A key component (equipment) I a manufacturing workshop that operates 24 hours a

Question

A key component (equipment) I a manufacturing workshop that operates 24 hours a day in 3 shifts of 9, 8 and 7 hours. The LSS Green Belt in charge of the plant schedules a downtime during the last shift of 7 hours. The equipment will be staffed for Shift 1 and 2 with the following schedule per shift: 30 minutes lunch time and 10 minutes of service talks. Downtime due to Setup amounts to 75 minutes per shift, while the downtime due to breakdown and technical issues takes 70 minutes per shift. Speed loss and other minor losses took 2 hours in the first shift and 105 minutes in the second shift. Given the information above, compute: a) b) c) d) Total Operating Time Net Operating Time (Scheduled Time) Running Time (Available Time) Overall Equipment Efficiency

Explanation / Answer

Mins Mins Mins Mins Mins Mins Mins Mins Mins Mins Mins Mins Mins TPS DT TOP = TPS-DT LT ST NO= LT+ST NET=TOP-NO SUT ODT TDT=SUT+ODT RT=NET-TDT L AW= RT-L AW/TPS Time per shift Down time Total operating time Lunch time Service talks Non operating time Net operating time Set up time Other down time Total down time Running time Losses Actual working Shift 1 540 0 540 30 10 40 500 75 70 145 355 120 235 43.5% Shift 2 480 0 480 30 10 40 440 75 70 145 295 105 190 39.6% Shift 3 420 420 0 0 0 0 0 0 0 0 0 0 0 0.0% Total 1440 420 1020 60 20 80 940 150 140 290 650 225 425 29.5% Total operating time Net operating time Running time Overall Efficiency Ans A Ans B Ans C Ans D

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