Jean Boillot  Abstract

       Analysis of the operational statistics and actions to
       improve the reliability.

   The CERN PS complex, comprising 8 accelerators, supplies various
   particle beams to different users working in parallel, in a
   repetitive sequence called a supercycle. Due the location of this
   complex at the source of all the CERN particles, a constant
   attention is paid on beam availability. 

   Thanks to electronic logbooks installed on the different machines
   and to several programs for data treatment, meaningful statistics
   are available and are used for the analysis of the reliability of
   the machines; this allows a better understanding and a regular
   follow-up of the problems, and in consequence decisions about
   improvements either on equipment or on the organization of the
   operation can be taken more easily. Examples of actions undertaken 
   during the previous years will be presented and the results on
   reliability improvement will be discussed.