Just in time


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Just in Time, what it means? how it developed? steps in implementing it, waste according to it.

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Just in time

  1. 1. Manoj Lawate
  2. 2. Introduction• “a philosophy of manufacturing based on planned elimination of all waste & on continuous improvement of productivity”• a production strategy that strives to improve a business return on investment by reducing1. in-process inventory2. associated carrying costs
  3. 3. Just In Time!!! Air Traffic Control
  4. 4. Founder of JIT• Founded by Taiichi Ohno• A vice president of Toyota• Basically implemented in Toyota plant 1950, well established after 1970• Well known as Toyota Production System
  5. 5. Followers of JIT• Adopted by General Electrical in the USA in the 1980• Some companies referred JIT with different names; – TOYOTA = ‘Toyota System’ – IBM = ‘continuous flow manufacturing’ – HEWLETT-PACKARD = ‘stockless production & repetitive manufacturing system’ – GE = ‘management by sight’
  6. 6. Some Statistics … Comparison GM TOYOTA Assembly Hours 40.7 Hours 16 HoursDefects per 100 Hours 130 Defects 45 DefectsAverage inventory level 2 Weeks 2 Hours
  7. 7. JIT Goals…• Eliminate disruptions• Make the system flexible• Reduce set up times & lead time• Minimize inventory• Eliminate waste• Increase productivity• Give the customer the products they want, when and where they want them at the minimum cost
  8. 8. Steps in JIT• Introduce the speed design of process, target, use of recourses – 1000 cars in a month, 500 workers – 1000 cars in a week, 1500 workers• Eliminate or Reduce Stock zero inventory level is ideal• Examples of KANBAN involves a customer & a supplier aim = to satisfy the customer’s needs
  9. 9. Steps in JIT• Design of Plant arranging machinery, people & activities• Reducing & Avoiding set ups & Preventive Maintenance so that activity should not stopped• Simplifying the planning so that replacement can be possible
  10. 10. Tools of JIT• The 7 wastes• The 5 Ss• Kanban Inventory• Visual Control• Pokayoke• Kaizen• Cellular Work Flow• Standard Work Concept• Make it Ugly• Just Do It
  11. 11. The 7 Wastes
  12. 12. Waste according to JIT
  13. 13. Concluding JIT• Advantage of JIT - reduces cost of production• Disadvantage of JIT - it takes time to establish
  14. 14. Thank You!
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