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. Word Table Tools Mailings Review View Help Design Layout Tell me what you want to do TAaBbccDd AaBbCcDd AaBbCc AaBbccD AaB 1 Normal 1 No Spa... Heading 1 Heading 2 Title Paragraph Styles 250,000 units/yr Customer Demand Typical Production 3. 20 days/month 1 shift 8 brs/day 480 min/shift Determine a Daily Demand b Hourly Demand c TAKT time (sec/unit) sec/unit Determine TAKT for each letter using only designated constraints as inputs d Breaks e Breaks f Scrap rate @ g Scrap rate @ h Rework @ i Equipment Uptime j Daily Meetings k Breaks 30 min/shift 20 min/shift 100 pcs/day 10% 5% 90% 5 min/shift 30 min/shift 5 min/shift 50 pcs/day 20 min/shift 10% 95 % Daily Meeting Scrap I Breaks Rework Uptime 4. Work Content for a widget product- 27 minutes a 2.2 min/unit Takt Time What is the minimum number of workers 42 sec/unit 18 min b Takt Time Work Content for a widget product - What is the minimum number of workers 1.7 hrs 2.1 hrs 5.3 min c Work Content for a widget product Work Content for a custom widget product - Takt Time. Production plans to build 75% base and 25% custom widgets What is the minimum number of workers 9 Course Content-G. w, Document2-Word x Takt Time AssignmeExplanation / Answer
3.a) Customer demand is given as 250,000 units per year or 365 days.
Hence,daily demand=250,000 units/365 days=685 approximately
b) Thus,as derived in part-a) the daily demand or demand in 24 hours is 685 units.
Hourly demand=685 units/24 hours=29 units approximately
c) The available production time per day is 480 minutes per daily shift or (480*60)=28,800 seconds.The daily demand is calculated as 685 in part-a).
Therefore,TAKT time=28,800 seconds/685 units=42 seconds
d) Now if the break is 30 minutes per shift then the daily production time will become=(480-30)mins=450 minutes or (450*60)=27,000 seconds
Now,TAKT time=27,000 seconds/685 units=39.42 seconds approximately
e) If the break is 20 minutes per shift then the daily production time will become=(480-20)mins=460 minutes or (460*60)=27,600 seconds
Now,TAKT time=27,600 seconds/685 units=40.3 seconds approximately
f) If the scrap rate is 100 pieces per day then the number of units to be produced becomes=(685+100)=785 units.The available production time in a day is still 28,800 seconds
Thus,TAKT time=28,800 seconds/785 units=36.69 seconds
g) If the scrap rate is 10% then total number of scrap units=(0.10*685 units)=68 units approximately which have to reproduced again.The available production time available is still 28,800 seconds.
Hence,TAKT time=28,800 seconds/753 units=38.25 seconds
h) The rework is 5%.Thus the number of units that have to be reworked=(0.05*685 units)=34 units approximately.The available work time per day is 28,800 seconds.
TAKT time=28,800 seconds/719 units=40 seconds
i) Equipment uptime or equipment/machine running time is 90% or (0.9*28,800 seconds)=25,920 seconds.Daily demand is still 685 units.
TAKT time=25,920 seconds/685 units=38 seconds approximately
j) The daily meeting is 5 minutes per shift.Thus,available production time per day=(480-5)mins=475 minutes per day or (475*60)=28,500 seconds.The daily demand is 685 units.
TAKT time=28,500 seconds/685 units=41.6 seconds
k) The break time per shift is 30 minutes,the break time per shift is 5 minutes.Thus,the total daily production time becomes=(480-30-5)mins=445 minutes or (445*60)=27,600 seconds.The scrap is 50 pieces per day which has to be reproduced again.Thus,the total units which have to be produced daily=(685+50)units=735 units
TAKT time=27,600 seconds/735 units=36.32 seconds
l) Now,the break is 20 minutes per shift which makes the available production time per day as (480-20)mins=460 minutes.The rework is 10%.Thus,the total number of units to be reworked=(0.1*685 units)=68 units approximately and the equipment running time or uptime is 95% or (0.95*28,800 seconds)=27,360 seconds
TAKT time=27,360 seconds/753 units=36.33 seconds
4.a) Work content for a widget product is 27 minutes.The TAKT time is 2.2 minutes per unit.
Total number of units that can be produced within the work content time=27 minutes/2.2 minutes=12 units approximately.
Therefore,the minimum number of workers or the target manpower in this case is 12.
b) The TAKT time is 42 seconds/unit and the work content for a widget product is 18 minutes or (18*60)=1080 seconds
Total number of units that can be produced within the work content time=1080 seconds/42 seconds=26 units approximately
Hence,the minimum number of workers or the target manpower in this instance is 26.
c) Work content for a widget product is 1.7 hours or 102 minutes and the work content for custom widget product is 2.1 hours or (2.1*60)=126 minutes.The TAKT time is 5.3 minutes.
The number of custom widgets that can be produced within the work content time=126 minutes/5.3 minutes=23 units approximately
If the company decides to produce 25% customs widget then the total number of custom widgets it will produce=(0.25*23 units)=5 units approximately.
The number of base widgets that can be produced within the work content time=102 minutes/5.3 minutes=19 units approximately
The number of base widgets the company will produce considering that it wants to produce 75% of the base widgets=(0.75*19 units)=14 units
Thus,minimum number of workers the company would require or target manpower=(14+5)units=19
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