Development of Maintenance Model and Strategy For Addis Ababa Light Railway Transport (AALRT) Railway Track Line
| dc.contributor.advisor | Abdulsetar, Siraj (Mr.) | |
| dc.contributor.author | Melese, Teshome | |
| dc.date.accessioned | 2019-01-11T12:53:19Z | |
| dc.date.accessioned | 2023-11-04T15:18:12Z | |
| dc.date.available | 2019-01-11T12:53:19Z | |
| dc.date.available | 2023-11-04T15:18:12Z | |
| dc.date.issued | 2016-12 | |
| dc.description.abstract | There is a need among transportation maintenance decision makers for a better understanding of the long-term behavior of railroad tracks. The use of accurate techniques (maintenance model and strategy) to predict track conditions increases track safety and maintenance effectiveness as well as reduce maintenance costs through improve planning. This paper describes the track maintenance model and strategyrelevant for Addis Ababa Light Rail Transit.By using reliability model with weibull distribution, the expected number of critical and degraded failures are determined. Then three failure mechanisms are determined and the rate of critical and degraded failures is determined for each failure mechanism. Finally the governing value of critical and degraded failure are chosen to determine reliability parameters such as mean time to failure(MTTF),mean time to detect(MTTD),mean time before failure(MTBF),mean time to repair(MTTR) and preventive maintenance index(Ipm). The analysis result shows that, the Frequency of critical failure is reduced by 56%by conducting three inspection per year. And also the Mean time until any failure is detected by conducting inspection at every four months of interval for AALRT Railway track line (MTBF) is obtained as 2.55 years. Then after, four maintenance strategies are developed for AALRT. These are: Repair as soon as the component is identified to be in a state where repair is necessary, repair when the component is identified in the state where a major repair is required, repair when the component is identified as being in the state where renewal is needed and no repair, component is allowed to deteriorate without any intervention. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/15672 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Maintenance model or strategy | en_US |
| dc.subject | Degraded failure | en_US |
| dc.subject | Critical failure | en_US |
| dc.subject | mean time to failure | en_US |
| dc.subject | mean time before failure | en_US |
| dc.subject | repair | en_US |
| dc.title | Development of Maintenance Model and Strategy For Addis Ababa Light Railway Transport (AALRT) Railway Track Line | en_US |
| dc.type | Thesis | en_US |