A Multistate Availability Model: System Performance and Component Importance

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We study a particular multistate system whose components are in one of two states - good or bad. The system state is defined to be the number of good components. An example of such a model is a power generation system consisting of n power stations. Repair is to good-as-new. A utility is assigned to the states which the system can assume, and reflects the relative value of each of the states. The performance at any time t and the steady state performance are studied by using s-expected utility. A concept of component importance is introduced which is a measure of improvement in s-expected utility of the system per unit of improvement in component availability.

Original languageEnglish
Pages (from-to)97-98
Number of pages2
JournalIEEE Transactions on Reliability
Issue number1
StatePublished - Apr 1982


  • Availability
  • Component importance
  • Multistate system

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Electrical and Electronic Engineering


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