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An investigation to find the optimal maintenance interval for escalators based on their usage.

Hart, K. 't (2016) An investigation to find the optimal maintenance interval for escalators based on their usage.

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Abstract:To cope with the flow of commuters using the subway every day, the RET N.V. has close to 150 escalators. The commuters are able to move between floors safely and quickly with the escalators. To keep the escalators operating as desired and required, maintenance should be performed on a regular basis. Currently maintenance is outsourced to the original equipment manufacturer but they give no insight in the necessity of the maintenance done nor give feedback with the condition of the equipment. This report will create a tool for the RET which gives them the means to justify the performed maintenance. Using the electric current as a parameter for the load the escalator undergoes and summing this on a period basis. The resulting trend increases in relation to the mechanical losses of the system, an equivalent for the degeneration of the components of the escalators. The optimized maintenance interval is found when the accumulated degeneration exceeds set limits. However due to unclear current maintenance intervals and limits to degeneration an optimized interval was not found. It is recommended to continue measuring current data and find limits by degenerating an escalator until it is close to failure.
Item Type:Internship Report (Master)
Clients:
RET, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Usage Based Maintenance, Escalators, Interval Determination, Load Parameter
Link to this item:http://purl.utwente.nl/essays/69905
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