Abstract
Closed-form expressions are derived for the steady-state availability, mean rate of failure, mean
duration of downtime and reliability of a general system with randomly and independently failing repairable
components. Component failures are assumed to be homogeneous Poisson events in time and repair durations
are assumed to be exponentially distributed. The results are expressed in terms of the mean rates of failure
and mean durations of repair of the individual components. These expressions also allow derivation of closedform
expressions for the rates of change of the various probabilistic system performance measures with respect
to the mean rate of failure and the mean duration of repair of each component. These expressions provide
a convenient framework for identifying important components within the system and for decisionmaking
aimed at upgrading the system availability or reliability, or reducing the mean duration of system
downtime. Example applications to an electrical substation system demonstrate the use of the formulas developed
in the paper.
| Original language | English |
|---|---|
| Title of host publication | Safety and Reliability of Engineering Systems and Structures |
| Number of pages | 690 |
| Volume | Book of abstracts and CD-ROM with full texts |
| Place of Publication | Rotterdam, Netherlands |
| Publisher | Millpress |
| Publication date | 2005 |
| ISBN (Print) | 90-5966-040-4 |
| Publication status | Published - 2005 |
| Event | 9th International Conference on Structural Safety and Reliability - Rome, Italy Duration: 19 Jun 2005 → 23 Jun 2005 |
Conference
| Conference | 9th International Conference on Structural Safety and Reliability |
|---|---|
| Country | Italy |
| City | Rome |
| Period | 19/06/2005 → 23/06/2005 |