Firm tranche: inventory (technical part no. 1), feasibility of the project (technical part no. 2), pre-program and assessment of the need (technical part no. 3) Optional tranche 1: writing of the program (technical part no. 4) Optional tranche 2: choice of the holder of the project management contract (technical part no. 5) Optional tranche 3: follow-up of studies up to the preliminary draft Final (DPA) (technical part no. 6)

Tranche contract: Firm tranche: inventory (technical part No. 1), feasibility of the project (technical part No. 2), pre-program and assessment of the need (technical part No. 3)Optional tranche 1: Writing of the program (technical part No. 4)Optional tranche 2: Choice of the holder of the project management contract (technical part No. 5)Optional tranche 3: follow-up of studies up to the preliminary draft Final (DPA) (technical part No. 6)