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Supply Chain Mgmt Jit

Supply Chain Mgmt Jit






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    Supply Chain Mgmt Jit Supply Chain Mgmt Jit Presentation Transcript

    • Just-In-Time (JIT)
      • JIT : an integrated set of activities designed to
      • achieve high-volume production using minimal
      • inventories of raw materials, finished goods &
      • work in process.
    • Just-In-Time (JIT) (Cont.)
      • Management philosophy…Nothing produce until needed.
      • Encompasses the successful execution of all production activities required from design to delivery of products.
      • Common sense based/simple techniques
    • Just-In-Time (JIT) (Cont.)
      • Minimize waste of time, energy, material & errors
      • Minimize waste…in both factories: Manufacturing product & “Hidden”
      • Attack/eliminate waste
      • Value added to the final product philosophy … from customer ’s point of view
    • Just-In-Time (JIT) (Cont.)
      • Expose problems
      • Continuous improvement/ change
      • Enforced problem solving approach
    • Goals
      • Zero defects …reducing defects
      • Zero inventory …Stockless production
      • Zero setup time … SMED ---Single Minute Exchange of Dies
      • Zero handling
      • Zero break down
    • Goals (Cont.)
      • Zero lead time
      • Zero Transactions …reduced paperwork
      • Zero disturbances …routine execution of schedules
    • Elements addressing Elimination of Waste
      • Focused Factory …specialized
      • Group Technology …Eliminate movement & queue time between operations
      • Jidoka …Quality at the source stop line if necessary
        • Total quality: an approach that encompasses all phases of a manufacturing organization.
    • Elements addressing Elimination of Waste (Cont.)
      • Quality …Meeting a specific set of customer
      • expectations
      • Fitness for use, reliability, consistency, etc.
      • Customer…external & internal
    • JIT Manufacturing
      • JIT Manufacturing :
      • Executing linear production : Production of necessary units in the necessary time with the objective of  0 Variance W.R.T. the schedule.
    • JIT Manufacturing (Cont.)
        • No Inventories, No queues
        • Minimum schedule variation
        • Uniform plant loading
        • Uninterrupted flow of materials
        • Flow paced by market demands
        • Flexibility, Visual Control (make problems visible to everyone), Reliability (of materials, people & equipment)
    • JIT Manufacturing (Cont.)
        • Inventory hides problems such as poor quality, break downs, late deliveries, workers absence & tardiness, etc.
      • Tightening the production system :
        • Reducing the amount of inventory in the system
        • “One less at a time”…(reducing the lot size)
          • expose eliminate constraints
    • Pull System
      • Produce only when material is needed downstream…(cue from the user not the planning source)
      • Pull materials sequentially through the factory.
      • Orders placed at end item level.
      • Idle material is waste.
      • Need discipline…(Good practices reinforced through training)
    • Push System
      • Production authorized in anticipation of needs downstream…(cue is a work order from the planning system)
      • Orders launched to meet due dates.
      • Keep machines & people busy.
      • NOTE : Planning is necessary under JIT to ensure the right amount of productive resources are
      • scheduled/available to satisfy MPS/FAS
    • Kanban Production Control Systems
      • Simple, paperless procedures
      • Signals/visual systems
        • Posted schedules
      • Containers
        • Standard size , small
          • Factors: Material Handling consideration proximity of work centers
    • Kanban Production Control Systems (Cont.)
      • Kanban…Cards
          • Production Card---”P” Card:
            • Part #, Quantity to be produced, Supply work center #, etc.
          • Conveyance (Move) Card---”C” Card :
            • Part #, Container Capacity, Source, Destination, etc.
      • 1-card system : Move card and an empty space
      2-card system
    • Setup Reduction
      • Setup reduction is the process of reducing the time required to convert from production of the last good piece of unit A to the first good piece of unit B .
      • use methods engineering/common sense.
      • Ideal lot size = 1.
    • Setup Reduction (Cont.)
      • Setup activities:
        • External: Operations performed while the machine is running.
        • Internal: Operations performed after the machine is stopped.
      • Setup…responsibility of the operator.