The contract was awarded to MYC Engineering, as the main contractor. Retrofitted 3 x large-scale Flue Gas Desulphurization (FGD) plants to the two existing 350MW coal-fired generating Units L4 & L5 and one existing 250MW coal-fired generating Unit L2 in Lamma power plants for reducing sulphur dioxide (SO2) emission which were in support of the Government’s policy objective to improve the air quality of the Pearl River Delta.
Scope of Works:
- Steel fabrication, field erection of structural steelwork and flue gas ducts;
- E&M, piping systems and equipment installation works;
- Inspection, testing, commissioning, performance tests of these FGD plants and associated common facilities.
Adopted an innovative “top-down” construction method to build the steel absorber/scrubber of 12.5m in diameter and over 30m height in order to solve the extremely congested site constraint, which was among the most congested power plants in terms of space in the Asia Pacific.
In addition, it was well executed in heavy lifting with a combination of using a tower crane together with a deployment of a 500-tonne mobile hydraulic crane for lifting the major components (eg, over 22 tonne) of the Gas-Gas- Heater over 55 meters to the top of each absorber. This was carried out one-by-one over an operating power generation unit in Lamma Island.