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ALS 2 1documentation

October 2014

Project: The Assembly Line Simulator Project

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Università degli Studi di Perugia

This is the documentation related to ALS (Assembly Line Simulator) version 2.1

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Event and object oriented simulation to fast evaluate operational objectives of mixed model assembly lines problems

Article

April 2012

Project

The Assembly Line Simulator Project

Rationale To evaluate performances of a mixed model assembly line may be complicated. This complication is a result of blockage and starvation caused by the arrival of different models to the line , having different assembly time requirements at each station. Considering the throughput as the main operational design objective, the effects of these phenomena on line throughput are very difficult to evaluate. Unfortunately its evaluation is fundamental in almost all procedures and algorithms developed to solve MALBP (Mixed-model Assebly Line Balancing Problem), since the estimation of objective functions that includes performance indicators is often required. The delicacy of this issue has been accurately outlined by [Bukchin 1998]. He argued that the only practical method to accurately evaluate throughput is a simulation study, which is very time consuming and hard to perform, and that for this reason, instead, various performance measures are usually used in order to evaluate and compare design alternatives. These performance measures are required to be highly correlated with the objective in question (i.e. throughput). Aim The aim of this project is to overcome the limit of using performance measures instead of simulated throughput, by developing a parametric simulator for mixed model lines that can quickly simulate different line configurations and can be used iteratively in algorithms and procedures. Bukchin, J., 1998, "A comparative study of performance measures for throughput of a mixed model assembly line in a JIT environment", International Journal of Production Research, 36, 2669-2685. ... [more]

Article

Test reports for K Basins vertical fuel handling tools

Meling

The vertical fuel handling tools, for moving N Reactor fuel elements, were tested in the 305 Building Cold Test Facility (CTF) in the 300 Area. After fabrication was complete, the tools were functionally tested in the CTF using simulated N Reactor fuel rods (inner and outer elements). The tools were successful in picking up the simulated N Reactor fuel rods. These tools were also load tested ... [Show full abstract] using a 62 pound dummy to test the structural integrity of each assembly. The tools passed each of these tests, based on the performance objectives. Finally, the tools were subjected to an operations acceptance test where K Basins Operations personnel operated the tool to determine its durability and usefulness. Operations personnel were satisfied with the tools. Identified open items included the absence of a float during testing, and documentation required prior to actual use of the tools in the 100 K fuel storage basin.

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ALS 1.1 - Documentation

September 2013

Lorenzo Tiacci

This is the documentation related to ALS (Assembly Line Simulator) version 1.1

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Full-text available

ALS 2.0 - Documentation

January 2014

Lorenzo Tiacci

This is the documentation related to ALS (Assembly Line Simulator) version 2.0

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ALS 1.2 - Documentation

September 2013

Lorenzo Tiacci

This is the documentation related to ALS (Assembly Line Simulator) version 1.2

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ALS 2 2documentation

December 2015

Lorenzo Tiacci

This is the documentation related to ALS (Assembly Line Simulator) version 2.2

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Full-text available

ALS 1.0 - Documentation

September 2013

Lorenzo Tiacci

This is the documentation related to ALS (Assembly Line Simulator) version 1.0