Balanced Engineering & Construction (BEC) recently conducted an on-site technical review at the Tuas Power Station with senior leadership from Huaneng Power International, parent company of Tuas Power.
The site discussion focused on the progress of the ongoing stack demolition works, with particular attention to demolition methodology, sequencing, and safety controls required to execute works within a fully operational power facility.
Project Overview
The Tuas Demolition Project involves the controlled, top-down demolition of a 155-metre reinforced concrete chimney housing two internal steel flues, located at the centre of the live Tuas Power Station.
Given the operational nature of the surrounding plant, the works require a zero-vibration, low-dust demolition approach, ensuring that adjacent assets, utilities, and operations remain protected throughout the demolition process.
Demolition Methodology and Safety Controls
The demolition works are being executed using precision diamond-tipped wall saw cutting combined with sequenced lift-down removal techniques. This approach allows for:
- Controlled load transfer during dismantling
- Predictable and stable removal at height
- Minimal vibration impact on surrounding structures
- Effective dust control within an operating facility
All activities are carefully sequenced and coordinated with plant operations to maintain strict safety standards and operational continuity at every stage of the works.
Why Controlled Demolition in Live Power Facilities Is Complex
For asset owners and operators managing ageing infrastructure, demolition of tall industrial structures within live facilities represents one of the most technically sensitive phases of the asset lifecycle.
Key challenges include:
- Protecting adjacent operational assets
- Eliminating vibration-induced risk
- Managing works within constrained footprints
- Maintaining safety in high-risk vertical environments
Successful execution depends on disciplined engineering, proven methodologies, and experienced site teams capable of managing risk proactively.
Project Highlights
- Chimney Height: 155 metres
- Base Diameter: 20.4 metres
- Top Diameter: 17.8 metres
- Concrete Volume: Approximately 3,000 m³
- Method: Diamond-tipped wall saw cutting with controlled lift-down removal
Answering Common Questions
What is controlled demolition in an operating power station?
Controlled demolition in an operating power station involves dismantling structures using precision cutting and sequenced removal methods that minimise vibration, dust, and risk to surrounding operational assets.
Why is zero-vibration demolition important?
Zero-vibration methods protect adjacent plant, foundations, and sensitive equipment, reducing the risk of disruption or damage within a live facility.
What methods are used to demolish tall industrial chimneys?
Tall chimneys are typically dismantled using diamond saw-cutting and controlled lift-down techniques to ensure predictable, stable removal at height.
Planning demolition or modification works within a live industrial or power facility? Our team is available to discuss methodology, risk management, and execution planning for complex vertical structures.