Simulation: the correct approach to complex availability problem]

  • Authors:
  • Gene J. Schroeder;Marvin M. Johnson

  • Affiliations:
  • Science and Research Headquarters, Strategic Air Command (SAC/NR), Offutt Air Force Base, Nebraska;Industrial Engineering Department, University of Nebraska-Lincoln, Lincoln, Nebraska

  • Venue:
  • WSC '88 Proceedings of the 20th conference on Winter simulation
  • Year:
  • 1988

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Abstract

Recently, system owners and operators have increasingly emphasized the actual amount of time equipment is capable of performing its intended function.For military systems, added complexity, longer service life requirements, reduced periodic maintenance, and less frequent checkouts have increased system availability requirements. However, these factors compound the difficulty in estimating the system's true availability.With dormant or semi-dormant systems, the amount of time a system “appears” available may differ from the “real” availability. The difference in “real” and “apparent” availability is often the result of a transition from an operational but dormant state to an inoperational but dormant state.The major contributions of this research are:(1) the development of the concept of “complex” availability that applies to systems which combine two or more elements of instantaneous, mission system, or steady-state availability, and(2) the development of a modeling technique to estimate the “real” availability for a system which involves “complex” availability.