Towards partial autonomy of operation and maintenance of unreliable equipment
This study considers the case of unreliable equipment subjected to random failures that induce high maintenance and environmental costs. We consider situations where the equipment is located in remote areas, which are difficult to access, and situations where there could be confinement linked to a p...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023072638 |
| _version_ | 1797669771474370560 |
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| author | Khaled H. Almotairi |
| author_facet | Khaled H. Almotairi |
| author_sort | Khaled H. Almotairi |
| collection | DOAJ |
| description | This study considers the case of unreliable equipment subjected to random failures that induce high maintenance and environmental costs. We consider situations where the equipment is located in remote areas, which are difficult to access, and situations where there could be confinement linked to a pandemic, making it impossible to perform the replacement of the failed equipment. In such situations, the objective is to explore the possibility of providing a system with self-maintenance capabilities to a certain extent by adding redundant (stand-by) identical modules. Both the designs (with and without passive redundancy) are considered. A mathematical cost model is developed for each alternative to help decide whether to adopt redundancy and determine the optimal number of redundant modules, which minimises the total expected cost. The latter includes the costs related to the acquisition, maintenance, and recycling of failed modules. A numerical example is presented, and a sensitivity study is performed to investigate the effect of variations in relevant input parameters on the optimal design. |
| first_indexed | 2024-03-11T20:48:21Z |
| format | Article |
| id | doaj.art-6044bc71dc0e491a95bd74e2eac613b1 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-11T20:48:21Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-6044bc71dc0e491a95bd74e2eac613b12023-10-01T06:02:25ZengElsevierHeliyon2405-84402023-09-0199e20055Towards partial autonomy of operation and maintenance of unreliable equipmentKhaled H. Almotairi0Computer Engineering Department,Computer and Information Systems College, Umm Al-Qura University, 21955 Makkah, Saudi ArabiaThis study considers the case of unreliable equipment subjected to random failures that induce high maintenance and environmental costs. We consider situations where the equipment is located in remote areas, which are difficult to access, and situations where there could be confinement linked to a pandemic, making it impossible to perform the replacement of the failed equipment. In such situations, the objective is to explore the possibility of providing a system with self-maintenance capabilities to a certain extent by adding redundant (stand-by) identical modules. Both the designs (with and without passive redundancy) are considered. A mathematical cost model is developed for each alternative to help decide whether to adopt redundancy and determine the optimal number of redundant modules, which minimises the total expected cost. The latter includes the costs related to the acquisition, maintenance, and recycling of failed modules. A numerical example is presented, and a sensitivity study is performed to investigate the effect of variations in relevant input parameters on the optimal design.http://www.sciencedirect.com/science/article/pii/S2405844023072638Preventive maintenance PMCorrective maintenance CMFailure rateRedundancyOptimisation |
| spellingShingle | Khaled H. Almotairi Towards partial autonomy of operation and maintenance of unreliable equipment Heliyon Preventive maintenance PM Corrective maintenance CM Failure rate Redundancy Optimisation |
| title | Towards partial autonomy of operation and maintenance of unreliable equipment |
| title_full | Towards partial autonomy of operation and maintenance of unreliable equipment |
| title_fullStr | Towards partial autonomy of operation and maintenance of unreliable equipment |
| title_full_unstemmed | Towards partial autonomy of operation and maintenance of unreliable equipment |
| title_short | Towards partial autonomy of operation and maintenance of unreliable equipment |
| title_sort | towards partial autonomy of operation and maintenance of unreliable equipment |
| topic | Preventive maintenance PM Corrective maintenance CM Failure rate Redundancy Optimisation |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023072638 |
| work_keys_str_mv | AT khaledhalmotairi towardspartialautonomyofoperationandmaintenanceofunreliableequipment |