Maintainability Analysis

  • Alessandro Birolini

Abstract

At equipment and system level, maintainability has a great influence on reliability and availability. This is true in particular if redundancy has been implemented and redundant parts can be repaired on line, i.e. without interruption of operation at system level. Maintainability is thus an important parameter in the optimization of availability and life-cycle cost. Achieving high maintainability in complex equipment and systems requires appropriate activities which must be started early in the design & development phase and be coordinated by a maintenance concept. To these activities belong fault detection and isolation (built-in tests), partitioning of the equipment or system into independent last repairable/line replaceable units, and logistical support (including after-sales service). A maintenance concept has to be tailored to the equipment or system considered. After some basic concepts (Section 4.1), Section 4.2 deals with a maintenance concept for complex equipment and systems. Section 4.3 considers maintainability aspects in design reviews and Section 4.4 presents methods and tools for maintainability prediction. Models for spare part provisioning are investigated in Section 4.5 with some considerations on cost optimization in Section 4.6. Design guidelines for maintainability are given in Section 5.2. The influence of preventive maintenance, imperfect switching, and incomplete coverage on system’s reliability and availability is investigated in Section 6.8.

Keywords

Assure limE Convolution PCBs 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Alessandro Birolini
    • 1
    • 2
  1. 1.Arrigo-MoscianoScandicci (FI), TuscanyItaly
  2. 2.Swiss Federal Institute of TechnologyZürichSwitzerland

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