| 정기검사정책과 개선에 관한 연구 |
| 임평순, 서용성, 박영택 |
| 성균관대학교 산업공학과 |
| A Study on the Periodic Inspection Policy and Its Improvement |
| Pyoung-Soon Im, Yong-Sung Suh, Young-Taek Park |
| Dept. of Industrial Engineering, Sungkyunkwan University |
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| ABSTRACT |
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Some systems such as early warning system should be inspected occasionally in order to detect failures. If the system is inspected too frequently, inspection cost increases. On the other hand, if the number of inspections is reduced too much, the undetected system downtime cost increases. Thus, it is of interest to find effective inspection schedule, which minimizes the sum of inspection and downtime costs. When the system has increasing failure rate, inspection intervals get shorter as time goes on. But a common practice is to inspect the system at predetermined periodic intervals. In this paper, periodic inspection policy and a modified periodic inspection policy are considered. The modified policy is easily applicable and cost-effective. Some numerical examples are included in order to explain the modified inspection ploicy and its cost performance. |
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