Our Customers

Case Studies

  • Temasek Tower

    Temasek Tower, is the sixth tallest skyscraper in Singapore, with a height of 235 metres and currently the tallest cylindrical building in the world. Built in 1986 as Treasury Building, it has 52 stories and is one of the prominent buildings in the business district. The structure consists of steel beams cantilevered from a cylindrical concrete core. This allows full 360° views at the perimeter, unobstructed by perimeter columns.

    Yorkool had been awarded the contract to upgrade the entire ACMV System including replacement of chillers, water pumps, cooling towers, electrical switchboards and associated works for Temasek Tower.

    Temasek Tower

    At the time of upgrading, some of the major tenants in the building include government agencies, global MNCs, financial institutions, regional HQ such as LTA, CapitaLand Residential, CapitaLand ILEC, Commerzbank Aktiengesellschaft, Bain & Company, Inc, Advertisement Agency BBDO. There were also data centres running 24 x 7 within Temasek Tower itself.

    Our Project Manager worked directly with the owner to understand the scope of the work as well as the major risks and concerns before putting together a detailed project plan on installation timeline, equipment delivery, equipment hoisting, installation and replacement work, and commission of the new system. The entire project had to be executed with almost zero down-time to Temasek tower. To minimize downtime to the client, most of the upgrading works were carried out at night or over the weekends.

    Working in an existing building, we took great care to project customer's existing premise by overlaying the upgrading site with plastic covers and wooden planks.

    Flooring Protection
    Flooring Protection

    As the Engine Room is located at sixth floor, we had to dismantle a front window façade to allow the water pumps and big equipments to be hoisted directly onto the sixth level using a crane. The entire operation had to be undertaken at night as the building is located at one of the busiest part of the Centre Business District.

    We hoisted the mega-huge cooler tower up 52-storey through the cargo lift shaft over the weekend when the lift was "disabled" for the hoisting work. From the 52nd storey, the tower was "hand-carried" onto the roof top.

    Façade Dismantled for Chiller Hoisting
    Façade Dismantled for Chiller Hoisting

    Road Closure and Crane Preparation for Hoisting of Chiller
    Road Closure and Crane Preparation for Hoisting of Chiller

    During the installation phase, the old ACMV system had to be partially shut down in phase over the several weekends in order to facilitate pipe freezing and tearing out of the old equipment. During the upgrading, make-shift portable air-con system had to be put into the data-centres to provide the necessary cooling for the data-centres that are running 24x7.

    Temporary Air-con for Server Room
    Temporary Air-con for Server Room

    The entire operation was completed within the requested timeframe of five months with majority of the work undertaken over four weekends when the engine room could be shut down. Our customer was very pleased with our execution capability to replace the entire ACMV System with minimum disruption to their existing tenants.

  • Harbourfront Centre

    HarbourFront Centre (formerly known as Word Trade Centre) was built close to the southern-most point of the main island of Singapore. Its location in the sheltered waters of Keppel Harbour helped the area to thrive as a commercial area. With the closure of the shipyard, and massive redevelopment of the area into a cruising hub, the name was changed to HarbourFront in 2000. Today, HarbourFront Centre comprises office, retail space, F&B facilities and an international cruise centre. A retail podium occupies the first three levels of the building. It houses a comprehensive array of fashion shops, pharmacies, banks, restaurants, a food court, supermarket, a clinic and a post office, providing convenient shopping for office tenants at the HarbourFront Offices.

    Yorkool had been awarded the contract to upgrade the entire ACMV System of Harbourfront Centre including replacement of chillers, water pumps, cooling towers, electrical switchboards, building management system and associated works. The work was driven by the need of HarbourFront to upgrade its old plant room as well as increase the Efficiency of the ACMV System.

    At the time of the upgrading in 2008, Harbourfront Centre was a 31 year old building with its ACMV System running at a low efficiency level of 1.1kW/tonnage. The high cost of the energy bill made it expensive to continue operating the Centre.

    Harbourfront Centre

    The key challenge in the upgrading work was converting the Chiller System from a Series into a Parallel System. Concurrently, 2 of the chillers located at Level 13 had to be relocated to the Central Plant Room at Level 1. The retrofitting work required temporary piping re-routing, chiller by chiller replacement, and step-by-step migration from a Series to a Parallel Chiller System while the building air-con system was still operating. Our Project Engineering Team had to study the design, site constraint, piping route, migration plan, timing of retrofitting, etc. and put together a detailed project plan on installation timeline, equipment delivery schedule, road closure permit, equipment hoisting, staggered job shift with our sub-contractors. The retrofitting work was done with minimal impact and downtime to HarbourFront Centre. The complex upgrading work of the Chiller Plant Room was completed within 9 months.

    The Retrofitting work achieved the desired outcome of :-

    • Energy Saving of 30%
    • Minimum disruption to existing tenants
    • Potential increase in GFA by freeing up plant room at Level 13