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Operations Management




                    Notes                                    Figure 7.4: Product-Process Matrix

                                                                 Product Characteristics

                                       High Volume    High Volume    Moderate Volume   Low Volume    One of a
                                       Commodity      Some Product   Multiple          Many          kind
                                       Products       Variety        Products          Products      Products

                                     Process          Low                                          High

                                     Alternative      Unit Costs                                   Unit Costs

                                    Continuous   Low   Petrochemicals, Reliance

                                    Flow      Product   Industries

                                              Variety
                                    Assembly
                                    Line              Printed Circuit Boards, ECIL


                                    Batch                  Scientific Computers, ECIL.
                                    Flow

                                    FMS                        Assembly of different Automobiles
                                                              On the same assembly line e.g. Maruti
                                    Cell
                                                                   Manufacture of bicycle subassembles,
                                    Job Shop   High
                                              Product
                                    Project   Variety                            TCIL

                                                                             Manufacture of Jigs and
                                                                             Fixtures, TELCO.
                                                                             Construction Contracts, L&T


                                   The production system also has to deal with low volume, multiple standard products or high
                                   volume multiple standard products. Operations Management has to combine these patterns in
                                   different manners. In many production systems, parts manufacture is a process focused system
                                   and assembly is a product focused system.
                                   Figure 7.6 shows these relationships with examples. The vertical axis within the matrix refl ects
                                   the links between process choice and product variety, and the horizontal axis process choice,
                                   represent the subsequent link between process choice and the other product characteristics e.g.,
                                   volume, nature and unit costs. The diagonals help place a firm with the most appropriate match

                                   up of process.

                                   For example, a firm that produces low volumes of unique products is advised to use a job shop
                                   structure, whereas one that produces high volumes of commodity products should best use a

                                   continuous flow process. The industries listed within the matrix are presented as representative
                                   types in their structural niche, though it is possible for them to choose another position on the
                                   matrix.
                                   If an organization decides to use a job shop process for a high-volume standard product, the
                                   firm would normally lose significant opportunities to increase market share or make more profi t.




                                   Lacking process efficiency, such a firm may become incapable of competing with fi rms that have
                                   more efficient processes. Similarly, if a firm sets up a line process for low-volume customized


                                   products, it would incur significantly higher investments in processes, equipment, and methods

                                   than necessary.
                                   Based on the product-process matrix there are two ends of a continuum of production systems,
                                   which are: (a) process focused systems, and (b) product focused systems.


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