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Safe job rotation scheduling with minimum setup time |
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| รหัสดีโอไอ | |
| Creator | Sun Olapiriyakul |
| Title | Safe job rotation scheduling with minimum setup time |
| Contributor | Pavinee Rerkjirattikarn, Santipap Satitanekchai |
| Publisher | Research and Technology Transfer Affairs Division.Khon Kaen University. |
| Publication Year | 2560 |
| Journal Title | Asia-Pacific Journal of Science and Technology (APST) |
| Journal Vol. | 22 |
| Journal No. | 4 |
| Page no. | 1-9 |
| Keyword | Noise exposure, Job rotation, Productivity, Occupational safety,Optimization |
| URL Website | https://tci-thaijo.org/index.php/APST/index |
| Website title | https://tci-thaijo.org/index.php/APST/article/view/107640 |
| ISSN | 2539-6293 |
| Abstract | Workforce scheduling can be a challenging task especially for heavy industries, where workers are regularly exposed to the excessive indoor noise levels of a harsh working environment. Repetitive exposure to loud noise can lead to hearing loss. In some situations, job rotation isa necessary measure for reducing the daily noise exposure among workers. However, excessive rotation of workers can result in an unnecessary loss of productivity and work flow continuity, due to the time required for machine setup and transferring workers between workstations. This study uses mathematical modeling techniques to design job rotation schedules. The goal is to control and limit the daily noise exposure levelsof workers to a safe level of 90 dBA, while minimizing the total setup time caused by job rotation. A case study of a metal container manufacturing plant in Thailand is presented to illustrate the application of the proposed model in a realistic situation. At first, this study determines the optimal workforce schedule with a minimum number of workers required to process tasks. Then, an additional worker is added to the workforce to reduce the need to rotate workers, resulting in less setup time and productivity loss. This repeats until the productivity loss due to setup cannot be reduced further. When labor and productivity loss costs are known, planners areable to select the most desirable job rotation schedule |
