Question 1 Figure Q1 Shows The Runtime And Downtime Of Machines In A Department The Department Operates With 15 Machine 1 (219.15 KiB) Viewed 21 times
Question 1 Figure Q1 Shows The Runtime And Downtime Of Machines In A Department The Department Operates With 15 Machine 2 (32.73 KiB) Viewed 21 times
QUESTION 1 Figure Q1 shows the runtime and downtime of machines in a department. The department operates with 15 machines in a 8 hours per shift, 3 shifts per day, 6 days per week and 52 weeks per year. (a) (b) MITR Tsu 8 Hr7 Hr (d) Running time = 720 Hr MITR =8 Hr Figure Q1 Calculate the availability of the machines. Tsu 7 Hr Running time: = 720 Hr (5 marks) MALAYSIA Given that the machines operate at 85% of the rated speed and the defect rate is 2%. Calculate the Overall Equipment Effectiveness (OEE). дем (5 marks) (c) In order to improve the OEE, the setup time, Tsu shall be reduced. Suggest and مليسيا ملاك explain three (3) improvements related to the design of the tools. اونیورسیتی (6 marks) Your team is looking into the feasibility of implementing Predictive Maintenance as means to improve MTTR. Present a pros-and-cons comparison between Preventive and Predictive Maintenance. (4 marks)
(e) Each time a machine is down, the company loses $200 per hour (per machine) in lost revenue. Currently it is running a Preventive Maintenance with a team of maintenance crew that costs $1500 per week. A new Predictive Maintenance shall be able to reduce MTTR from 8 Hours to 1 Hour, requires a lesser maintenance crew cost of $500 per week and an initial investment of $5000 per machine. Justify the return on investment of the Predictive Maintenance program in terms of (i) potential lost reduction and (ii) time needed to recover the initial investment.
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