Cost Analysis Model with Minimal Repair of New Unit Repair Policy under Periodic Maintenance Policy

정기보전 제도에서 응급수리를 고려한 신제품 수리정책에서의 비용분석 모델

This paper deals with cost analysis model in periodic maintenance policy. The repair policy with minimal repair is considered as follow : as the occurrence of failure between minimal repair and periodic interval time, unit is replaced by a new unit before the periodic maintenance time comes. Then total expected cost per unit time is calculated according to time delta t in a view of customer's. The total expected costs are included repair and usage cost : operating, fixed, minimal repair, periodic maintenance and new unit expected cost. Numerical example is shown in which failure time of item has Normal distribution.