The Reliability of Auxiliary Systems - Power and Cooling; Further Insights

This paper provides a continuation of previously presented (1) availability analysis of power and cooling subsystems in an electronic switching centre. The following items are treated in particular. Failure mechanisms of power and cooling equipment are interconnected, both subsystems including common elements such as AC power supply. Availability calculations are carried out considering this interconnection. Methods of improving the availability of air conditioning system are investigated and corresponding availability figures are derived. Conclusions are arrived at on the availability of power and cooling, treated in an integrated way.