Tuas Nexus Integrated Waste Management Facility (IWMF)

When completed the Integrated Waste Management Facility (IWMF) is an integral component of realising Singapore’s vision towards a zero-waste nation. Equipped with cutting-edge technologies, the facility aims to improve energy and resource recovery from waste.

Location

Singapore

Client

EPC Consortium of Keppel Seghers, China Harbour Engineering & Construction and Singapore Technologies Engineering

Artist impression of NEA’s Integrated Waste Management Facility (IWMF) Waste-to-Energy Facility which also houses a Materials Recovery Facility. | Source: NEA

WSP Singapore has been entrusted by the engineering, procurement, and construction (EPC) contractor for IWMF Phase 1 (Waste-to-Energy and Materials Recovery Facility) being a consortium of Keppel Seghers, China Harbour Engineering and ST Engineering Marine (KCS Consortium) to deliver the overall design management and interface coordination of various crucial aspects, including the process plant, electrical systems, civil and structural design, building services, and interfaces with PUB’s Tuas Water Reclamation Plant. Embracing state-of-the-art technologies, the facility will incorporate advanced waste thermal processing, a wet flue gas scrubbing system, and power generation to ensure optimal efficiency and adherence to stringent emission standards.

Innovative Ventilation System Design to Ensure Fresh and Clean Air

A robust ventilation system is essential for a waste management facility. To complement natural ventilation, our innovative design incorporates HVAC systems to maintain cool and circulating air throughout the facility. Additionally, the architectural and process design elements have been meticulously coordinated to uphold the required standards of temperature and comfort. Through CFD simulation, our ventilation design ensures negative pressure within the facility, preventing the escape of odour and enhancing overall air quality.

Environmental Considerations at the Forefront

Environmental sustainability is a cornerstone of our design approach. We conducted a comprehensive environmental impact assessment to address various aspects, including air quality, noise levels, water management, and biodiversity preservation. To mitigate pollution, the facility features exhaust filtering and scrubbing systems, while noise mitigation measures have been integrated into the design of process plant components. Closed pipe systems and stringent design measures minimise the risk of leakages, ensuring compliance with local fire codes. Furthermore, the facility is designed to achieve Green Mark Platinum rating, incorporating features such as rooftop solar PV generation to enhance sustainability.

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How the two facilities of Tuas Nexus work to contribute towards Singapore's sustainability goals | Source: NEA

Performance-Based Fire Protection Engineering

Adopting a performance-based fire safety engineering approach approved by the Singapore Civil Defence Force, our team has successfully implemented proven methodologies and validated software to analyse and simulate various fire scenarios. This ensures strict compliance with fire safety regulations, particularly crucial given the presence of large process equipment such as boilers, incinerators, and furnaces. Extensive assessments have been conducted to guarantee structural stability in the event of a fire, demonstrating our commitment to safety and resilience.

WSP's Expertise in Waste-to-Energy Solutions

Our deep involvement in the IWMF project underscores our capabilities in waste-to-energy solutions. Leveraging our extensive expertise, we have optimised construction efficiency and operational effectiveness, contributing significantly to the success of the project. As the IWMF Phase 1 nears completion in 2026, it represents a significant milestone in Singapore's waste management journey, showcasing our collective commitment to sustainability and innovation.

Strengthening Partnerships and Delivering Excellence

With the active collaboration and commitment between the project teams, the facility is delivered with outcomes and solutions that aligns with the client’s expectations. WSP also has been recognised as the client’s strategic partner and has been engaged in continuous dialogues with the client to participate in upcoming bids in Singapore and the region.