Effluent Pipe RWZI
Stichting Waternet has launched an open tender for the sustainable repair of the effluent pipes on the premises of the RWZI Amsterdam West. The project includes the application of needle felt relining in two pipes on the north and south sides of the site, with lengths ranging from 132 m to 463 m and diameters from 900 mm to 2200 mm. Additionally, inspections and investigations must be carried out to determine defects; if relining proves unsuitable, alternative solutions such as full replacement may be employed. The relining must be finished watertight and provided with flexible transition facilities to accommodate residual settlement differences and thermal deformations. Temporary discharge pipes must be installed and removed to maintain the required capacity. In November 2023, it appeared that the discharge pipes from the measuring gutter to the harbor exhibit leakage; therefore, two PP pipes (Ø 2000 mm, approx. 250 m) have been added to the scope, including a third pipe to guarantee capacity. The construction team phase involves joint research and the selection of the most suitable renovation method.