Method for constructing and exploiting a hydrocarbons production facility, notably on an expanse of water, and associated exploitation facility

A hydrocarbon production facility comprising:

• a support structure;
• at least one functional module having equipment including at least one hybrid cooler comprising an air-cooled cooler and a water-cooled cooler, the air-cooled cooler and the water-cooled cooler being mounted in series or in parallel, the at least one functional module being mounted on the support structure;
• a flow supply configured to supply at least one test flow to be cooled to the at least one functional module, the test flow being configured to pass through either the water cooler, through the air cooler, or through each of the water and air cooler of the hybrid cooler;
• a controller configured to control 1) the hybrid cooler, for verifying the functioning of the at least one functional module at a construction site in a technical building operably coupled to and specific to the functional module, in which the air cooler of the hybrid cooler is selectively activated to cool the at least one test flow to be cooled without activating a water cooler of the hybrid cooler, and 2) and a hydrocarbon exploitation configuration, wherein upon verification of the at least one functional module, at least one flow to be cooled passes through the water cooler and is cooled in the water cooler;
• and
• the water cooler being connected to water from a body of water to make cooling water circulate from the body of water into the water cooler or being connected to cooling water from a cooling system comprising a cooling water loop with ambient air to make cooling water circulate from the cooling system into the water cooler.