[VIDEO] Sarens installs module in heavy-lift feat
Belgian heavy-lift specialist, Sarens, has completed another operation at a 1266 MW combined cycle power plant in Khenchela, Algeria, on behalf of Etterkib, a Sonelgaz Group company.
Sarens said on Tuesday, it has completed the installation of a 220-tonne boiler module at the facility.The operation involved a Demag CC2800-1, Demag CC2400-1 and Demag AC259 cranes. The equipment was selected to handle the significant weight of the 220-tonne, 37-metre long module, and to accommodate the need for rotating movements and verticalisation. The CC2800-1 crane was transported to the work site directly from another project, and it took a total of three days to set up the equipment.
The heavy-lift feat
When the boiler modules were unloaded from the transport trailer, they were loaded immediately into the verticalisation frame. This specially designed tool, known as the strongback, allows the boiler modules to be reorientated as required for their function in the power plant. The strongback gives the required stability to the structure and enables the cranes to position the load, however it needs to be removed before the modules can be installed.
The lift is unique in that the roles of the cranes change mid-lift. Two cranes, the CC22800-1 acting as the main crane and the CC2400-1 acting as the tailing crane, start lifting the module and frame, weighing a total 220t. After completing the verticalisation movement, a third support crane is connected to the strongback and the main crane continues to lift the boiler module to remove it from the frame. The main crane turns the module to its final orientation and is connected to the superlift ballast. It can then boom down until the final install position is reached.
The tailing crane stays connected to the strongback throughout the operation and once the boiler module has been installed, assisted by the support crane, it turns the strongback back into the horizontal orientation and returns it to its initial position on the ground, ready for the next module.
Below you can view the video of the operation.