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Customer: Public Utility Board (PUB) Contract: Construct Only & Remeasure Location: Tuas View Basin, Singapore   |
Fast Facts
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We're delivering Contract C1A, part of Singapore's Deep Tunnel Sewage System Phase 2 project.
Contract C1A, involves site establishment works, and all temporary and permanent above and below ground services and utilities for the new Tuas Water Reclamation Plant (TWRP). Located in the south west corner of the island, TWRP will receive both industrial and domestic wastewater.
The most challenging aspect of the project has been the six, 3 m diameter pipejack drives, totalling 1.2 km, and ranging from 71 m to 434 m in length.
The TBM machine has contended with high groundwater pressure (equivalent to 30 m deep diving) and was set up for hyperbaric interventions for cutting tool replacement. The TBM has also negotiated a tight 420 m radius curve - sharp for a pipejacked tunnel. The pipejacking works also required six, 30 m deep permanent manholes
Other elements of our work scope include:
- all site access and control infrastructure
- 22 kV substation and a temporary power network for the whole site
- temporary sewer and potable water lines
- temporary drainage
- temporary roads
- client site office, site wide street lighting, CCTV and WiFi systems
- extensive coastal revetment and protection
- permanent roads and drains
- 5 km of DICL pipes ranging from 200 mm dia. to 1.6 m dia. pipes
- 1.2 km of 3 m dia. RC pipes
- electrical & ICA duct banks and manholes
- 100 m long near-shore outfall structure
