4.5 Maintenance and repair analysis and considerations
4.5 維護與修理分析及考量
The performance of a repairable system is greatly influenced by the system maintainability as well as the repair or maintenance strategies employed. The availability performance measure is the appropriate measure for evaluating the influence of maintenance and repair on system dependability when long-term provision of function is the critical requirement. Reliability is the appropriate performance measure when continuous provision of function is the critical requirement.
可修理系統的績效，受到系統維護度及所採用的修理或維護策略之影響很大。當長期提供功能是關鍵的要求時，可用度績效度量，是評估維護與修理對於系統可恃性的影響程度最適切的方法，當連續提供功能是關鍵要求時，可靠度是最適切的績效度量。
Repair of a system during operating without interruption of its function is normally possible only for a redundant system structure with accessible redundant components. If so, the repair or replacement increases system reliability performance and availability performance.
It is usually necessary to perform a separate analysis to evaluate repair and maintenance aspects of a system (see IEC 60706-1, IEC 60706-2 and IEC 60300-3-10).