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.
Works · Open · European procedure
01What is being requested
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.
The project concerns the sustainable repair of the effluent pipe on the premises of the RWZI Amsterdam West (AW), between the effluent pits of the secondary clarifiers and the effluent gutter. This involves two pipes, one on the north side of the site along the railway and one on the south side along the Westpoortweg. Regularly, the work to be delivered includes: The application of needle felt relining impregnated with resin in the interior of the effluent pipes with the following dimensions: 132 m length x 900 mm diameter 265 m length x 1250 mm diameter 338 m length x 1600 mm diameter
02Exclusion grounds
- No specific exclusion grounds were extracted. In a European tender, the mandatory and discretionary grounds of art. 2.86/2.87 of the Dutch Procurement Act almost always apply — check the European Single Procurement Document (ESPD).
03Value in context
04Likely competitors
05Legal themes that may be relevant here
06Frequently asked questions
What is the exact scope of work for the effluent pipes?
What additional work is included for the discharge pipes towards the harbor?
Has the chosen renovation method been definitively established?
How is the discharge capacity guaranteed during the execution of the project?
Automatically compiled from the official tender data and documents.
07Estimated value versus the market
€ 1,4 mln
€ 3,6 mln
€ 9,1 mln
Gegunde waarden in CPV 45 · werken n=3159