Our main references
Structural diagnosis and support in the renovation of over 400 infrastructures so far !
“This has initiated a real sense of partnership within the utility-project manager-constructor triad”
Hakim HAIKEL, Service manager
Diagnosis of the civil engineering of the WWTP at Macarez (100,000 P.E.)
Project support for rehabilitation (2M€ of work, 190K€ of project support)
The SIAV (Valenciennes) is confronted with a preponderant issue concerning the integrity of its sanitation system with the prolongation of the service life of its treatment plant at Valenciennes (100,000 P.E.). Several civil engineering infrastructures suffer from major disorders and require rehabilitation using sophisticated techniques.
To this end, the SIAV assigned Altereo the mission to conduct diagnosis studies and to carry out project support. The Altereo team of Hauts-de-France, backed up by the expertise of Denis SAVOYE, was able to produce high-quality output by carrying out project studies and preparing tender documents for enterprises, in particular the production of the technical specifications from scratch, which is very rare. The pathologies encountered were identified and addressed with technical responses guaranteeing the required additional service life of at least 20 years.
The follow-up of the execution studies and the works in progress is ongoing with an increased presence and an always relevant analysis of the vagaries of site. The work contract resulting from the studies being clear and balanced, a real partnership has been established within the utility–project manager–constructor triad ensuring the success of the rehabilitation operation.
(Français) Haut Bugey Agglomération
Sorry, this entry is only available in French.
(Français) Régie Eau d’Azur
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(Français) CU Grand Paris Seine et Oise
Sorry, this entry is only available in French.
Creusot Montceau Urban Community
2013
Simplified diagnosis of drinking water reservoirs
Field survey
Data sheet for each site
Action plan
31 reservoirs
SEURECA VEOLIA Marocco
2018
Detailed diagnosis of the civil engineering aspects and definition of technical specifications for the rehabilitation works of the SPRET
Diagnosis of the civil engineering
Effluent pre-treatment plant with a capacity of 2,500m³/h
H2S gases
Context
SEURECA, the consulting and engineering branch of Veolia, requested the service of Altereo to address a civil-engineering related issue at the SPRET (Effluent pre-treatment plant with a capacity of 2,500m³/h). The plant is located in Tangier, which has a population of one million.
The mission comprises a detailed diagnosis of the civil engineering together with the definition of technical specifications for the rehabilitation works leading to call for proposals for the performance of the plant.
Given the complexity of the subject matter, SEURECA asked Altereo to begin by carrying out a preliminary reconnaissance visit.
Project Description
This first short-term mission comprised taking into account the issue of visition the facility to meet the partners, namely AMENDIS (a subsidiary of VEOLIA), operator of all facilities within Tangier, and LPEE (Moroccan structure and material laboratory).
The degradation of the facilities is linked to very high concentrations of H2S gases (up to 300 ppm during midsummer). This gas is present in confined structures such as those of the SPRET, and is oxidized to sulfuric acid H2SO4 by chemical means but mainly by biochemical means.
On the Tangier facility, the concrete is leached and completely disintegrates under acid attack, sometimes passking through a thicknesses of more than 30 mm. Most of the epoxy resin or hydraulic binder coatings on the vertical walls of some structures have been completely destroyed and the lower reinforcement beds of the roof slabs are visible.
Eau du Morbihan
2014
Simplified diagnosis of the reservoirs of Eau de Morbihan
Compilation of existing documents
Analysis of infrastructure exposure to their environment
Verification of on-site security
Structural condition assessment
Definition and prioritisation of works
49 reservoirs
Régie Eau Azur
2016
Detailed diagnosis of concrete infrastructures
Inventory of pathologies
Investigation anomaly causes
Risk analysis against weather conditions
Quantified proposals for works/repairs
Assistance in the definition of specifications for rehabilitation works
2 reservoirs of 6,000 m³ and 3,000 m³
SIA de Valenciennes
2016
Structural diagnosis of wastewater elevating stations
Detailed visual condition assessment
Auscultation of structure
Radar measurement of concrete thickness
Action plans
84 elevating stations
SIA de Valenciennes
2014
Project management for the rehabilitation of concrete infrastructures and waste water treatment plant equipment
Complete project management: diagnosis, project definition, supervision of execution, contract management, scheduling, site coordination, client support for delivery operations
70,000 PE wastewater treatment plant (activated sludge)
SIA de Valenciennes
2014
Technical assistance for infrastructure diagnosis
Preliminary investigations
Auscultation of structures
Visual evaluation
Analytical compilation
Summary report
100,000 PE wastewater treatment plant (activated sludge)
6 infrastructures
Toulouse Metropole
2014
Project management for rehabilitation works on reservoirs, pumping stations and drinking water production plants
Complete project management: diagnosis, project definition, supervision of execution, contract management, scheduling, client support for delivery operations
37 towns
3292 km of networks
Over 700,000 inhabitants
Albi
2016
Rehabilitation of the reservoirs of Lavazière
Complete project management: diagnosis, project definition, supervision of execution, contract management, scheduling, site coordination, client support for delivery operations
2 reservoirs of 4,000 m³ and 6,000 m³
CC des Crêtes Préardennaises
2016
Diagnostic des systèmes d’adduction en eau potable
État des lieux/levés GPS des ouvrages + branchements
Campagne de mesures + modélisation
Recherche et localisation de fuites
Programme d’actions
2 SIAEP : Rocquigny et Attigny (40 communes)
50 ouvrages (réservoirs + captages)
317 km de réseau
SIAEP de la Manoise
2015
Diagnostic structurel du génie civil des ouvrages de production et de stockage d’eau potable
Plans côtés
Programmation et réalisation du diagnostic de l’ensemble des ouvrages
Préconisation de travaux
9 ouvrages
