A pure research study on an optimal simultaneous maintenance policy of a serial system
Existing group maintenance models do not consider what to do when the repair limit (i.e. number of failed machines or age of machines) has not yet been reached. This study proposes to improve traditional group maintenance models by optimizing the use of the downtime of the system. This is done by si...
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| Format: | text |
| Language: | English |
| Published: |
Animo Repository
1999
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| Online Access: | https://animorepository.dlsu.edu.ph/etd_bachelors/1644 |
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| Institution: | De La Salle University |
| Language: | English |
| Summary: | Existing group maintenance models do not consider what to do when the repair limit (i.e. number of failed machines or age of machines) has not yet been reached. This study proposes to improve traditional group maintenance models by optimizing the use of the downtime of the system. This is done by simultaneously maintaining the machines scheduled for maintenance at the next period with machines due for maintenance at the present period in order to incur savings. Three different benefits were considered in relation to this advance maintenance--savings from downtime, savings from advance repair and savings from advance replacement. This study allows multiple maintenance operations. It consists of three types of maintenance actions namely: repair, replacement, and do nothing.
The model was formulated as a mixed integer non-linear programming model. The decision of the model is to determine which machines must be simultaneously maintained along with those scheduled machines at the evaluation period in order to generate the maximum expected savings. These savings are then subjected to budget and reliability constraints. |
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