in accordance with the PUB's requirements.

Soon Won Moi, Mott MacDonald’s project manager explained, “We are looking at using High Density Polyethylene (HDPE) to reline and strengthen the piping which it is hoped will extend the life span of the pumping mains for another 50 years. For the investigation work we are using non-destructive methods such as CCTV and direct measurement on the surface of the mains by ultrasonic testing to minimise impact on the mains. For the construction of a new pump main within the Port of Singapore (PSA) vicinity, we will use a pipe-jacking method to minimise the impact on the PSA operation as well as the existing operating pump main.”

Fook Hin You, Mott MacDonald’s Singapore director said, “We are delighted to be selected by the Public Utilities Board of Singapore for this important rehabilitation project. Mott MacDonald has world class water and environment engineering expertise as well as local knowledge and we look forward to helping deliver a system that will help meet the population of Singapore’s needs for years to come.”


Editors notes

* Mott MacDonald’s role in more detail
The project includes rehabilitation of approximately 2.2km of existing pumping mains, ranging in diameter from 150mm to 950mm for Corporation, International, Jalan Bahar and Pulau Samulun pumping stations; the construction of approximately 0.30km of 300mm diameter pumping main for Mount Palmer Pumping Station within the Port of Singapore (PSA) vicinity, as well as the investigation of around 1.8km of existing ferrous pumping mains ranging from 610mm to 950mm for Corporation, International, Ayer Rajah, Jalan Bahar and Jurong West pumping stations to determine the current structural condition.
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