supply chain design chapter 10 copyright ©2013 pearson education, inc. publishing as prentice...
TRANSCRIPT
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Supply Chain DesignChapter 10
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What is Supply Chain Design?
Supply Chain Design
Designing a firm’s supply chain to meet the competitive priorities of the firm’s operations strategy.
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Service/Product
Processes Supply Chain
Link Services/Products with Internal Processes
Link Services/Products with External Supply Chain
Link Services/Products with Customers, Suppliers, and Supply Chain Processes
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Creating an Effective Supply Chain
10- 03
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Supply Chain Efficiency Curve
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Tota
l cos
ts
Supply chain performance
New supply chain efficiency curve with changes in design and execution
Inefficient supply chain operations Area of
improved operations
Improve perform-ance
Reduce costs
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Supply Chain Design Pressures
• Dynamic sales volumes
• Customer service levels
• Service/product proliferation
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Service Supply Chain
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Homecustomers
Homecustomers
Commercialcustomers
Commercialcustomers
Flowers-on-Demand floristFlowers-on-Demand florist
PackagingPackaging Flowers: Local/International
Flowers: Local/International
Arrangement materials
Arrangement materials
FedEx delivery service
FedEx delivery service
Local delivery service
Local delivery service
Internetservice
Internetservice
Maintenance services
Maintenance services
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Manufacturing Supply Chain
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East Coast West Coast East Europe West Europe Retail
USA Ireland Distribution centers
ManufacturerIreland Assembly
Poland USA Canada Australia MalaysiaTier 3 Raw materials
Germany Mexico USA ChinaTier 2 Components
Germany Mexico USATier 1Major
subassemblies
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Inventory Measures
Average aggregate inventory
value
= +
Value of each
unit of item B
Number of units of item B typically on
hand
Value of each
unit of item A
Number of units of item A typically on
hand
Weeks of supply = Average aggregate inventory valueWeekly sales (at cost)
Inventory turnover = Annual sales (at cost)Average aggregate inventory value
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Example 10.1
The Eagle Machine Company averaged $2 million in inventory last year, and the cost of goods sold was $10 million.
The breakout of raw materials, work-in-process, and finished goods inventories is on the following slide.
The best inventory turnover in the company’s industry is six turns per year. If the company has 52 business weeks per year, how many weeks of supply were held in inventory? What was the inventory turnover? What should the company do?
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Example 10.1
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Example 10.1
The average aggregate inventory value of $2 million translates into 10.4 weeks of supply and 5 turns per year, calculated as follows:
Weeks of supply =
Inventory turns =
= 10.4 weeks$2 million($10 million)/(52 weeks)
= 5 turns/year$10 million$2 million
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Application 10.1A recent accounting statement showed total inventories (raw materials + WIP + finished goods) to be $6,821,000. This year’s “cost of goods sold” is $19.2 million. The company operates 52 weeks per year. How many weeks of supply are being held? What is the inventory turnover?
Weeks of supply = Average aggregate inventory valueWeekly sales (at cost)
= = 18.5 weeks$6,821,000($19,200,000)/(52 weeks)
Inventory turnover = = 2.8 turns$19,200,000$6,821,000
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• Financial measures–Total revenue–Cost of goods sold –Operating expenses–Cash flow–Working capital–Return on assets (ROA)
Measures of Supply Chain Financial Performance
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SCM Decisions Affecting ROA
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Return on assets (ROA)
Increase ROA with higher net income
and fewer total assets
Total assetsAchieve the same
or better performance with
fewer assets
Working capitalReduce working
capital by reducing inventory investment,
lead times, and backlogs
Fixed assetsReduce the number
of warehouses through improved
supply chain design
Net incomeImprove profits
with greater revenue and lower
costs
Total revenueIncrease sales through
better customer service
Cost of goods soldReduce costs of
transportation and purchased materials
Operating expensesReduce fixed expenses by
reducing overhead associated with supply
chain operations
Net cash flowsImprove positive cash flows by
reducing lead times and backlogs
InventoryIncrease inventory turnover
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Inventory Placement
• Centralized placement
• Inventory pooling
• Forward placement
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What is Mass Customization?
Mass customization
A strategy whereby a firm’s highly divergent processes generate a wide variety of customized services or products at reasonably low costs.
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Mass Customization
• Competitive advantages– Managing customer relationships– Eliminating finished goods inventory– Increasing perceived value of services or products
• Supply chain design for mass customization– Assemble-to-order strategy– Modular design– Postponement
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Component supplier
Standardized component inventory
Order based on forecast
Fabrication Assembly Customer
Customer order
Supply to forecasted demand Supply as needed
Supply as needed
Supply Chain Design for Assemble-to-Order Strategy
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Outsourcing Processes
• Make-or-buy decision
• Vertical integration–Backward integration–Forward integration
• Outsourcing–Offshoring
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Outsourcing Decision Factors
• Comparative Labor Costs• Rework and Product Returns• Logistics Costs• Tariffs and Taxes• Market Effects• Labor Laws and Unions• Internet
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Outsourcing Potential Pitfalls
• Pulling the Plug too Quickly
• Technology Transfer
• Process Integration
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Example 10.2
Thompson manufacturing produces industrial scales for the electronics industry. Management is considering outsourcing the shipping operation to a logistics provider experienced in the electronics industry. Thompson’s annual fixed costs of the shipping operation are $1,500,000, which includes costs of the equipment and infrastructure for the operation. The estimated variable cost of shipping the scales with the in-house operation is $4.50 per ton-mile. If Thompson outsourced the operation to Carter Trucking, the annual fixed costs of the infrastructure and management time needed to manage the contract would be $250,000. Carter would charge $8.50 per ton-mile. What is the break-even quantity?
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Example 10.2
Q =Fm – Fbcb – cm
= 312,500 ton-miles
=1,500,000 – 250,0008.50 – 4.50
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Strategic Implications
• Efficient supply chains – Build-to-stock
• Responsive supply chains– Assemble-to-order– Make-to-order– Design-to-order
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Environments
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Factor Efficient Supply Chains Responsive Supply Chains
Demand Predictable, low forecast errors
Unpredictable, high forecast errors
Competitive priorities
Low cost, consistent quality, on-time delivery
Development speed, fast delivery times,
customization, volume flexibility, variety, top
quality
New-service/product
introduction
Infrequent Frequent
Contribution margins
Low High
Product variety Low High
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Design Features
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Factor Efficient Supply Chains Responsive Supply Chains
Operation strategy Make-to-stock or standardized services or
products; emphasize high volumes
Assemble-to-order, make-to-order, or customized
service or products; emphasize variety
Capacity cushion Low HighInventory
investmentLow; enable high inventory
turnsAs needed to enable fast
delivery time
Lead time Shorten, but do not increase costs
Shorten aggressively
Supplier selection Emphasize low prices, consistent quality, on-time
delivery
Emphasize fast delivery time, customization,
variety, volume flexibility, top quality
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Job Small Batch Large Batch Line Continuous Flow
Process
Efficient Supply Chain
Responsive Supply Chain
Increasing supply chain flexibility
Increasing service/product volume
Serv
ice/
Prod
uct C
hara
cter
istic
s
Stan
dard
ized
Cust
omiz
ed
Supply Chain Design Link to Processes
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Solved Problem A firm’s cost of goods sold last year was $3,410,000, and the firm operates 52 weeks per year. It carries seven items in inventory: three raw materials, two work-in-process items, and two finished goods. The following table contains last year’s average inventory level for each item, along with its value.
a. What is the average aggregate inventory value?
b. How many weeks of supply does the firm maintain?
c. What was the inventory turnover last year?
Category Part Number
Average Level
Unit Value
Raw materials 115,000 $ 3.00
22,500 5.00
33,000 1.00
Work-in-process
45,000 14.00
54,000 18.00
Finished goods 62,000 48.00
71,000 62.00
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Solved Problem a.
Part Number Average Level Unit Value Total Value
1 15,000 $ 3.00 =
2 2,500 5.00 =
3 3,000 1.00 =
4 5,000 14.00 =
5 4,000 18.00 =
6 2,000 48.00 =
7 1,000 62.00 =
Average aggregate inventory value =Copyright ©2013 Pearson Education, Inc. publishing as Prentice Hall 10 - 29
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Solved Problem a.
$ 45,000
12,500
3,000
70,000
72,000
96,000
62,000
$360,500
Part Number Average Level Unit Value Total Value
1 15,000 $ 3.00 =
2 2,500 5.00 =
3 3,000 1.00 =
4 5,000 14.00 =
5 4,000 18.00 =
6 2,000 48.00 =
7 1,000 62.00 =
Average aggregate inventory value =
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Solved Problem
b. Average weekly sales at cost = $3,410,000/52 weeks= $65,577/week
Weeks of supply = Average aggregate inventory valueWeekly sales (at cost)
= = 5.5 weeks$360,500$65,577
c. Inventory turnover =Annual sales (at cost)
Average aggregate inventory value
= = 9.5 turns$3,410,000$360,500
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