The cooling and ventilation group deals with a great number of supplies and installation contracts, as well as some service ones, in relation to the LHC project. In the course of the last years the group has increased its experience in the handling of these contracts in particular as consequence of the difficult situations sometimes faced, which have been trying but enriching.
In the first part of the presentation, the author provides a short description of the activity in progress and outlines the technical modifications which have been performed in order to migrate to the cooling and ventilation systems to the LHC definitive configuration.
In a second moment, this presentation reviews some statistics on the performance of the CV contracts and draws some conclusions from a set of key cases. These cases can be helpful in identifying possible weak points during the different project phases (engineering, tendering and contracting, installation, etc.) and can provide a basis for the discussion of potential solutions.