The Path to Product Excellence: Avoiding Common Pitfalls and Enhancing Commun...
Operations Notes
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99. * Limited options exist Modify capacity Use capacity Intermediate-range planning Subcontract Add personnel Add equipment Build or use inventory Add shifts Short-range planning Schedule jobs Schedule personnel Allocate machinery * Long-range planning Add facilities Add long lead time equipment *
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104. Estimate Capacity Requirements Item Client X Client Y Annual demand forecast (copies) 2000.00 6000.00 Standard processing time (hour/copy) 0.50 0.70 Average lot size (copies per report) 20.00 30.00 Standard setup time (hours) 0.25 0.40 [ Dp + ( D / Q ) s ] product 1 + ... + [ Dp + ( D / Q ) s ] product n N [1 – ( C /100)] M =
105. Estimate Capacity Requirements Item Client X Client Y Annual demand forecast (copies) 2000.00 6000.00 Standard processing time (hour/copy) 0.50 0.70 Average lot size (copies per report) 20.00 30.00 Standard setup time (hours) 0.25 0.40 [2000(0.5) + (2000/20)(0.25)] client X + [6000(0.7) + (6000/30)(0.4)] client Y (250 days/year)(1 shift/day)(8 hours/shift)(1.0 – 15/100) M =
106. Estimate Capacity Requirements Item Client X Client Y Annual demand forecast (copies) 2000.00 6000.00 Standard processing time (hour/copy) 0.50 0.70 Average lot size (copies per report) 20.00 30.00 Standard setup time (hours) 0.25 0.40 M = = 3.12 4 machines 5305 1700
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117. Seasonal patterns are characterized by repeatable periods of ups and downs over short periods of time; if you have seasonal patterns, you should have complementary demand
118. Cyclical patterns are regular patterns in a data series that take place over long periods of time.
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142. Dock Aisle TIME PERIOD 1 2 3 4 5 6 Total Requirement* 6 12 18 15 13 14 78 Current employment = 10 part-time clerks
153. Independent Demand A B(4) C(2) D(2) E(1) D(3) F(2) Dependent Demand Independent demand is uncertain. Dependent demand is certain.
154. MRP Inputs MRP Processing MRP Outputs Master schedule Bill of materials Inventory records MRP computer programs Changes Order releases Planned-order schedules Exception reports Planning reports Performance- control reports Inventory transaction Primary reports Secondary reports
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164. An ordering schedule that covers the gross requirements for each week is called lot-for-lot (LFL) .
165. The fixed order quantity policy (FOQ) uses a fixed order size for every order or production run.
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171. Develop a tentative master production schedule Use MRP to simulate material requirements Convert material requirements to resource requirements Firm up a portion of the MPS Is shop capacity adequate? Can capacity be changed to meet requirements Revise tentative master production schedule Change capacity Yes No Yes No
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Notes de l'éditeur
32 We need to determine the number of machines required for this set of tasks. This is the basic equation. Note, this has been shortened from the example in the book due to space limitations.
33 We substitute in the basic information. This slide advances automatically.
35 The equation is solved and the number of machines is known. Notice the rounding up, necessary to actually meet the capacity requirements.
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26 First step is to solve for the number of employees required at peak demand.
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