14-2   JIT and Lean Operations
CHAPTER
      14
                                               JIT and
                              Lean Operations
                                                                Operations Management, Eighth Edition, by William J. Stevenson
  McGraw-Hill/Irwin                                             Copyright © 2005 by The McGraw-Hill Companies, Inc.  All rights 
                                                                                                             reserved.
     14-3   JIT and Lean Operations
                               JIT/Lean Production
                               JIT/Lean Production
            Just-in-time (JIT): A highly coordinated 
              processing system in which goods move 
              through the system, and services are 
              performed, just as they are needed,
            JIT   lean production
            JIT  pull (demand) system
            JIT operates with very little “fat”
     14-4   JIT and Lean Operations
                                            Goal of JIT
                                            Goal of JIT
             The ultimate goal of JIT is a balanced 
             system.
             Achieves a smooth, rapid flow of materials 
             through the system
             Summary JIT Goals and Building 
             Summary JIT Goals and Building 
     14-5   JIT and Lean Operations
                                                  Blocks
                                                  Blocks
   Figure 14.1
                                    Ultimate          A
                                      Goal       balanced
                                                rapid flow
        Supporting
            Goals          Eliminate disruptions
                       Make the system flexible                Eliminate waste
               Product               Process            Personnel           Manufactur-            Building
               Design                Design             Elements            ing Planning            Blocks
     14-6   JIT and Lean Operations
                                  Sources of Waste
                                  Sources of Waste
             Overproduction
             Waiting time
             Unnecessary transportation
             Processing waste
             Inefficient work methods
             Product defects