The cleaning services of the accumulated liabilities for the maintenance of the main collector of the Coronmeuse quay in Liège include the following operations unless otherwise specified in the tender documents:

- obtaining all municipal and other authorizations necessary for the performance of the tasks described below, including signaling and traffic plans, coordination with tram work and others;

- the installation and removal of the signage necessary for the performance of the tasks described below;

- the execution of operations prior to cleaning: corking, water diversion, milling of deposits, etc.

- cleaning of structures: pumping and suction of sediments, removal of non-aspirable waste such as blocks, concrete, waste, gravel, compacted earth or any other material which clutters the pipeline;

- the evacuation and transport of waste resulting from the aforementioned operations to the reception and treatment center for cleaning products for sanitation structures and networks (PCRA) at the Liège-Oupeye wastewater treatment plant or any other compliant channel to the legislation in force.

The cleaning is carried out in such a way that no loose deposits, sediment or obstacles remain in the structures.

The tenderer's attention is drawn to the fact that these are interventions on works in operation in roads sometimes with high traffic density.

In addition, it is specified that the tenderer has the choice of the technique (s) used (example: high pressure water jet with recycling) to carry out the cleaning in order to ensure the cleaning of the sewer pipe. of large section.

In all cases, the proposed technique must make it possible to achieve the desired result. Optimization of the quantities of water added is an asset (award criterion).

The cleaning services of the accumulated liabilities for the maintenance of the main collector of the Coronmeuse quay in Liège include the following operations unless otherwise specified in the tender documents:

- obtaining all municipal and other authorizations necessary for the performance of the tasks described below, including signaling and traffic plans, coordination with tram work and others;

- the installation and removal of the signage necessary for the performance of the tasks described below;

- the execution of operations prior to cleaning: corking, water diversion, milling of deposits, etc.

- cleaning of structures: pumping and suction of sediments, removal of non-aspirable waste such as blocks, concrete, waste, gravel, compacted earth or any other material which clutters the pipeline;

- the evacuation and transport of waste resulting from the aforementioned operations to the reception and treatment center for cleaning products for sanitation structures and networks (PCRA) at the Liège-Oupeye wastewater treatment plant or any other compliant channel to the legislation in force.

The cleaning is carried out in such a way that no loose deposits, sediment or obstacles remain in the structures.

The tenderer's attention is drawn to the fact that these are interventions on works in operation in roads sometimes with high traffic density.

In addition, it is specified that the tenderer has the choice of the technique (s) used (example: high pressure water jet with recycling) to carry out the cleaning in order to ensure the cleaning of the sewer pipe. of large section.

In all cases, the proposed technique must make it possible to achieve the desired result. Optimization of the quantities of water added is an asset (award criterion).