Stichting Waternet intends to sustainably repair the effluent pipelines on the grounds of RWZI Amsterdam West. The project includes the application of needle felt relining (resinous) in five pipelines with lengths ranging from 132 m to 463 m and diameters from 900 mm to 2200 mm. Inspections and investigations will determine whether relining is suitable; if not, full replacement may be chosen. Additionally, watertightness must be guaranteed at the effluent pits, flexible transition provisions must be provided for residual settlement and thermal deformation, and discharge capacity must be maintained during construction via temporary discharge pipelines. In November 2023, it appeared that the discharge pipelines from the measuring gutter to the harbor exhibit leakage; therefore, two 250-m-long PP pipelines (Ø 2000 mm) are being added to the scope, with an extra third pipeline to ensure capacity. The tender is public and focuses on works.
Works · Open · European procedure
01What is being requested
Stichting Waternet intends to sustainably repair the effluent pipelines on the grounds of RWZI Amsterdam West. The project includes the application of needle felt relining (resinous) in five pipelines with lengths ranging from 132 m to 463 m and diameters from 900 mm to 2200 mm. Inspections and investigations will determine whether relining is suitable; if not, full replacement may be chosen. Additionally, watertightness must be guaranteed at the effluent pits, flexible transition provisions must be provided for residual settlement and thermal deformation, and discharge capacity must be maintained during construction via temporary discharge pipelines. In November 2023, it appeared that the discharge pipelines from the measuring gutter to the harbor exhibit leakage; therefore, two 250-m-long PP pipelines (Ø 2000 mm) are being added to the scope, with an extra third pipeline to ensure capacity. The tender is public and focuses on works.
The project concerns the sustainable repair of the effluent pipeline on the grounds of the RWZI Amsterdam West (AW), between the effluent pits of the secondary clarifiers and the effluent gutter. This involves two pipelines, one on the north side of the site along the railway and one on the south side along the Westpoortweg. Essentially, the work to be delivered includes: The application of needle felt relining impregnated with resin in the interior of the effluent pipelines with the following dimensions: 132 m length x 900 mm diameter, 265 m length x 1250 mm diameter, 338 m length x 1600 mm d
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
The contracting authority did not publish an estimated value — common for a large share of contracts. The EU threshold for werken is € 5,54 M, for reference.
04Likely competitors
05Legal themes that may be relevant here
06Frequently asked questions
What is the exact scope of the work for the effluent pipelines?
How is the discharge capacity guaranteed during construction?
Can the chosen renovation method still be adjusted during construction?
Which technical provisions must be realized at the effluent pits?
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