Maintenance des tours de désodorisations du site Seine aval

Question: What is the contract timeline?

Context: Contract start date, end date, total duration, and any key milestones or phases mentioned. Return null if not stated.

The contract has an initial duration of 12 months, which is tacitly renewable three times, leading to a maximum total duration of 48 months. The contract's start date is effective from its date of notification.

Key milestones and phases include:

• Interventions are to be planned and executed on one tower at a time, with subsequent interventions on another tower only commencing after the partial reception of the preceding tower by the Public Person.
• The contractor is required to submit a provisional intervention and phasing schedule, including intervention and unavailability durations, as part of their technical offer.
• Upon the contract's commencement, the Public Person will issue purchase orders specifying the sequence of interventions on the towers.
• A detailed intervention and phasing schedule, proposed by the contractor, must be submitted to SIAAP for approval and is to be updated monthly if necessary.
• For Lot 1, the Public Person can request modifications to the intervention order up to 6 months before the planned start date of interventions. For Lot 2, this period is 15 days before the planned start date.
• The duration for interventions and equipment unavailability for a single tower in Lot 1 cannot exceed 1 month. This duration encompasses cleaning, ring replacement, cleaning and restoration of sprayer ramps, demister cleaning, replacement of manhole joints, tower disinfection, access closure, and waste evacuation. Exceeding this timeframe will result in penalties.
• For Lot 1, maintenance operations, specifically the cleaning of the first tower and replacement of its rings, must begin no later than 3 months after the initial purchase order is received. This timeframe includes all preliminary studies, calculation notes, prevention plans, specific constraints, and procurement lead times for materials such as Raschig rings, disinfection products, and various parts.

The core scope of work for this tender primarily involves the maintenance and disinfection of deodorization systems across various services and towers. This includes the maintenance of deodorization in Service 1 (Pretreatment, Stripping, and Building F), Service 3 (Biogaz - Fiabilisation), Service 2 (Nitrification and Traitement des Jus), and the disinfection of deodorization towers in Service 4.

A high-level summary of the Statement of Work and core deliverables includes:

• Maintenance Operations: This encompasses the dismantling, cleaning (curage, high-pressure cleaning, pumping of demisters and tower bases), and reassembly of spray ramps.
• Component Replacement: Supply and installation of Raschig rings, joints, and bolts, along with their transfer and logistical management.
• Disinfection: Preventive disinfection of installations against legionella risks and disinfection of deodorization towers.
• Waste Management: Aspiration and transport of waste with an ADR truck, and the elimination of chemical, acidic, basic, and hydrocarbon waste, including treatment in specialized centers, with the provision of a Certificat d’Acceptation Préalable (CAP) and a Bordereau de Suivi des Déchets (BSD).
• Logistics and Site Management: Operations involving handling, lifting, craning, and scaffolding for work in confined spaces and at height. This also includes the supply of access means, lighting, and ventilation, as well as the installation of site facilities such as changing rooms, sanitary facilities, and a refectory, and the setting up of site fencing.
• Reporting and Documentation: Providing water analysis reports, technical reports and documents, and a detailed account of interventions, including replaced parts and any modified technical documentation.
• Quality Control and Acceptance: Ensuring self-control of the quality of implementation and materials, leading to partial reception upon completion of services for each tower, and final admission after a trial period of two weeks or 15 times 24 hours of good operation.
• Personnel: The provision of qualified and experienced personnel, with necessary justifications, and participation in weekly operational follow-up meetings.

Tasks explicitly excluded from this market and performed by SIAAP agents include drafting prevention plans, consigning/de-consignment of equipment, requesting work availability, and draining and refilling towers with water.