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Chapter 11

Chapter 11. Supply Chain Management And E-Business. Overview. Introduction Supply Chain Management Purchasing Logistics Warehousing Expediting Benchmarking the Performance of Materials Managers Third-Party Logistics Management Providers E-Business and Supply Chain Management

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Chapter 11

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  1. Chapter 11 Supply Chain Management And E-Business

  2. Overview • Introduction • Supply Chain Management • Purchasing • Logistics • Warehousing • Expediting • Benchmarking the Performance of Materials Managers • Third-Party Logistics Management Providers • E-Business and Supply Chain Management • Wrap-Up: What World-Class Companies Do

  3. Introduction • Materials • Any commodities used directly or indirectly in producing a product or service. • Raw materials, component parts, assemblies, finished goods, and supplies • Supply chain • Flow of materials through various organizations from the raw material supplier to the finished goods consumer.

  4. Supply Chainfor Steel in an Automobile Door MINING COMPANY Mines iron ore STEEL MILL Forms steel ingot STEEL COMPANY Forms sheet metal Iron ore Steel ingots Sheet metal AUTOMOTIVE SUPPLIER Makes door AUTOMOBILE MANUFACTURER Makes automobile CAR DEALERSHIP Does preparation Car door Car Prepared car FINAL CONSUMER Drives automobile

  5. Supply Chain Management • Definition • All management functions related to the flow of materials from the company’s direct suppliers to its direct customers. • Functions • Include purchasing, traffic, production control, inventory control, warehousing, and shipping. • Two alternative names: • Materials management • Logistics management

  6. Supply Chain Managementin a Manufacturing Plant Receiving and Inspection Raw Materials, Parts, and In-process Ware- Housing Production Finished Goods Ware- housing Inspection, Packaging, And Shipping Customers Suppliers Materials Management Warehousing and Inventory Control Shipping and Traffic Purchasing Production Control Physical materials flow Information flow

  7. Purchasing Factors increasing the importance of purchasing today: • Tremendous impact of material costs on profit • Up to 60-70% of each sales dollar is paid to material suppliers • Popularity of just-in-time manufacturing • Supply deliveries must be exact in timing, quantity, and quality • Increasing global competition • Growing competition for scarce resources, and a geographically “stretched-out” supply chain

  8. Mission of Purchasing • Develop purchasing plans for each major product or service that are consistent with operations strategies: • Low production costs • Fast and on-time deliveries • High quality products and services • Flexibility

  9. Purchasing Management • Maintain data base of available, qualified suppliers • Select suppliers to supply each material • Negotiate contracts with suppliers • Act as interface between company and suppliers • Provide training to suppliers on latest technologies

  10. Advantages of Centralized Purchasing • Buying in large quantities • better prices • More clout with suppliers • greater supply continuity • Larger purchasing department • buyer specialization • Combining small orders • less order cost duplication • Combining shipments • lower transportation costs • Better overall control

  11. Purchasing Process From any department, to purchasing Material Requisition From purchasing, to potential suppliers Request for Quotations Based on quality, price, lead time, dependability Select Best Supplier From purchasing, to selected supplier Purchase Order From supplier, to receiving, quality control, warehouse Receive and Inspect Goods

  12. Buyers’ Duties • Know the market for their commodities • Understand the laws.... tax, contract, patent..… • Process purchase requisitions and quotation requests • Make supplier selections • Negotiate prices and conditions of sale • Place and follow-up on purchase orders • Maintain ethical behavior

  13. Make-or-Buy Analysis Considerations in make-or-buy decisions: • Lower cost - purchasing or production? • Better quality - supplier or in-house? • More-reliable deliveries - supplier or in-house? • What degree of vertical integration is desirable? • Should distinctive competencies be outsourced?

  14. Example: Make-or-Buy A firm manufactures a product that contains a part requiring heat treatment. An analyst is trying to decide whether it is more economical to buy the heat treating service or perform the treatment in house. Pertinent data is shown on the next slide. If part quality and delivery performance are about the same for the two alternatives, which alternative should be selected?

  15. Example: Make-or-Buy Purchase Heat-Treat Heat-Treat In-HouseService Number of parts annually 5,000 5,000 Fixed cost per year $25,000 $0 Variable cost per part $13.20 $17.50

  16. Example: Make-or-Buy • Compute the total cost for each alternative TC = FC + vQ TC1 = FC1 + v1Q = 25,000 + 13.20(5,000) = $91,000 TC2 = FC2 + v2Q = 0 + 17.50(5,000) = $87,500 The firm should buy the heat-treating service (the second alternative). continued

  17. Example: Make-or-Buy The analyst has assumed that 5,000 parts per year will require heat treatment. By how many parts can the firm’s requirements increase or decrease before in-house heat treating is more economical? Should the analyst rethink his/her decision?

  18. Example: Make-or-Buy • Compute the break-even parts quantity FC1 + v1Q = FC2 + v2Q Q = (FC1 - FC2)/(v2- v1) Q = (25,000 – 0)/(17.50 – 13.20) Q = 5,814 If the firm’s annual parts requirement increases by 814 (about 16%) or more, in-house heat treatment would be more economical. The analyst should give the decision more thought.

  19. Logistics • Logistics usually refers to management of: • the movement of materials within the factory • the shipment of incoming materials from suppliers • the shipment of outgoing products to customers

  20. Movement of Materials within Factories The typical locations from/to which material is moved: Incoming Vehicles Receiving Dock Quality Control Warehouse Work Center Other Work Centers Packaging Finished Goods Shipping Shipping Dock Outgoing Vehicles

  21. Shipments To and From Factories • Traffic • Traffic departments routinely examine shipping schedules and select: • shipping methods • time tables • ways of expediting deliveries • Traffic management is a specialized field requiring technical training in Department of Transportation (DOT) and Interstate Commerce Commission (ICC) regulations and rates.

  22. Shipments To and From Factories • Distribution • Distribution, or physical distribution, is the shipment of finished goods through the distribution system to customers. • A distribution system is the network of shipping and receiving points starting with the factory and ending with the customers.

  23. Shipments To and From Factories • Distribution Requirements Planning • DRP is the planning for the replenishment of regional warehouse inventories. • DRP uses MRP-type logic to translate regional warehouse requirements into central distribution-center requirements, which are then translated into gross requirements in the MPS at the factory.

  24. Shipments To and From Factories • Distribution Requirements Planning • Scheduled receipts are previously-placed orders that are expected to arrive in a given week • Planned receipt of shipments are orders planned, but not yet placed, for the future • Projected ending inventory is computed as: • Previous week’s projected ending inventory • + Planned receipt of shipments in current week • + Scheduled receipt of shipments in current week • -- Forecasted demand in current week

  25. Shipments To and From Factories • DRP Time-Phased Order Point Record Region. Warehouse #1 LT = 1 Std. Quantity = 50 SS = 10 Week -1 1 2 3 4 5 Forecasted demand (units) 30 40 30 40 40 Scheduled receipts 50 Projected ending inventory 60 80 40 10 20 30 Planned receipt of shipments 50 50 Planned orders for shipments 50 50

  26. Example: DRP Products are shipped from a company’s main distribution center (adjacent to the factory) to two regional warehouses. The DRP records on the next two slides show – for the two regional warehouse – the forecasted demand, scheduled receipts, and last week’s projected ending inventories for a single product. The third upcoming slide shows – for the main distribution center – scheduled receipts and last week’s projected ending inventory for the same product. Complete the DRP records.

  27. Region. Warehouse #1 LT = 1 Std. Quantity = 100 SS = 50 Week -1 1 2 3 4 5 Forecasted demand (units) 80 100 80 60 100 Scheduled receipts 100 Projected ending inventory 200 Planned receipt of shipments Planned orders for shipments Example: DRP • DRP Record for Regional Warehouse #1

  28. Region. Warehouse #2 LT = 2 Std. Quantity = 200 SS = 80 Week -1 1 2 3 4 5 Forecasted demand (units) 100 200 200 240 200 Scheduled receipts 200 Projected ending inventory 220 Planned receipt of shipments Planned orders for shipments Example: DRP • DRP Record for Regional Warehouse #2

  29. Main Distrib. Center LT = 1 Std. Quantity = 500 SS = 200 Week -1 1 2 3 4 5 Gross Requirements (units) Scheduled receipts 500 Projected ending inventory 250 Planned receipt of shipments Planned orders for shipments Example: DRP • DRP Record for Main Distribution Center

  30. Example: DRP • Completed DRP Record for Regional Warehouse #1 Region. Warehouse #1 LT = 1 Std. Quantity = 100 SS = 50 Week -1 1 2 3 4 5 Forecasted demand (units) 80 100 80 60 100 Scheduled receipts 100 Projected ending inventory 200 220 120 140 80 80 Planned receipt of shipments 100 100 Planned orders for shipments 100 100

  31. Example: DRP • Completed DRP Record for Regional Warehouse #2 Region. Warehouse #2 LT = 2 Std. Quantity = 200 SS = 80 Week -1 1 2 3 4 5 Forecasted demand (units) 100 200 200 240 200 Scheduled receipts 200 Projected ending inventory 220 320 120 120 80 80 Planned receipt of shipments 200 200 200 Planned orders for shipments 200 200 200

  32. Example: DRP • DRP Record for Main Distribution Center • The “gross requirement” ( in row 1) for any week is determined by summing the “planned orders for shipment” for the same week at the two regional warehouses • These gross requirements at the MDC are input to the master production schedule in the factory • In other words, the timing and quantities of production in the factory are linked to the timing and quantities of demand at the regional warehouses

  33. Example: DRP • Completed DRP Record for Main Distribution Center Main Distrib. Center LT = 1 Std. Quantity = 500 SS = 200 Week -1 1 2 3 4 5 Forecasted demand (units) 200 300 200 100 Scheduled receipts 500 Projected ending inventory 250 550 250 550 450 450 Planned receipt of shipments 500 Planned orders for shipments 500

  34. Shipments To and From Factories • Distribution Resource Planning • Distribution resource planning extends DRP so that the key resources of warehouse space, workers, cash, and vehicles are provided in the correct quantities at the correct times.

  35. Analyzing Shipping Decisions • The “Transportation Problem” • Problem involves shipping a product from several sources (ex. factories) with limited supply to several destinations (ex. warehouses) with demand to be satisfied • Per-unit cost of shipping from each source to each destination is specified • Optimal solution minimizes total shipping cost and specifies the quantity of product to be shipped from each source to each destination

  36. Example: Minimizing Shipping Costs Pacer produces computer monitors in its three factories and ships them to five regional warehouses. The factory-to-warehouse shipping costs per monitor are: Warehouse FactoryABCDE 1 $2.10 $4.30 $3.60 $1.80 $2.70 2 4.90 2.60 3.50 4.50 3.70 3 3.90 3.60 1.50 5.80 3.30 continued

  37. Example: Minimizing Shipping Costs The factories have the following capacities (monitors produced per month): 1 = 10,000; 2 = 20,000; and 3 = 10,000. The warehouses need at least these numbers of monitors per month: A = 5,000; B = 10,000; C = 10,000; D = 5,000; and E = 10,000. Use the POM Software Library to solve this transportation problem.

  38. Example: Minimizing Shipping Costs • Solution Warehouse FactoryABCDE 1 5,000 0 0 5,000 0 2 0 10,000 0 0 10,000 3 0 0 10,000 0 0 Total monthly shipping cost = $97,500 (Note: all warehouse demand is satisfied and no factory’s capacity is exceeded.)

  39. Innovations in Logistics • New developments affecting logistics include: • All-freight airports • Inter-modal shipping • In-transit rates • Consolidated shipments • Air-freight and trucking deregulation • Advanced logistics software

  40. Warehousing • Definition • Warehousing is the management of materials while they are in storage. • Warehousing activities: • Accounting • Ordering • Storing • Dispersing

  41. Warehousing • Record keeping within warehousing requires a stock record for each item that is carried in inventories. • The individual item is called a stock-keeping unit (SKU). • Stock records are running accounts that show: • On-hand balance • Receipts and expected receipts • Disbursements, promises, and allocations

  42. Inventory Accounting • In the past, inventory accounting was based on: • periodic inventory accounting systems • periodic (end-of-day) updating of inventory records • physical inventory counts • periodic (end-of-year) physical counting of all SKUs at one time • Today, more and more firms are using: • perpetual inventory accounting systems • real-time updating of records as transactions occur • cycle counting • ongoing (daily or weekly) physical counting of different SKUs

  43. Example: Cycle Counting A company is implementing a cycle-counting program. Class A items will be counted monthly, Class B items will be counted quarterly, and Class C items will be counted semi-annually. 5% of the firm’s inventory items are classified as Class A, 20% are Class B, and 75% are Class C. If the firm has 16,000 different SKUs (unique inventory items), how many will need to be counted daily? Assume 200 days per year are available for cycle counting.

  44. Example: Cycle Counting Number Number of Counts Class of Items per Item Total Counts of Item per Class per Year per Year A 800 12 9,600 B 3,200 4 12,800 C 12,000 2 24,000 Total 16,000 46,400

  45. Example: Cycle Counting • Number of Inventory Items Counted Daily = 46,400/200 = 232 items per day

  46. Example: Cycle Counting The cycle-counting personnel must count 232 inventory items per day. If the average cycle-counter can count 24 items per day, how many counters are needed? • Number of Cycle-Counting Personnel Required = 232/24 = 9.67 or 10 counters

  47. Measuring the Performance Materials Managers • Level and value of in-house inventories • Percentage of orders delivered on time • Number of stockouts • Annual cost of materials • Annual cost of transportation • Annual cost of warehouse • Number of customer complaints • Other factors

  48. Wrap-Up: World-Class Practice • See materials management as key element in capturing global market share • Form partnerships with suppliers • Use computers extensively to manage logistics

  49. End of Chapter 11

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