Operation and maintenance in the cooling and ventilation group

A core team of CERN staff is running the daily operations of the cooling and ventilation equipment at CERN, thus assuring multiple interfaces such as constant contact with the users of existing installations, the project leaders for new installations and intern-divisional communication. As support of this team, re-tendered contracts with external companies for the maintenance and operational tasks have been put into place multiple years ago. Higherlevel maintenance continues to be entrusted to the equipments’ constructor. The new taskand result-oriented contract E071/ST for maintenance and operation started on January 1st 2003 is briefly described. Tools for running the contract and responsibility limits on both sides of the contract are displayed. Training needs of personnel and knowledge transfer to maintain the mastering of the functioning of the machine park are briefly analyzed.