major plant renovation

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Post on 16-Dec-2015

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Plant renovation document

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Major Plant renovationProblem 6-5As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationships are as follows:Do each of the followingb.Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time.(Round your answers to 1 decimal place.)ANSWERThe minimum cycle time = maximum task time =1.2 minutes The maximum cycle time = .2 +.4 +.2 +.4 +1.2 +1.2 + 1.0 = 4.6 minutesCalculated Cycle time = 480 (min/day) / 240 (units/day) = 2 minutesc.Determine the minimum number of stations needed.(Round your answer to the next whole number.)ANSWERN = sum of task times / Cycle Time = 4.6 minutes/2 minutes = 2.3Round it off to 3 (Because its stations needed, we cannot have a fraction of a station)Minimum number of stations is 3d.Assign tasks to workstations on the basis of greatest number of following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice.