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PPG Malaysia arrange critical heavy lifts |
 For the Songkhla Power Plant Project, PPG Member in Malaysia, Megalift Sdn. Bhd., was responsible for handling critical and heavy units which consisted of Gas Turbine Generators, Steam Turbine Generator, Gas turbines and Steam Turbines (6 units in total). Their scope of work was to receive the heavy units onto barge; barging arrangements from port of discharge to a private jetty; roll off the heavy units from barge; temporary storage at private jetty; delivery to Songkhla Power Plant site (located some 35km away from jetty); and finally offloading and installation onto foundation (for gas turbine generator units).
The 3 generator units, each weighing 318 tonnes, were first delivered to Thailand via ocean vessel M/V “Wiebke” and discharged at Songkhla Port using vessel’s own derrick crane directly onto barge positioned alongside the vessel. After receiving and sea fastening, the barge proceeded to a private jetty (MPP Jetty) located about 5km away from the port. At MPP jetty, a Ro-Ro operation was performed to discharge the generator units. Megalift’s Goldhofer hydraulic multi-axle trailer with a configuration of 12 axle x 4 files (24 axles in total) was used for the operation. Once discharged from barge, the generator units were jacked down onto stools for temporary storage at MPP jetty pending final delivery instruction by client. For the turbine units which consisted of 2 Gas turbines, each weighing 310 tonnes, and 1 Steam Turbine unit, weighing 140 tonnes, they were delivered to Thailand via ocean vessel M/V “Pangani” and discharged at Songkhla Port using the vessel’s own derrick crane directly onto barge positioned alongside ocean vessel. After receiving and sea fastening, the barge proceeded to the MPP jetty for discharging using Ro-Ro method. Megalift’s Goldhofer hydraulic multi-axle trailer with configuration of 12 axle x 4 files (24 axles in total) were used for the operation of the Gas Turbines while the Steam turbine was rolled off using a 12 axles x 2 files. For off-loading of the gas turbines at MPP jetty for temporary storage, Megalift’s hydraulic gantry lifting systems with a capacity of 800 tonnes were used. For delivery to site, the same hydraulic trailer configurations were used to load and deliver the cargoes. Transportation was done during night time with army escorts and traveling a distance of about 35km. Transportation took about 7-8 hours with traveling speed of about 5km/h. Upon arrival at site, the cargo was offloaded using in-site overhead crane system to their respective foundations except for the gas turbine generators. The gas turbine generators were offloaded by means of jacking and skidding method. The hydraulic trailer was parked in front of the generator foundation and the generator unit was jacked up on trailer to foundation height of about 2m and finally skidded to foundation using hydraulic dragon skidding system. Then it was aligned and jacked down onto its respective foundation. The heavy units were delivered unit by unit continuously and took about 1 month to complete including installation works. Megalift was also given the responsibility of assembly and skidding to foundation of 2 units Condenser weighing 207 tonnes each and also skidding to foundation of 1 unit Transformer weighing 190 tonnes at Songkhla Power Plant site.
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