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首页> 外文期刊>Reliability Engineering & System Safety >Postponed maintenance scheduling integrating state variation and environmental impact
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Postponed maintenance scheduling integrating state variation and environmental impact

机译：推迟维护调度整合状态变异和环境影响

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摘要

In asset management, defect signals are critical indicators of upcoming malfunctions, whose initialization and growth are often affected by uncertain environmental stresses. It is cost-effective to postpone the removals of defects, so as to take advantage of the remaining useful lifetime since the defect identification. However, the impacts of environmental damage as well as heath state variation on postponement period are rarely addressed, which may lead to non-negligible malfunction hazard and maintenance resource waste. This study addresses these challenges by designing a state-based postponement maintenance policy. The environmental damage to asset lifetime is characterized by (a) random increment of state transition rates and (b) probabilistic malfunction risk. Two levels of postponed maintenance windows are set according to inspection consequences. Level-1 window is pre-set along with a finite number of inspections, where a normally working asset over the inspection zone is left untouched until the window. Level-2 window is determined upon the defect identification, offering shorter postponed duration due to the vulnerability. The applicability is demonstrated by a numerical experiment on asset management of oil pipelines.
机译：在资产管理中，缺陷信号是即将发生故障的关键指标，其初始化和增长往往受环境压力不确定的影响。推迟缺陷的去除是经济有效的，以利用自缺陷识别以来的剩余有用的寿命。然而，很少解决环境损害以及荒地州对延期期的影响，这可能导致不可忽略的故障危险和维护资源浪费。本研究通过设计基于国家的推迟维护政策来解决这些挑战。对资产寿命的环境损害的特点是（a）状态转换率的随机增量和（b）概率故障风险。根据检验后果设置两级推迟维护窗口。 Level-1窗口与有限数量的检查一起预先设置，其中在检查区域上的通常工作资产仍未被触及，直到窗口。在缺陷识别时确定level-2窗口，由于漏洞，提供更短的推迟持续时间。通过对石油管道资产管理的数值实验证明了适用性。

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