The scope of the assignment is the replacement of frequency converters (FO's) at various locations, which are dated and have now been declared "obsolete". The number of FOs to be replaced at the sites concerns:

- Purification station De Laak: 25 frequency converters

- Purification station De Steeg: 27 frequency converters

- Schuwacht treatment station: 1 frequency converter

- Distribution pumping station Alblasserdam: 4 frequency converters

- Supplementation pump station Gouda: 3 frequency converters

The scope of the assignment is the replacement of frequency converters (FO's) at various locations, which are dated and have now been declared "obsolete". The number of FOs to be replaced at the locations can be found in the quotation guide.