Resource constrained scheduling problem at U.S. Naval Shipyards
Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2013
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| Online Access: | http://hdl.handle.net/1721.1/81615 |
| _version_ | 1826195766275735552 |
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| author | Nawara, Terrence M. (Terrence Michael) |
| author2 | Olivier L. de Weck and Mark W. Thomas. |
| author_facet | Olivier L. de Weck and Mark W. Thomas. Nawara, Terrence M. (Terrence Michael) |
| author_sort | Nawara, Terrence M. (Terrence Michael) |
| collection | MIT |
| description | Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013. |
| first_indexed | 2024-09-23T10:15:06Z |
| format | Thesis |
| id | mit-1721.1/81615 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:15:06Z |
| publishDate | 2013 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/816152019-04-11T00:06:00Z Resource constrained scheduling problem at U.S. Naval Shipyards Resource constrained scheduling problem at United States Naval Shipyards Nawara, Terrence M. (Terrence Michael) Olivier L. de Weck and Mark W. Thomas. Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering. Mechanical Engineering. Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013. "June 2013." Cataloged from PDF version of thesis. Includes bibliographical references (p. 71-74). Submarine repair schedules are some of the most complex schedules seen in project management. Repairs of a nuclear U.S. submarine are resource constrained since resources are divided among approximately thirty shops (e.g. electricians, welders, and pipefitters). The system complexity, the tight spaces, the operational nuclear reactor, the challenges inherent in repair, and resource competition all contribute to a dense integrated schedule. Minimizing the overall length of each project, the "makespan," is the primary objective function of this thesis. This thesis uses a commercially available simulation package, @Risk, to analyze a realistic submarine repair schedule. Simulation is used to analyze uncertainty in the task durations and identify crucial tasks that highly impact the makespan. Finally, a genetic algorithm is tested to assign resources to minimize the makespan. The submarine repair data was based on a schedule with 4038 tasks and 7723 constraints or ties. A simulation assigned all 4038 tasks a triangle probability distribution with the duration set at plus or minus 10 percent of the original duration estimate. Sensitivity analysis of the simulation identified key task nodes having significant impact on the overall duration. These top ten crucial tasks were then given similar probability distributions and another simulation was run keeping the remaining 4028 tasks as deterministic durations. Minimizing the makespan could only be executed on a small subset of data, 25 tasks, due to limiting assumptions on reducing task durations by assigning more resources. An overall improvement of 5.5-15.6 % was achieved; this gives an indication of the approximate makespan optimization potential in current U.S. submarine repair, maintenance and overhaul operations. by Terrence M. Nawara. S.M.in Engineering and Management S.M.in Naval Architecture and Marine Engineering 2013-10-24T17:35:21Z 2013-10-24T17:35:21Z 2013 Thesis http://hdl.handle.net/1721.1/81615 858873077 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 74 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Nawara, Terrence M. (Terrence Michael) Resource constrained scheduling problem at U.S. Naval Shipyards |
| title | Resource constrained scheduling problem at U.S. Naval Shipyards |
| title_full | Resource constrained scheduling problem at U.S. Naval Shipyards |
| title_fullStr | Resource constrained scheduling problem at U.S. Naval Shipyards |
| title_full_unstemmed | Resource constrained scheduling problem at U.S. Naval Shipyards |
| title_short | Resource constrained scheduling problem at U.S. Naval Shipyards |
| title_sort | resource constrained scheduling problem at u s naval shipyards |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/81615 |
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